Ashly mXa-1502 Operating Manual
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mXa-1502 • Operating Manual
2
mXa-1502 • Operating Manual
Important Safety Instructions • Consignes de sécurité à lire attentivement
The lightning flash with arrowhead symbol, within
an equilateral triangle, is intended to alert the
user to the presence of uninsulated “dangerous
voltage” within the product’s enclosure that may
be of sufficient magnitude to constitute a risk of
electric shock to persons. The exclamation point
within an equilateral triangle is intended to alert
the user to the presence of important operating
and maintenance instructions in the literature
accompanying the device.
Le symbole de la flèche dans un triangle équilateral
symbolisant la foudre est prévu pour sensibiliser
l’utilisateur à la présence de tension de voltage
non isolée à l’intérieur de l’appareil. Elle pourrait
constituer un danger de risque de décharge élec-
trique pour les utilisateurs. Le point d’excl mation
dans le triangle équilatérale alerte l’utilisateur de la
présence de consignes qu’il doit d’abord consulter
avant d’utiliser l’appareil.
1.
Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. To reduce the risk of fire or
electric shock, do not expose
this apparatus to rain or
moisture.
6. Do not use this apparatus near
water.
7.
Clean only with dry cloth.
8. Do not block any ventilation
openings. Install in accordance
with the manufacturer’s
instructions.
9. Do not install near any heat
sources such as radiators,
heat registers, stoves, or other
apparatus.
10. Do not defeat the safety
purpose of the polarized or
groundingtype plug. A polarized
plug has two blades with
one wider than the other. A
grounding type plug has two
blades and a third grounding
prong. The wide blade or the
third prong are provided for your
safety. If the provided plug does
not fit into your outlet, consult
an electrician for replacement
of the obsolete outlet.
11. Protect the power cord
from being walked on or
pinched particularly at plugs,
convenience receptacles, and
the point where they exit from
the apparatus.
12. Only use attachments/
accessories specified by the
manufacturer.
13. Use only with the cart, stand,
tripod, bracket, or table
specified by the manufacturer,
or sold with the apparatus.
When a cart is used, use
caution when moving the cart/
apparatus combination to avoid
injury from tip-over.
14. Unplug this apparatus during
lightning storms or when
unused for long periods of time.
15. Refer all servicing to qualified
service personnel. Servicing is
required when the apparatus
has been damaged in any way,
such as power-supply cord or
plug is damaged, liquid has
been spilled or objects have
fallen into the apparatus, the
apparatus has been exposed
to rain or moisture, does not
operate normally, or has been
dropped.
1.
Lisez ces instructions.
2. Conservez ces instructions.
3. Observez les avertissements.
4. Suivez ces instructions.
5. Pour réduire le risque de feu
ou la décharge électrique, ne
pas exposer cet appareil pour
pleuvoir ou l’humidité.
6. Ne pas utiliser l’appareil près de
l’eau.
7.
Le nettoyer à l’aide d’un tissus
sec.
8. Ne pas bloquer les ouvertures
de ventilation, installer selon les
consignes du fabricant.
9. Eloigner des sources de chaleur
tel: radiateurs, fourneaux ou
autres appareils qui produisent
de la chaleur.
10. Ne pas modifier ou amputer
le système de la mise à terre.
Une prise avec mise à terre
comprend deux lames dont
une plus large ainsi qu’une mise
à terre: ne pas la couper ou
la modifier. Si la prise murale
n’accepte pas la fiche, consulter
un électricien pour qu’il
remplace la prise désuète.
11. Protéger le cordon de secteur
contre tous bris ou pincement
qui pourraient l’endommager,
soit à la fiche murale ou à
l’appareil.
12. N’employer que les accessoires
recommandés par le fabricant.
13. N’utiliser qu’avec les systèmes
de fixation,chariots, trépied
ou autres, approuvés par le
fabricant ou vendus avec
l’appareil.
14. Débrancher l’appareil lors des
orages électriques ou si inutilisé
pendant une longue période de
temps.
15. Un entretient effectué par un
centre de service accrédité
est exigé si l’appareil a été
endommagé de quelque façon:
si il a été exposé à la pluie,,
l’humidité ou s’il ne fonctionne
pas normalement ou qu’il a été
échappé.
WARNING: THIS APPARATUS MUST BE GROUNDED (EARTHED)
mXa-1502 • Operating Manual
FCC Compliance
This device complies with part 15 of the FCC
Rules. Operation is subject to the following two
conditions:
■ This device may not cause harmful
interference
■ This device must accept any
interference received, including
interference that may cause undesired
operation
Note: This equipment has been tested
and found to comply with the limits for a
Class B digital device, pursuant to part 15
of the FCC Rules. These limits are designed
to provide reasonable protection against
harmful interference in both a commercial
and residential installation. This equipment
generates, uses and can radiate radio
frequency energy and, if not installed and
used in accordance with the instructions,
may cause harmful interference to radio
communications. However, there is no
guarantee that interference will not occur
in a particular installation. If this equipment
does cause harmful interference to radio or
television reception, which can be determined
by turning the equipment off and on, the user
is encouraged to try to correct the interference
by one or more of the following measures:
■ Reorient or relocate the receiving
antenna.
■ Increase the separation between the
equipment and receiver.
■ Connect the equipment into an outlet on
a circuit different from that to which the
receiver is connected.
■ Consult the dealer or an experienced
radio/TV technician for help.
Unpacking
As a part of our system of quality control,
every Ashly product is carefully inspected
before leaving the factory to ensure flawless
appearance.
After unpacking, please inspect for any
physical damage. Save the shipping carton
and all packing materials, as they were
carefully designed to reduce to a minimum the
possibility of transportation damage should the
unit again require packing and shipping. In the
event that damage has occurred, immediately
notify your dealer so that a written claim to
cover the damages can be initiated.
The right to any claim against a public
carrier can be forfeited if the carrier is not
notified promptly and if the shipping carton
and packing materials are not available for
inspection by the carrier. Save all packing
materials until the claim has been settled.
About Ashly
Ashly Audio was founded in 1974 by a
group of recording engineers, concert sound
professionals, and electronics designers. The
first products were elaborate custom consoles
for friends and associates, but business quickly
spread to new clients and the business grew.
The philosophy we established from the
very beginning holds true today: to offer only
the highest quality audio tools at an affordable
cost to the professional user − ensuring
reliability and long life. Years later, Ashly
remains committed to these principles.
Ashly’s exclusive five-year, worry-free
warranty remains one of the most generous
policies available on any commercial- grade
product. The warranty covers every product
with the Ashly brand name, and is offered at no
extra cost to you.
Please read this entire manual to fully
understand the features and capabilities of this
product.
mXa-1502 • Operating Manual
4
mXa-1502 • Operating Manual
Table of Contents
1
Introduction ................. 6
1.1 Product overview ..............6
1.2 Product features ...............6
2
Installation Requirements . 7
2.1 Electrical and wiring ........ 7
2.2 Mechanical ..................... 7
2.3 Cooling ........................... 7
2.4 Network .......................... 7
2.5 Browser & resolution .........7
3
Front Panel Features .......
3.1 Mounting holes . .................
3.2 Cooling vents . ....................
3.3 Device reset switch . ...........
3.4 Channel LEDs . ....................
3.5 Select buttons . ...................
3.6 Status LEDs . .......................
3.7 Power switch . .....................
3.8 Bridge LED . ........................
4
Rear Panel Features ........
4.1 Mic/line inputs ....................
4.2 Stereo line inputs ...............
4.3 Aux out 1 & 2 ......................
4.4 VCA 1-3 input ....................
4.5 Data connection ................
4.6 Trigger 1-8 input ................
4.7 GPO logic outputs 1 & 2 .......
4.8 Amp 1 & 2 fault output .......
4.9 Standby .............................
4.10 Ethernet port ......................
4.11 Output mode ......................
4.12 Speaker outputs .................
4.13 AC inlet ..............................
4.14 Model information ..............
5
Network Discovery .........
5.1 Windows 10 .......................
5.2 OSX ....................................
5.3 iOS .....................................
5.4 Android ..............................
6
AquaControl Software .....
6.1 Dashboard screen ..............
a. Launch remote mixer ......
b. Launch remote DCA ........
c. Launch quick setup .........
6.2 Signal chain screen ............
a. Mic inputs 1-8 .................
b. Stereo inputs 9-12 ..........
c. Mixers 1-4 .......................
d. Speaker & Aux 1-2 ..........
e. Presets ............................
f. Input DSP .........................
g. Output DSP .....................
DSP blocks ......................
Audio meter ..................
Autoleveler ...................
Brick wall limiter ............
Compressor ..................
DCA gain .......................
Delay ............................
Feedback suppressor ...
Gain ..............................
Gate ..............................
Graphic equalizer ..........
High-pass filter .............
Low-pass filter ..............
Parametric equalizer .....
Signal generator ...........
VCA gain .......................
Ambient noise comp. ....
Crossover .....................
FIR filter ........................
h. Mixers/Automixer ...........
i. Ducking ............................
j. Routing ............................
6.3 Settings screen ...................
a. General settings ..............
Firmware update ...........
Real time clock..............
b. Panels > Front panels ......
Disable power switch ....
Disable LEDs .................
Sleep mode setup .........
Remote power on/off ....
Software standby .........
c. Panels > Front buttons .....
Source select ................
Preset recall ..................
Sub-preset recall ..........
d. Panels > Rear panels .......
Mic input LEDs ..............
Mic phantom pwr ..........
Mic gain ........................
VCA input status ...........
Trigger input status .......
Output mode status ......
Bridge mode enable ......
Standby pin polarity ......
GPO pin toggle ..............
e. Network ..........................
MAC address ................
DHCP config .................
Static IP config ..............
f. Security ...........................
Admin ...........................
Guest admin .................
Operator .......................
View only ......................
6.4 Events screen .....................
a. Event list..........................
b. Scheduled events ...........
c. Triggered events .............
6.5 Diagnostics screen .............
7
Remote Control ..............
7.1 VCA level control ................
7.2 Trigger logic inputs ............
7.3 GPO logic outputs ..............
7.4 Amp fault logic outputs ......
7.5 Remote standby .................
7.6 Ashly remotes ....................
a. WR-1.0 and WR-1.1 ........
b. WR-1.5 ............................
c. WR-2 ...............................
8
Amplifier Protection ........
9
Troubleshooting .............
10 Specifications ...............
Power amplifier ...................
AquaControl™ software ......
11 Block Diagrams ..............
12 Limited Warranty ............
Thank you for your purchase of the mXa-1502
Mixer Amplifier. This product combines a state
of the art Class D two channel multi-mode
amplifier with eight mic inputs and 4 stereo line
inputs for a total of 16 analog inputs.
The mXa-1502 also comes standard with
comprehensive DSP processing including
ducking, matrix mixing, tone generation,
integrated Ethernet control using Ashly
AquaControl™ software, remote control,
triggered/scheduled events, auxiliary outputs,
and more. Please read this entire manual to
fully understand the features and capabilities
of this product.
1.1 Product Overview
The mXa-1502 is a two-channel x 150W amplifier
with selectable output modes for low impedance
(2/4/8 Ohm), 25V,70V or 100V and two AUX
Outputs, plus 8 mic/line inputs and 4 stereo line
inputs. Other features include comprehensive
DSP, matrix routing and mixing, ducking,
automixing, automatic feedback control, event
scheduling/triggering, and remote control. There
are four independent mixers for matrix mixing,
plus event based logic outputs and fault logic
outputs.
The mXa-1502 is configured and controlled
using server-based Ashly AquaControl™
software, compatible with most browser
enabled devices. Since AquaControl is pre-
installed and served from every mXa-1502, it is
unnecessary to install the application onto your
computer, phone, or tablet.
1.2 Product Features
• Two 150W amplifiers, configurable for low-
impedance, 25V, 70V, or 100V output
• Eight balanced Mic/Line inputs, +48V
phantom power, four stereo -10dBV line
level inputs using RCA jacks
• Four independent mixers, two Aux outputs
• Ashly AquaControl server-based software,
runs on most web-browsers, no app to install
• Password protected security roles for admin,
guest admin, operator, view only
• Presets, sub-presets
• DSP ducking, automixer, autoleveler, FIR
filter, comp/limiter, EQ, crossover, more
• Real-Time-Clock for programming
scheduled events or event sequences
• Eight programmable triggered event logic
inputs, two event driven logic outputs, two
amplifier fault logic outputs
• Remote DC level control VCA inputs
• Automatic sleep mode, less than 1W,
defeatable, plus remote contact closure or
event driven power standby
• Front panel LEDs for temp, current, signal,
clip, mute, bridge mode, protect, sleep,
com, and power switch disable
• Universal switch mode power supply with
active power factor correction (PFC)
• Protection: Shorted output, over-
temperature, power supply fault, output DC,
mains fuse, in-rush current limiting
• Certifications: cTUVus, FCC, CE, RoHS
• Ashly Five year warranty
2 Installation Requirements
2.1 Electrical and Wiring
The mXa-1502 is designed with a universal
power supply, compatible with 100-240VAC,
50-60Hz. Always use the power cord supplied
with your unit. Do not remove AC ground.
Always use high quality shielded cable for
input signals, and use a balanced input signal
when possible. To avoid possible system noise
or oscillation, avoid running low level signal
wires parallel to speaker outputs or AC wiring,
especially over long distance. Before testing
the system, double check all connections and
settings. Refer to the specifications section
of this manual for input, output, Ethernet, and
other amplifier properties to consider during
installation.
2.2 Mechanical
The mXa-1502 is 1RU, and is designed to fit in
a standard 19-inch equipment rack. Use four
screws when mounting the amplifier to the
front rack rails. Rear support is recommended
for mobile or touring use (see mechanical
drawing). In some installations where the sound
system is exposed to a high level of RF noise or
system-induced oscillation, it may be necessary
to ground the amplifier’s chassis to the rack
enclosure. This is accomplished using star type
lockwashers on the four rack mounting screws,
placed between the amplifier chassis and the
rack rails. These star washers will penetrate
through the amplifier and rack rail finish to
adequately ground the chassis to the rack.
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mXa-1502 • Operating Manual
Air vents on the amplifier front and side
panels must have access to free flowing room
temperature air. Cool air is drawn in through
the side and blown out the front. It is not
necessary to leave empty rack spaces above
or below the amplifier. See the BTU/hr table in
the specifications section for thermal output
characteristics.
2.4 Network
A standard 100MHz or faster network is required.
Connect the mXa-1502 Ethernet jack to a net-
work switch or router, or directly to a computer.
Once a successful Ethernet connection has
been made, a solid green LED (Link) lights up on
the RJ-45 Ethernet port. If there is no green LED
showing, there is either a problem with the cable
or network connection which must be addressed
before proceeding further. All RJ-45 Ethernet
ports flash green when active, so backtrack
through any other cables, routers, or switches
to find the problem. The flashing yellow LED
(Data) indicates that data is flowing to or from the
device. See section 5 for detailed instructions on
mXa-1502 network discovery.
2.5 Browser and Resolution
Supported browsers include Chrome, Edge
(Win10 recommended), and Safari. The
software requires a minimum screen resolution
of 1024 x 768. For use with a tablet, a minimum
screen size of 10" is recommended.
3 Front Panel Features
3.1 Mounting Holes
For rack mounting. Always use all four screws.
3.2 Cooling Vents
Cool air enters the sides and is vented out
through the front.
3.3 Device Reset Switch
There are two levels of device reset, Admin reset
or Factory Default reset, determined by how long
you press and hold in this recessed switch during
a cold-boot power-up.
A cold-boot power-up means that AC power is
removed before initiating reset.
To initiate reset, first press and hold in the reset
switch using a pencil-tip or paperclip, then
insert the power cord or turn on the power
outlet the device is plugged into. During the
reset process, all channel LEDs will light up from
bottom to top, followed by the four status LEDs.
To cancel reset before it completes, release the
reset switch before the green Signal LEDs turn on.
1) Admin reset changes the Admin User ID
password back to , but preserves
all other user IDs/passwords, presets, and
settings. Use this level if you forgot the admin
password.
To perform an Admin reset, release the reset
switch after the green signal LEDs turn on,
but before the red Clip/Mute LEDs turn on.
2) Factory Default reset deletes all User
IDs and passwords, deletes all presets, and
restores all settings to factory default. Use this
level to completely scrub the device clean of
any previous programming.
To perform a Factory Default reset, release
the reset switch after the red Clip/Mute LEDs
turn on.
3.4 Channel LEDs
The red Clip/Mute LEDs flash when output
voltage is 0.5V below the output power supply
voltage, or when an input signal or DSP section
is clipped. This LED also lights when the output
channel is muted.
The green signal LEDs light when the output
voltage reaches -18dBu below rated output.
The green current LEDs confirm that amplifier
output is being delivered to a speaker load.
The yellow temp LEDs indicate that the
amplifier channel has reached an excessively
high operating temperature and will gradually
attenuate the signal to compensate. If unable
to sufficiently cool the channel, the amplifier
will put itself into protect mode.
3.5 Select Buttons
The four select buttons are initially
unassigned. They can be programmed in
software to perform preset/sub-preset
recall or source select. To program select
buttons in AquaControl™ software, go to
[Settings>Panels>Front Button Settings].
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mXa-1502 • Operating Manual
3.6 Status LEDs
Com LED indicates Ethernet activity.
Protect LED indicates the amplifier has
encountered a fault condition and has shut
down its power supply.
Sleep LED turns on when the amplifier is in
sleep mode, as configured in software. To set
sleep mode on/off and set the audio inactivity
time before the amplifier goes to sleep, go to
[Settings>Panels>Front Panel].
The Disable LED is lit when the power switch
has been disabled from software.
3.7 Power Switch
The power switch turns the unit on or off, and
also flashes when in standby. The power switch
can be disabled in software. To disable the
power switch, go to [Settings>Panels>Front
Panel>Enable Front Panel Power Button].
3.8 Bridge LED
This green LED indicates the amplifier has been
set to BRIDGE mode from software. To select
Bridge mode, go to [Settings>Panels>Rear
Panel>Bridge Mode].
4 Rear Panel Features
4.1 Balanced Mic/Line Inputs
This is used for a three wire (G, +, -) balanced
analog input using 3.5mm Euroblock
connectors. If an unbalanced input signal is to
be connected here, wire the hot signal to (+),
the input ground to (G), and connect the (-) pin
to (G). Maximum input level is +21dBu.
4.2 -10dBV Unbalanced Stereo Line
Inputs
These RCA jacks are used for stereo line level
inputs (-10dBv). Note: Unbalanced line level
sources may reference their outputs to a
different ground than this amplifier, creating
the potential for ground loop hum. Always use
short cable lengths for unbalanced signals,
routed away from AC, video, or data cables, and
make every effort to use a common grounding
point for all devices. In the event there is still
ground loop hum, isolate the unbalanced input
signal by using an in-line isolation transformer.
4.3 AUX Out 1 & 2
AUX outputs offer additional and independent
post-DSP signals for driving other amplifiers or
processors. AUX outputs are configured in the
Signal Chain>Routing section. AUX outputs use
balanced signals.
4.4 VCA 1-3
A VCA (voltage controlled amplifier) is used to
remotely control one or more VCA gain blocks
placed in the software signal chain. Ashly WR-
1, WR-1.1, and WR-1.5 remotes can be wired
to VCA 1-3 input pins to control the assigned
VCA gain. See section 7 for example.
4.5 Data
These four pins offer serial data control for
future remote control development.
4.6 Trigger 1-8
Eight contact closure pins can be used
for triggering mXa-1502 events or event
sequences that have been programmed in
software. See section 6.1c, 6.4, and 7.2 for
details and available event action types.
4.7 GPO 1 & 2
These two pins provide logic outputs that are
referenced to the closest ground (G) and +5V
pins on the same connector. Logic outputs are
generated from presets or amplifier events,
and can be assigned high or low in software.
See section 7.3 for example.
4.8 Amp 1 & 2 Fault
Fault output pins are logic-high (+3V) when
the amp channel is on and ok, but transition to
logic-low (0V) when the amp channel is off or in
a protect/fault state. See section 7.4 for details.
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mXa-1502 • Operating Manual
The Standby pin gets wired to a remote switch
in order to a place the amp into standby mode.
The power switch LED will flash when the amp
is in standby. Standby pin contact polarity can
be set in software for standby when closed or
standby when open. See section 7.5 for details.
4.10 Ethernet Port
The RJ-45 connects to a network for Ashly
AquaControl™ software control.
4.11 Output Mode
This DIP switch independently configures
channels 1 & 2 for low impedance, 25V, 70V,
or 100V output. When the amplifier is set to
bridge mode, channel 1 DIP switch settings
determine bridge output mode.
4.12 Speaker Outputs
Use this connector for wiring amplifier
outputs to speakers or constant voltage line
transformers. These are 7.62mmm removable
Euroblock connectors which can accept up to
12 ga. speaker wire.
4.13 AC Inlet
Used for the detachable AC cord. Use only
the factory supplied AC cord. WARNING:
Do not remove or lift the AC mains ground
connection.
4.14 Model Information
A sticker placed on the side of the amp shows
serial number, MAC address, mains voltage,
and mains power/current consumption.
5 Network Discovery
The mXa-1502 has a built-in web server
delivering AquaControl™ software application
to your device. The software may be used on
most computers and mobile devices with a web
browser.
Supported browsers include Chrome, Edge
(Win10 recommended), and Safari.
The software requires a minimum screen
resolution of 1024 x 768.
For use with a tablet, a minimum screen size of
10" is recommended.
The mXa-1502 comes configured with
automatic IP assignment as the default setting.
This means you will initially need to connect the
mXa's Ethernet jack to a router or other device
capable of automatic (DHCP) IP assignment.
Through a router: Connect your computer
or mobile device to the same router/LAN that
the mXa is connected to, using WiFi or a wired
network cable. Apply power to each device,
and wait for them to boot up and receive IP
assignments from the router. It may take up
to a minute for the DHCP server to assign IP
addresses to each device.
Directly to a computer: The mXa-1502 also
supports Link Local for connecting directly to
a computer. When the Network setting is set
to Automatic (DHCP) and no DHCP server is
available, the unit will default to a Link Local IP
address of 169.254.100.100. Connect the mXa-
1502 directly to your computer's Ethernet jack
and wait about a minute, then type the Link Local
IP address shown above into your computer's
browser URL to gain access.
DHCP vs Static IP: If a computer, tablet, or
mobile device is controlling the mXa-1502
through a network router, the mXa-1502
should be assigned a Static IP address after
its initial discovery. Otherwise a new discovery
process may be required every time you launch
the software, since DHCP routers can arbitrarily
re-assign IP addresses.
- To assign static IP from AquaControl
software, go to [Settings>Network>Network
Configuration] and select [Manual
Configuration]. Save your settings and note the
IP address for future use.
- Static IP must also be provisioned in the
router(s) to guarantee a reserved IP address for
the mXa-1502 and any of its deployed remote
mixer or remote DCA devices.
- Once the mXa-1502 has been assigned a
static IP address, the address can be entered
into any browser.
For initial network discovery, use the
following steps to automatically discover the
mXa-1502: In all cases, the initial default login
credentials will be:
User ID:
admin
Password:
secret
8
mXa-1502 • Operating Manual
5.1 Windows 10:
1) Open Computer or Windows Explorer and
click on the Network folder. The list of Network
devices should start populating. Wait for it to
complete and skip to step 3 (this could take
several minutes).
If the list doesn't populate, you probably need
to enable Windows Network Discovery - go to
step 2.
2) Click on the yellow warning text at the top of
the Network folder to enable Windows Network
Discovery. Repeat Step 1.
3) Find the mXa-1502 device in the SSDP
Plug'N'Play devices section. (If you do not see
an mXa device in the SSDP section go to step 4.
Note: the MAC address is appended to the
device name, and is also printed on the
unit's serial number sticker. Double-click on
the device icon to automatically launch the
software in your default web browser. Skip to
step 7.
4) Find the mXa-1502 device in the NetBIOS
(Samba) computing devices section. Double-
click on it and proceed to step 5.
5) Double-click on the AquaControl shared
folder and proceed to step 6.
6) Double-click on the index.html file and the
web server software will launch in your default
web browser. Proceed to step 7.
7) Log in to AquaControl software. Enter your
username and password, and click or touch the
Log In button. If this is the first log-in to a new
unit, use the factory default credentials.
5.2 OSX
1) From the desktop, click , then click on
. The list of all Network devices will
start populating. Wait for it to complete (this
could take several minutes).
2) Find the mXa-1502 device in the network
device list. The device MAC address is
appended to the device name, and is also
printed on the unit's serial number sticker.
Double-click on the mXa device name .
3) Double click on the resulting
icon.
4) Double-click on the resulting
file and the web server software will launch in
your default web browser.
5) Log in to AquaControl software. Enter your
User ID and Password, then click or touch the
Log In button. If this is the first log-in to a new
unit, use the factory default credentials.
5.3 iOS
1) Use a network device discovery app such as
"Flame" to see all available network devices.
2) Find the mXa-1502 in the list. It will have its
MAC address added after the device name.
3) Tap on the mXa-1502 device to launch
the software. Depending on the app used,
additional address or type lines may need to be
tapped before the software will launch.
4) Log in to AquaControl software. Enter your
User ID and Password, then tap the Log In
button. If this is the first log-in to a new unit,
use the factory default credentials.
5.4 Android
1) Install an Android application that can
discovery Network Plug'n'Play devices. There
are several apps that can do this. For example,
"UPnP Tool" is a free discovery app available on
the Google Play Store.
2) Launch the (UPnP Tool) network discovery
application, and it will provide a list of all
Plug'n'Play devices on your network. You
should see the MXA1502 listed, with its MAC
address appended to the name.
3) Click on the (info) information icon, ("i" in
a circle), to the right of the item to bring up
the details of the product. Then click on the
link or the link
to launch AquaControl. Your default browser
will launch and connect to the device. It is
recommended to use Chrome, Edge or Safari.
Other browsers are not supported, and may not
show content correctly.
If this is the first log-in to a new unit, use the
default factory default credentials.
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6 AquaControl™ Software
The mXa-1502 uses Ashly's proprietary built-in
server based software for setup and control. It
is not necessary to install the application onto
your computer or mobile device because the
program is already resident on the mXa-1502
and runs on your device browser.
A brief AquaControl software summary is
presented below:
6.1 Dashboard
The dashboard is the software screen where
the mXa-1502 first appears after logging in
with your browser. The dashboard shows the
Ashly device, number of inputs and outputs,
and firmware revision.
Remote Mixer and Remote DCA functions can
be deployed onto a remote tablet or mobile
device after they have been configured and
assigned to a limited-access operator profile
by the admin. Go to [Settings>Security] to set
up a new user profile and permissions, or use
Launch Quick Setup to similarly create a new
user account.
6.1b Launch Remote DCA
DCA groups are used to globally adjust the
relative levels of all channels assigned to that
group. In the DSP signal chain, a DCA block
must first be placed on every channel you
wish to assign to a DCA group, then enabled
and adjusted for each DCA group as desired.
A remote operator profile can be created
granting limited permission to use Remote DCA
on a tablet or mobile device.
6.1c Launch Quick Setup
Launch the Quick Setup, then run the wizards
to create a new user account, set up the
network, schedule an event, or trigger events.
6.1a Launch Remote Mixer
A remote mixer would typically get launched
from a tablet or mobile device, granting an
operator limited permission to control mixer
levels for a specific zone.
In the [Settings>Security] or Launch Quick
Setup screen, a new user profile is set up for
the operator whereby they are granted limited
access to the mixer used for that zone's output.
The operator would log in then launch the
remote mixer. The remote operator should
additionally check [Remember Me] when first
logging in order to retain the network link.
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6.2 Signal Chain
The core features of AquaControl are in its signal chain, where pluggable DSP blocks are placed
and edited as needed on input and output channels. Input signals can be routed into any of the four
mixers, then from the mixers to power amp outputs or the two aux outputs. The signal chain has an
Editor view and a Diagram view as shown below. Unused channels can be hidden from the display.
6.2e Presets
Presets and Sub-Presets are saved to the mXa-
1502 for scheduled or triggered recall.
6.2f
Input DSP blocks
The following DSP functions are available on
input channels.
• Audio Meter
• Autoleveler
• Brick Wall Limiter
• Compressor
• DCA gain
• Delay
• Gain
• Gate
• Graphic Equalizer
• High-Pass Filter
• Low-Pass Filter
• Parametric Equalizer
• Signal Generator
• VCA Gain
6.2g Output DSP blocks
All input DSP blocks except for Feedback
Suppressor are available on output channels,
plus the following:
• Ambient Noise Compensation
• Crossover
• FIR Filter
6.2a Mic inputs 1-8
• Set Gain, +48V phantom power, mute, DSP.
Also see Settings>Panels>Rear Panel screen.
6.2b Stereo inputs 9-12
• Mute, DSP
6.2c Mixers 1-4
• Edit mixer routing, levels, ducker, automixer,
show/hide chains, add to sub-preset
6.2d Speaker & Aux 1-2
• Source mixer select, mute
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The audio meter allows the signal to be
monitored at any location in the signal chain.
Display range is -60dBu to +20dBu.
Autoleveler
The auto leveler is a dynamics processor used
to automatically boost or cut a signal to a user-
defined target level.
The target level is the primary setting in the
autoleveler, as it determines the constant level
to which an input is boost or cut.
The autoleveler can be used in situations such
as speech re-enforcement, where an unknown
source level needs to be maintained at a
specific output level. For example, a podium
microphone where different speakers will be
presenting may have an auto-leveler applied to
ensure that strong or soft speakers' voices are
amplified appropriately.
The controls for the auto leveler are split
into two categories, basic and advanced.
It is recommended you start with the basic
controls, and if fine tuning is required, use the
advanced controls.
Warning: Depending on the settings, it is
possible to apply up to 27dB of gain with the
auto leveler.
Basic Parameters:
Target Level - The desired continuous output
level of the signal.
Action - Sets the ratio, hold time, and gain
change rates (see table for definitions). These
settings are general starting points for how the
auto leveler should behave. Action can also be
user defined under advanced controls, with
three drag points available for a more visual
adjustment.
Action
Ratio
Hold Time
Gain Increase
Gain Decrease
Aggressive 10:1
0 Seconds
20 ms/dB
5 ms/dB
Normal
4:1
1 Second
50 ms/dB
10 ms/dB
Gentle
2:1
2 Seconds
100 ms/dB
20 ms/dB
Maximum Gain - This is the total amount of
gain the auto leveler may apply before it stops
affecting the signal. Maximum gain controls
the threshold below target using the following
formula:
Threshold Below Target = Max Gain ÷ ( ( 1 ÷ ratio) - 1)
Advanced parameters:
Threshold Below Target - Determines the
relative input signal level above which the
autoleveler increases gain, below which no
action is taken.
Ratio - This is the ratio of the input level change
in dB to output level change in dB. It determines
the degree of boost or cut applied to a signal
to maintain the target level. The higher the
ratio, the closer the signal above threshold
will approach the target level. However, a
higher level also increases how aggressive the
autoleveler maintains that gain.
Gain Change Rate - Prevents sudden, choppy-
sounding level changes to an input signal
having a wide dynamic range.
Hold Time - This is the time after the input
signal falls below the threshold during which
the autoleveler's gain is held constant before
it returns to unity gain. Hold time is used in
conjunction with gain change rate to arrive at a
natural-sounding auto leveler action.
Both the advanced and basic control views
have a visible meter bar. It shows the gain or
attenuation applied by the auto leveler in 1 dB
steps.
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Brick Wall Limiter
Parameters:
Threshold - The signal level at which the limiter
begins to apply gain reduction to the signal.
Threshold range is -20dBu to +20dBu.
Ratio - There is no ratio control, ratio is fixed at
infinite. No signal increase above threshold.
Attack Time - The rate in mS/dB that gain
reduction occurs after the signal level crosses
threshold.
Release Time - The rate in mS/dB that any
gain reduction stops after the signal level drops
below threshold.
Detector Type - The detector type is fixed at
peak detect for the brick wall limiter
Compressor
The compressor function allows for user-
adjustable threshold, ratio, attack time, release
time and detector type.
An attenuation bus assignment is provided
to allow multiple limiters to force their gain
reductions to track each other, ie for stereo
signals. For peak limiting with infinite ratio, use
the brick wall limiter function.
Parameters:
Threshold - The signal level at which the
compressor begins to apply gain reduction
to the signal. Threshold range is -20dBu to
+20dBu.
Ratio - The amount of gain reduction applied to
signal level above threshold. Range is 1.2:1 to
infinite.
Attack Time - The rate in mS/dB that gain
reduction occurs after the signal level crosses
threshold.
Release Time - The rate in mS/dB that any
gain reduction stops after the signal level drops
below threshold.
Attenuation Bus - All compressors assigned to
the same attenuation bus will apply the largest
amount of gain reduction from any one of the
assigned compressors. This is typically used for
tracking compression across stereo signals.
The brick wall limiter is a compressor with a fixed
infinite ratio. Use a brick wall limiter to prevent
signal from exceeding a designated peak level.
The limiter function allows for threshold, attack
time and release time adjustments.
For a more natural sounding gain reduction that
allows some signal above threshold, use the
compressor function.
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Detector Type - This selects between peak or
average detector operation:
• Peak Detector - Setting the detector type
as peak means that only the peak level of
a signal is used to trigger the compressor.
Peak detect is typically used for limiter
applications where any signal level above a
certain point is undesirable. In peak detect
mode, attack and release times are both
adjustable.
• Average Detector - Setting the detector
type to average means that a computed
average signal level is used as the
compressor trigger instead of peak levels.
The averaging detector is more musical
and natural sounding and typically used to
"thicken" vocals. When using the average
detector, attack and release controls are
replaced with a single average rate control
which adjust the speed at which compressor
action occurs.
DCA Gain
A DCA gain block can be placed on any channel
in order to assign that channel to DCA groups
1-4. The channel's overall level to all DCA
groups, plus the level to each of the four DCA
groups is individually adjustable.
A DCA is typically set up and deployed to a
remote operator who has limited software
access but simply needs to control a zone's
overall volume via mobile device or tablet. See
section 6.1b for deploying a DCA to a remote
control operator.
Delay
Delay can be used on any
input or output channel.
Delay range is from 0-682ms.
Delay can be input by time
(ms) or by distance (ft, m), using the scroll
bar or by manually entering a numerical value.
Ambient air temperature can be entered to
automatically adjust for the speed of sound in
hotter or colder air.
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The gain block allows the
user to modify a signal's level
by either applying gain or
attenuation. The polarity of the
signal may also be inverted. The level control
allows for gain adjustment between +12db and
-50dB and OFF. The level fader can be adjusted
in 0.1dB increments.
Gain Parameters:
Level: Off, -50dB to +12dB in 0.1dB increments
Polarity: Normal or inverted
Gate
A noise gate can be used to minimize
unwanted, low level ambient sounds from
getting through on an individual input channel.
Threshold is the level above which an input
signal will pass through, below which its signal
is attenuated by the range value. Attack and
release control the time characteristics of the
gating action. Attack sets the amount of time
used to ramp the gain to unity. Release sets
the time required to attenuate the signal. The
gate may be assigned to a link group to link its
parameters with other channel gates.
Gate Parameters:
Threshold: The minimum input signal level
(also called key signal) required to open the
noise gate and allow signal to pass through.
Threshold can be set using the slide fader, text
entry box, or a drag point on the graph.
Attack: The rate at which input signal level rises
to unity gain after reaching the gate threshold.
Range: The amount of attenuation applied
to the gated signal when it remains below
threshold, sometimes referred to as "floor".
Release: The rate at which attenuation is
applied to the signal after it falls back below
gate threshold.
Advanced Mode Parameters:
Advanced mode allows the user to employ a
key filter for the gate. A key filter does not EQ
the signal passing though the gate, but rather
allows the gate threshold detector to respond
only to a frequency band within the signal as
determined by the filter. The key filter is a band-
pass filter with selectable center frequency and
bandwidth.
Key Frequency: This is the center frequency of
the key filter.
Key Bandwidth: This sets the bandwidth used
for the key filter, and is always on. The default
bandwidth setting is a very wide 15 octaves,
and as such has no frequency-specific effect.
To use frequency selective key threshold
detection, adjust the key bandwidth to a lower
setting and set the frequency and bandwidth
as desired.
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The graphic equalizer offers 31 standard ISO
center frequency controls with constant Q or
proportional Q filters, as well as adjustable filter
bandwidth.
GEQ Parameters:
Faders: Graphic representation of the 31 EQ
filter controls. Adjust faders one at a time, or
drag across any region of the graph to adjust
faders.
To return all GEQ faders to their "0" setting,
click or tap the "Flatten" button in the upper left
corner of the graphic display.
Filter Type: This selects proportional Q or
constant Q (default) filters.
• Constant Q filters have consistent Q/
bandwidth regardless of the amount of
boost or cut.
• Proportional Q filters get narrower with
increasing boost/cut.
Differences in filter shapes can be observed on
the frequency response display.
Bandwidth: This sets the bandwidth of all
GEQ filters to the same value within a range of
1/4 octave to 1/2 octave (before proportional
adjustment). The default bandwidth is 1/3
octave.
High-Pass Filter
A high-pass filter (HPF) is a single ended filter
without a level control, passing only signal
above the selected corner frequency. Filter
types include Bessel, Butterworth, Linkwitz,
and Linkwitz Notch, including a variety of filter
slopes.
HPF Parameters: filter type, frequency
Low-Pass Filter
A low-pass filter (LPF) is a single ended filter
without a level control, passing only signal
below the selected corner frequency. Filter
types include Bessel, Butterworth, Linkwitz,
and Linkwitz Notch, including a variety of filter
slopes.
LPF Parameters: filter type, frequency
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The PEQ parametric equalizer provides a
variety of powerful filters for adjusting signal
response with precision. A master on/off
button enables/disables the PEQ block.
10 individual filters are available for every PEQ
block, and each filter is capable of the following
types: Parametric, high-shelf and low-shelf
at 6dB/octave or 12dB/octave, all-pass,
variable-Q high-pass, variable-Q low-pass,
notch, and band-pass.
Select a filter number , then choose a filter
type, then adjust dragging its control node,
by using the slide-controls, or by entering
parameter values in the text boxes to the right
of each control.
PEQ Parameters:
Filter 1-10: filter On/Off, active selection
Filter Types: Parametric: Symmetric boost/
cut, allowing individual adjustment of center
frequency, level and bandwidth.
• High-Shelf: Asymmetric boost or cut with
"shelving" shape. Allows adjustment of the
corner frequency and amplitude. Slope
can be selected as 6 dB/octave or 12 dB/
octave.
• Low-Shelf: Mirror-image of high-shelf.
• All Pass: Provides no change in amplitude,
but -180 degrees of phase shift at corner
frequency.
• Notch: Infinite cut at specified center
frequency, with adjustable bandwidth or Q.
• Variable Q HPF: Second order high pass filter
with adjustable Q.
• Variable Q LPF: Second order low pass filter
with adjustable Q.
• Band Pass: This will pass signals within the
filter's response region. It allows adjustment
of center frequency and bandwidth/Q. Gain
is 0 dB at the center frequency.
Frequency: Selected filter center/corner
frequency.
Level: Selected filter boost/cut amplitude.
Bandwidth: Selected filter bandwidth (or Q). .
Filter Type Details
Parametric EQ Filters
Parametric EQ uses peak filters with the ability
to control boost or cut, frequency center, and
bandwidth. Think of one band of parametric
EQ as a single graphic equalizer fader, except
that the frequency is variable, and that the
bandwidth, or how "wide" the filter affects the
frequency spectrum at the center frequency,
is also variable. The smaller the bandwidth,
the less the audio signal on either side of the
frequency center is boost or cut, whereas a
larger "wider" bandwidth produces an audible
change to the overall tone of a signal.
Parametric filters are best used to hunt down
and eliminate problem feedback frequencies,
add or remove a characteristic "hot spot" from
microphones, or clean up room resonance
situations. It is well worth the time becoming
proficient with parametric EQ filters, as they
offer the best solution to many EQ problems.
Parametric filters have a boost/cut range
of +15dB to -30dB. There is more cut than
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boost because one of the more common
uses for parametric filters is to dramatically
cut, or "notch out", very narrow frequencies
(low bandwidth) in order to eliminate system
feedback problems.
Every instance of a parametric EQ filter has a
center frequency selected. Each filter's center
frequency is adjustable from 20Hz to 2000Hz
in 1/96 octave steps. Carefully sweeping a
narrow bandwidth filter through a problem
feedback area, with just a slight boost, is a
quick way to find the exact frequency causing
trouble. Once the offensive frequency has been
found, cut the filter's level, and the adjust the
bandwidth as narrow as possible while still
eliminating the feedback problem.
Bandwidth is adjustable from about 1/64
octave to four octaves, and the lower the
bandwidth, the less audible the filter action will
be. Finding the problem frequency is relatively
easy, but finding the best combination of cut
and bandwidth takes a little practice. Again
it is well worth the time getting comfortable
with the notching procedure, so that problems
can be quickly addressed with a sufficient but
minimal amount of correction.
Shelving EQ Filters
1st order filters use a gentle 6dB per octave
slope, while 2nd order filters use a 12dB per
octave slope for a more pronounced boost or
cut. All shelving filters have a boost/cut range
of +/- 15dB and frequency range from 20Hz
through 20kHz. Shelving filters are most useful
as broad tone controls to boost or cut the high
end or low end of an audio signal's frequency
content. Because they affect a wider spectrum
of audio, they are not as suitable for feedback
control as parametric filters.
All-Pass Filters
The all-pass option is a 2nd order all-pass filter
which provides a -180 degree phase shift at
the corner frequency. At very high frequencies
the phase delay approaches -360 degrees.
All-pass filters may be used to add frequency
dependent phase shift or phase delay to
the audio signal path. It does not produce a
measurable effect on the magnitude response
of the signal.
Signal Generator
The signal generator creates pink noise, white
noise or a sine wave output.
When a signal generator is placed in an input
signal chain and turned on, audio input for that
channel becomes disabled.
When placed in an output signal chain and
turned on, the mixer signal selected for that
output channel becomes disabled.
White noise is randomly generated broadband
noise.
Pink noise is bandwidth-limited 20Hz - 20kHz
to contain equal energy in any octave (-6 dB
per octave low-pass filtered).
The sine wave has adjustable frequency. All
three signal types can be generated at any level
from -50dBu to +20dBu.
Signal Generator Parameters
Signal Type: Pink noise, white noise, or sine
wave
Frequency: Frequency of signal to be
generated (sine wave only).
Level: RMS level of signal generated.
Bypass: Turns off generated signal and allows
audio signal to pass through.
VCA Gain
The three back-panel VCA (voltage controlled
amplifier) input pins are used to remotely
control the level of assigned inputs or outputs
using a simple potentiometer circuit.
In order to use the VCA inputs, one or more VCA
gain blocks must first be placed in the signal
chain, then assigned to VCA inputs 1-3. A
single VCA input pin can control multiple VCA
Gain blocks, as long as they are all assigned in
software to the same VCA input pin.
Use the Ashly WR-1 or equivalent to send
a variable DC voltage to any of the three
VCA pins. The current position of each
potentiometer is shown in the software.
Individual VCA inputs can be enabled or
disabled.
See sec. 4.4 or section 7.1 for more details.
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Ambient noise compensation (ANC) is an
automatic output level control that uses a
microphone input to monitor background noise
in a specific zone, then adjusts the overall
output level for that zone accordingly in order
to maximize intelligibility above the ambient
noise.
The ambient sensing microphone input can not
be routed to the zone's mixer.
The ambient noise sensing mic is processed
similar to a slow-responding SPL meter, which
is then used as the control signal for the
automatic level control of the program audio.
The ambient sensing microphone doesn't need
to be a high-quality microphone. It is only used
to detect the overall noise level in the room
and is not used for the direct program audio or
paging.
The placement location of the noise-detecting
microphone is very important for the ambient
noise compensation function to work well. A
unidirectional microphone pointed toward
the noise sources but away from any speakers
works best.
ANC Parameters:
Max Gain: This sets the maximum gain the
ANC can apply to the program audio. A typical
starting value is 10 dB.
Min/Base Gain: This sets the base level of the
program audio before any ANC action affects
it. When the noise detecting mic exceeds
the noise threshold, ANC applies gain above
the minimum gain setting according to the
Program/Ambient Gain Ratio setting. A typical
starting value for minimum gain is -20 dB.
Gain Change Rate: This is the rate at which the
ANC will adjust the gain, measured in seconds
per dB. A typical starting value is 2 seconds/dB.
Input Level Meter: This indicates the level
of the program audio before any ANC gain or
attenuation is applied.
ANC Gain Meter: This shows the current gain
or attenuation being applied to the program
audio by the ANC function.
Mixer Input Channel: This selects the input
channel to be used for the ambient noise
detecting microphone. The microphone signal
is taken after any input signal path processing.
Noise Threshold: This sets the ambient noise
mic level above which the ANC will begin
increasing the program audio gain above the
minimum gain setting. A typical starting value
is -30 dBu. Keep in mind that any changes to
the noise-sensing microphone gain will affect
the action of the noise threshold control.
Program/Ambient Gain Ratio: The ratio of
dB increase in program audio level for every 1
dB increase in ambient noise level. A typical
starting value is 1.0 which means that for
every 1 dB increase in ambient noise above the
threshold, the ANC will increase the gain of the
program audio by 1 dB.
Ambient Noise Compensation - ANC (output only)
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Average Noise Meter: This meter indicates
the average level of the selected ambient noise
detecting microphone.
ANC Setup Procedure
• In software, place an ANC block on the
output channel to be used for background
music or voice paging in that zone.
• Open the ANC block to edit its control
window. Set the ANC controls to the typical
settings described above, which are the
default settings of a new ANC block when it
is first placed.
• Turn the ANC function ON.
• Select the noise-sensing microphone input
from the drop-down box labeled "Mixer
Input Channel".
• Physically locate the noise-sensing
microphone in the zone by pointing it toward
the primary noise sources such as groups of
people, HVAC equipment, vehicle traffic etc,
but pointed away from the sound system
speakers or their direct reflections.
• Add appropriate mic preamp gain to the
ambient-sensing mic channel, add gain,
EQ, HPF or LPF, compression, or even a
noise gate if desired. The noise-detecting
microphone signal will appear on the
Average Noise input level meter. To adjust
ANC controls for good-sounding operation
without people present, a pink noise source
or even a portable stereo can be placed
near the expected ambient noise source to
simulate anticipated volumes.
• Beginning at -40dBu, adjust the Noise
Threshold control to respond to the average
noise input level above which point you want
the program audio to begin increasing.
• Increase the zone noise source volume until
you see the average noise meter rise above
your noise threshold setting. You should
begin to see the ANC Gain meter slowly rise
above the minimum gain setting.
• Slowly increase the noise source further and
adjust the program/ambient gain ratio for
the desired amount of noise compensation.
• Continue to increase the noise source
volume to the highest anticipated level.
Adjust the max gain to a level which limits
the maximum gain that the ANC applies to
the program audio so it will not become too
loud or clip.
• The gain change rate can be adjusted
according to how fast you would like the
gain changes to take place in response to
changes in ambient noise.
• Be aware that an improperly setup ANC can
result in runaway gain where the program
audio is picked-up by the noise-sensing
microphone as background noise. The
result is not necessarily feedback squeals,
but the gain of the program audio could
ramp up to the max gain value even with no
ambient room noise. The best remedy for
this problem is to locate the noise-sensing
microphone closer to the expected noise
sources and further away from the sound
system speakers or their reflections. A baffle
can be constructed between the speaker
and microphone to block direct or reflected
sound pickup. Also, the Program/Ambient
Gain Ratio can be lowered to reduce the
susceptibility to gain runaway.
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Crossover (output only)
Crossover blocks can be placed on both
speaker and Aux output channels. A high-pass
and low-pass frequency is applied for each
crossover filter, along with filter type, to band-
limit the signal for that output.
Outputs populated with a crossover block will
be shown on the edit screen for clear visual
representation of the crossover settings. Select
any output to edit its filter parameters.
The default filter type is 24dB/oct Butterworth,
but can be changed to any of the following:
Available Filter Types:
Bessel: 2nd, 3rd, 4th and 8th order (12, 18,
24,48 dB/octave)
Butterworth: 2nd, 4th and 8th order (12, 24,
48dB/octave)
Butterworth/Linkwitz: 3rd order (18dB/oct.)
Linkwitz: 2nd, 4th and 8th order (12, 24,
48dB/octave)
Linkwitz Notch: 4th and 8th order (24, 48dB/
octave)
The following details summarize filter types
offered:
Butterworth
Butterworth filters individually are always
-3dB at the displayed crossover frequency
and have a "maximally flat" passband and
sharpest transition to the stop-band. When
a Butterworth HPF and LPF of the same
corner frequency are summed, the combined
response is always +3dB. Note that when
12dB/octave Butterworth HPF and LPF filters
are used to create a crossover, the polarity of
one of the outputs may need to be inverted to
compensate for the phase shift of the filter.
Bessel
These filters as implemented in Ashly devices
are always -3dB at the displayed crossover
frequency. Bessel filters have a maximally
flat group delay. Stated another way, Bessel
filters have the most linear phase response.
When a Bessel HPF and LPF of the same
corner frequency are summed, the combined
response is +3dB for 12dB/oct, 18dB/oct, and
48dB/oct Bessel filters, and -2dB for 24dB/
oct Bessel filters. One of the outputs may need
to be inverted when using either 12dB/oct
or 18dB/oct Bessel HPF and LPF's to create a
crossover to compensate for the phase shift of
the filter.
Linkwitz
The 12 dB/oct, 24dB/oct, an 48dB/oct
Linkwitz-Riley filters individually are always
-6dB at the displayed corner frequency.
When a Linkwitz-Riley HPF and LPF of the
same corner frequency are summed, the
combined response is always flat. With 12dB/
oct Linkwitz-Riley crossover filters, one of the
outputs must be inverted or else the combined
response will have a large notch at the
crossover frequency.
Linkwitz Notch
4th and 8th order filters are offered.
Crossover Notes
When used in a crossover, filter type will
affect the way adjacent pass-bands interact
near the crossover point. When electrically
summed, 24dB/octave Linkwitz-Riley filters
produce a flat transition through the crossover
region, assuming that the HPF and LPF are
set to the same corner frequency. This makes
24 dB/octave Linkwitz-Riley filters quite
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popular. However, crossover filter types
must be carefully selected to match the
acoustic response of the specific loudspeaker
system. Please consult the manufacturer of
the loudspeaker system for recommended
crossover frequencies and filter types.
FIR Filter (output only)
A FIR (finite impulse response) filter is typically
used when a speaker manufacturer develops
and provides a proprietary FIR coefficient
file that corresponds directly to their own
loudspeaker or speaker cabinet, addressing
frequency and phase issues based on their own
measurements and formulations.
Plugging in a FIR filter DSP block then clicking
on it will prompt the user for a *.fir or *.csv
text file, which is then loaded and applied to
the output DSP. The two file types will have
identical coefficient code, however the *.fir file
may add comments (designated by a semi-
colon) or a key=value pair definition such as
sample rate. Either file type will work.
*.fir file example:
; comments section
sampleRate = 48000
+0.0000042920
+0.0000030236
-0.0000040482
*.csv file example:
+0.0000042920
+0.0000030236
-0.0000040482
The software does not offer the ability to view
or edit the EQ curve as produced by a FIR filter.
FIR filters on this device can have from 2 up to
512 taps.
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6.2h Signal Chain > Mixers 1-4
Automixer
The automixer is used to automate the mixing
of multiple speech microphones to follow
the dynamic nature of the speech dialog and
attenuate idle microphones. The automixer
may also be used in conjunction with the
autoleveler, compressor, or gate on the
input signal paths. This gives the user more
advanced control of varied input signal levels
produced by different talkers. A feedback
suppressor function may also be used on
the inputs to further help control feedback
problems.
Ashly Auto Mixer Technology
The automixer function is a "gain-sharing"
type which automatically makes smooth gain
transitions on all automixer input channels to
achieve a constant total system gain. This gain-
Four independent mixers can be assigned to
the two amplifier outputs or two aux outputs.
Each mixer offers independent input channel
routing, level control, mute, ducking enable,
input automix assignment and response time.
Stereo line inputs can be set for left input only,
right input only, or summed mono for that
channel.
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sharing method of automixing has been found
to be superior to gating automixers due to the
following characteristics:
• The automatic gain action has a smooth
transparent sound as though a person
were mixing the inputs to follow the audio
program rather than rapid gating on-and-off
of channels.
• Properly designed gain-sharing automixers
correctly adjust for mixing of coherent
versus non-coherent signals for a more
consistent final mix level without feedback
as channel gains are automatically
changing.
• A gain-sharing automixer is easier to setup
and adjust without the need for threshold,
attack, release, depth, and number-of-
open-mics (NOM) controls.
Mixer input channels can be individually
selected as auto-mixed or manual mixed, all
summed together to the same mixer output.
Channels which are selected as auto will
participate in the automix in that they will
contribute to the automatic adjustment of
other automix channel gains. Likewise, their
channel gain will be affected by the signal
level present on other automix channels.
Manual mixer channels (not selected as
auto) will mix independently of the automixer
channels into the output, only controlled by
their fader setting. The fader on auto channels
still controls the input level before automatic
mixing takes place so that more of the system
gain can be applied to one channel versus
another.
Automixer Setup
Setting-up the Ashly gain-sharing automixer
is quite simple compared to other gating-
type automixers. The following procedure is
recommended for most multi-microphone
speech applications.
• Start with all mixer faders off and the
automixer response time set to 0.1 seconds.
• Configure the mixer input channel routing
as desired and select on the
channels to be automixed.
• Start with one of the main speech channels,
or one which is centrally located. Slowly
increase the fader for this one channel just
until feedback starts, then lower the fader
approximately 3 dB to stay comfortably
below feedback. This sets the total mixer
system gain.
• Now increase the level of the other automix-
enabled input channels to approximately
the same position as the first channel.
The system will not feedback because the
automixer will slowly attenuate the active
channels as more channels are turned-on to
maintain a constant total system gain.
• During the program, individual channel
faders may be raised or lowered to adjust for
the weakness or strength of the respective
talkers while the automixer is active.
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Signal Chain > Ducking
This dedicated ducking setup screen is used for
easy editing and at-a-glance visibility.
• Each of the four mixers (zones) have their
own independent ducking setup.
• Stereo inputs 9-12 sum both inputs to duck
other channels.
• Priority: Each input can be assigned a
ducking priority from 1 to12, with 1 being
highest priority. Multiple channels can share
the same priority level.
• Filibuster: Filibuster On means that channel
will maintain control over all other channels
until its input signal is no longer present,
even if other channels have a higher priority.
• Depth: Ducking depth is the reduction
in signal level for that channel when it is
ducked by another channel with a higher
priority. Ducking depth can be set from 0dB
to -inf.
• Release: Ducking release time is how long
it takes for ducked signals to return to their
normal level. Release time can be set from
50ms/dB to 1000ms/dB.
• Trigger Threshold: Trigger threshold
determines the signal level required to
activate that channel's ducking control over
other lower priority channels. To prevent an
input channel from ducking other channels,
set its priority to 12, or set its trigger
threshold to maximum.
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Signal Chain > Routing
The signal chain routing screen allows fast
setup and review of all input and mixer signal
routings, plus mixer source assignment for the
two amplifier channels and two aux outputs.
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The settings screens are where general settings, device panel settings, network settings, and security settings are configured.
6.3a Settings > General Settings (not shown)
This shows the current device, its firmware/hardware revision, allows naming the device and group, and configures the Real Time Clock. This is also
where you export/import all settings to back up or clone your device, and where you perform firmware update if one is available on the Ashly website.
6.3b Settings > Panels > Front Panel (shown below)
• Enable Front Panel Power Button On/Off
• Enable Front Panel Lights On/Off
• Enable Sleep Mode On/Off plus sleep time
setting. Note: Sleep time of "0" = 15 seconds.
• Enable Power On/Off
• Enable Software Standby On/Off
• Shows Rear Panel Standby Pin status
• Shows current front panel LED status
• Shows front panel select buttons A-D
current assignment status
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6.3c Settings > Panels > Front Button Settings
• Select Mode: Front panel
buttons A-D can be
configured as a group to:
None (default), Source
Select, Preset Recall, Sub-
Preset Recall.
• Presets/Sub-presets are
chosen from drop down list.
• Source Select: each button
can select one exclusive
input to any mixer.
6.3d Settings > Panels > Rear Panel
• Set +48V phantom power
On/Off, mic preamp gain
from 0dB to 66dB, view
mic input signal level
• VCA Inputs (1-3): Shows
current control position
• Trigger 1-8 status, press
the [Edit] button in the
Triggers section to view all
current trigger events
• Output mode as set from
rear panel DIP switches to
Low-Z, 25V, 70V, or 100V
• Bridge mode: Enabled,
disabled (default)
• Standby pin polarity:
Trigger on high, or trigger
on low (default)
• GPO 1-2 pins: Set/display
current GPO pin status
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6.3e Settings > Network
Network configuration can be set and saved
as automatic (DHCP) or manual (Static IP).
The device MAC address is also displayed. An
"Identify Device" button pings the device to
visually identify itself by turning its COM LED
on for 10 seconds. The Reset button sets all
network parameters back to defaults.
6.3f
Settings > Security (not shown)
There are four levels of security roles: Admin,
Guest Admin, Operator, and View Only.
Usernames and accounts are first defined by
the Admin using the New Profile button, then
given a security role and password.
• Admin always has full access. There can be
only one admin role.
• Guest Admin roles can be granted full
access, but each permission must be
individually authorized by the primary
admin. Guest Admin permissions include:
- Edit Accounts
- Edit Device Misc.
- Event Log Clear
- Event Scheduler edit
- Front Panel Controls edit
- Rear Panel Controls edit
- Network Settings edit
- Paging Ducking edit
- Preset edit
- Preset Recall
- System Time edit
- Trigger Settings edit
- Edit Signal Chain
- Import/Export Setting
• Operator roles have a shorter list of
permissions which must first be authorized
by the Admin. Use the Operator role to
deploy Remote Mixer or Remote DCA
control. Operator permissions include:
- Edit Signal Chain
- Front Panel Controls View
- Preset Recall
- DCA Remote
- Mixer 1-4 Remote
• View Only user roles are denied editing
access to all controls and settings.
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Events can be scheduled using the internal
real-time-clock (RTC), or triggered by a logic
input connected to rear panel Trigger Input
1-8. Multiple actions can be included in a single
event, and a delay time can be added after
each action as the event sequence is executed.
Use the New Event command to create events.
Events can also be cloned, edited, and deleted.
Events > Event List
All programmed events, scheduled or
triggered, are listed here by event name, event
type, and event actions. Click on any event in
the list to test, clone, edit, or delete that event.
New events can be added from this screen.
Events > Scheduled Events
Scheduled events are programmed and saved
within the unit, then executed based on the real
time clock. Events can be scheduled for one
time, daily, weekly, or yearly.
Several actions can be grouped together in
sequence, but still be part of a single scheduled
event. A delay time up to 99 seconds can be
inserted after each individual action within the
sequence.
Scheduled event action types include the
following:
• Cancel Today's Events - over-rides all other
scheduled events for the day, ending at
midnight.
• Channel Mute - Mutes selected input or
output channels, but does not mute mixers
• GPO High - Sets GPO pin 1 or pin 2 to logic
high
• GPO Low - Sets GPO pin 1 or pin 2 to logic low
• Gain Decrement - Sets the value of - gain
change for all selected input or output
channels
• Gain Increment - Sets the value of + gain
change for all selected input or output
channels
• Mixer Mute - Mutes selected mixer
channels, but does not mute input or output
channels
• Power On - Turns the amplifier on
• Preset Recall - Recalls one preset from
device memory
• Source Select - Sets designated input
channels for one or all four mixers
• Standby - Puts the unit in standby mode
• Sub Preset Recall - Recalls one sub-preset
from memory
Events > Triggered Events
Triggered events are assigned to one of eight
rear panel trigger input pins. The event is
triggered when the input pin is connected to
the ground pin.
Triggered event action types include the
following:
• A/B Source Select - For each or all four
selected mixers, this toggles between two
sets of selected input channels
• Action Sequence - Select multiple actions
for one event trigger. Delay time can be
added following each action
• Channel Mute - Mutes selected input or
output channels, but does not mute mixers
• General Purpose Output Toggle - Toggles
the logic output state of selected general
purpose output 1 or 2
• Mixer Mute - Mutes selected mixer
channels, but does not mute input or output
channels
• Paging - Selects one channel to be used
as a paging input, also selects one or more
mixers to apply the paging input t
• Pause/Resume Schedules - Interrupts
scheduled events, resumes scheduled
events when open
• Power On/Off - Toggles between power on
and power off
• Preset Toggle - Toggles between two
selected presets
6.5 Diagnostics
Diagnostics monitor and record a log of
selected activity, useful for debugging system
issues or viewing user activity. The log can be
exported as *.csv file.
The log feature can monitor and record the
following activity categories, and can display
results within a specified date range.
- Status
- Operation
- Events
- Presets
- Security
- Network
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7 Remote Control
7.1 VCA Level Control Inputs
Remote DC level control is available on these
three VCA (voltage controlled amplifier)
inputs. A VCA Gain block is first placed in any
input or output signal chain, then assigned to
a VCA input. Multiple VCA gain blocks can be
assigned to the same VCA input pin.
Ashly WR-1, WR-1.1, or WR-1.5 remotes can be
used for DC level control, or a custom control
can be made using a 10k Ohm potentiometer
and wired as shown. The dot indicates the
potentiometer clockwise position, full volume.
7.2 Trigger Logic Inputs
Eight programmable trigger inputs are
available for use with contact closure switches.
Triggered events are programmed in the
software Events screen, [Events>Triggered
Events> New event].
Triggered events include: A/B Source Select,
Action Sequence, Channel Mute, GPO Logic
Toggle, Mixer Mute, Paging, Pause/Resume
Schedules, Power On/Standby, and Preset
Toggle. Connecting a trigger input to the [G]
pin (ground) triggers the event.
Current trigger status can be viewed in the
[Settings>Panels>Rear Panel] screen.
7.3 GPO Logic Outputs
Two GPO (general
purpose output) pins
are available for driving
external device logic
inputs to effect a lighting
change, motorized
curtain, projector screen,
etc. GPO logic status can
be toggled as part of a
preset, or can be toggled
from a scheduled or triggered event.
Current logic High or Low status is viewed or set
in the [Settings>Panels>Rear Panel] screen.
7.4 Amp Fault Logic Outputs
An amplifier fault is any
condition that places the
amplifier into a protect
state. Faults can include
output overcurrent,
thermal, mains over-
voltage, internal mains
fuse, and output DC. If an
amplifier channel goes
into protect mode, the amp fault output pin for
that channel goes logic low.
7.5 Remote Standby
Standby mode puts the amplifier into a reduce
power state. Standby mode can be activated
via software, scheduled
or triggered events, or
with the standby pin
Euroblock connection.
Standby pin polarity
can be set in software
to Trigger on Low
or Trigger on High
[Settings>Panels>Rear Panel].
The Standby contact closure always has
priority over software or event driven standby.
7.6 Ashly Remotes
WR-1.0 and WR-1.1
The WR-1 and WR-1.1 are remote level
controllers used for DC level control inputs.
The WR-1.0 (dual potentiometer) and WR-1.1
(single potentiometer) mount to a standard
North America electrical wall box. The remote is
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mXa-1502 • Operating Manual
wired to the mXa-1502 Euroblock VCA pins V+,
1, 2, or 3, and ground, then associated in Ashly
AquaControl™ software with a VCA Gain block
placed anywhere in the signal chain.
If using a potentiometer other than the WR-1,
use 10k Ohm and wire the mXa V+ pin to the
potentiometer's clockwise terminal, GND to the
counter-clockwise terminal, and VCA pin 1-3
to the wiper. Do not connect the WR-1 ground
connection to any external grounds.
WR-1.5
The WR-1.5 offers
a single rotary
potentiometer for DC
level control, plus with
a four-position rotary
switch for triggering
events using mXa-
1502 trigger inputs.
WR-2 Event
Trigger Switches
The WR-2 lockout
push-button remote
can trigger up to four
different events that
have been programmed
into the mXa-1502.
Each pushbutton switch
gets connected to a
trigger input pin. When
a switch is pressed,
it triggers the event
programmed for that
trigger input.
8 Amplifier Protection
Over Current Protection - When the output
current exceeds the amplifier's safe operating
limits. This occurs in the amplifier output stage.
Thermal Protection - The amplifier senses out-
put device temperature and adjusts fan speed
to keep the operating temperature within ac-
ceptable limits. If device temperatures exceed
that limit, the input level to that channel is first
reduced, and as a last resort the power supply
will be switched off while the fan continues to run.
Mains Protection – Protection within the
power supply includes:
• In-rush Current Limitation during power up
• Mains Over Voltage Detection
• Internal Mains Fuse Protection
To protect the Mains fuse against AC
overcurrent due to excessive audio output
current, there is a protection scheme indicated
on the front panel which reduces audio output
level until the overcurrent condition is no longer
present.
DC Output Protection – If the amplifier senses
DC on an output it shuts down the power
supply.
9 Troubleshooting
No AC Power
• Is the detachable AC power cord properly
installed? Is it plugged into a known live
outlet?
• Has the power switch been disabled?
No Amplifier Output
• Is the amplifier in protect or standby mode?
• Is the input signal properly wired to either a
mic/line input or RCA line input?
• Are remote control or software level controls
turned down?
• Is the signal muted from DSP, remote
control, mixer, or a triggered/scheduled
event?
• Are dynamics or gain tool settings in
the signal chain allowing signal to pass
properly?
• Is signal routed to the correct output
channel in the mixer matrix?
• Are level controls set properly in the mixer?
• Has a scheduled or triggered event changed
settings?
Still Not Working?
• Contact Ashly technical support at 1-800-
872-0010 x124, or email [email protected]
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mXa-1502 • Operating Manual
Maximum Output Power
CEA-2006/490A, 20ms 1kHz 1%THD+N, 480ms
1kHz -20dB, 120VAC all channels driven at
rated load ow Z output, per channel
Low Z output, per channel
8 Ohm
150W
4 Ohm
150W
2 Ohm
150W
Low Z output, per bridged channel pair
8 Ohm
300W
4 Ohm
300W
Hi-Z output, per channel
25V
150W
70V
150W
100V
150W
Hi-Z output, per bridged channel pair
25V
300W
70V
300W*
100V
300W*
*May require Class 3 speaker wiring,
all others use Class 2 wiring.
Total AC Mains Power Draw
Typical input, all channels driven, 120VAC
Sleep
<1W
Standby
15W
Idle (no signal)
33W
1/8 max power, 2 Ohm
133W
AC Mains Current Draw
Typical input, all channels driven
120VAC (divide in half for 240V)
Sleep mode
0.094A
Standby mode
0.2A
Idle (no signal)
0.35A
1/8 max power, 70V
1.16A
Thermal Dissipation
in BTU/hour with typical input, all channels
driven, 120VAC
Sleep mode
2.14BTU/h
Standby
51BTU/h
Idle (no signal)
112BTU/h
1/8 max power, 2 Ohm
325BTU/h
Damping Factor ,
8 ohm load, <1kHz
>250
Distortion,
SMPTE, typical
<0.5%
Distortion,
THD-N, typical
<0.5%
Channel Separation,
dB from full output, 1kHz
-75 dB
Signal to Noise,
20Hz-20KHz, unweighted
>99 dB
Frequency Response
20Hz-20kHz, +/- 0.05dB
General Specifications
Mic/Line Input
Euroblock 3.5mm
Input Impedance
Active balanced, 18kΩ
Maximum Input Level
+21dBu
Input Gain Range
0dB to +66dB
Phantom Power
+48V, software
switchable per channel
Stereo Line Input
Dual RCA, unbalanced
Input Impedance
10.0KΩ
Maximum Input Level
-10dBv (-7dBu)
AUX Output
Aux 1, Aux 2, Euroblock
3.5mm, balanced
AUX Out Maximum Level +21 dBu
Speaker Output
Euroblock 7.62mm
VCA 1-3 input
Euroblock 3.5mm
+1.8V, VCA pins 1-3, G
Data Connection
(reserved for future use)
Euroblock 3.5mm
Data In/Out, +18V, Gnd
Trigger 1-8
contact closure input
Euroblock 3.5mm
assignable function
GPO 1 & 2 general
purpose outputs
Euroblock 3.5mm
assignable function
Amplifier Fault 1 & 2
logic outputs
High (+3V) when amp
channel is on and ok,
low (0V) when amp
channel is off or in a
protect/fault state
Remote Standby
Contact Closure
Euroblock 3.5mm
close to engage standby
Ethernet
RJ45, 100MB/1GB
Output Mode select
per amp channel
4 pos. DIP switch
Lo-Z - 4Ω, 8Ω
Hi-Z - 25V, 70V, 100V
Front Panel LED Features
Clip/Mute LED
Red, ON at max output
power, mute, level fully off
Signal LED
Green, ON at 18dB
below full output
Current LED
Green, ON when 0.5A
current delivered to
speaker load
Temp LED
Yellow, ON when
countermeasures
applied for excess heat
Power LED
White, ON, OFF,
Flashing for Standby
Com LED
Green, ON during
Ethernet activity
Protect LED
Red, ON for amp fault
causing shut-down
Sleep LED
Blue, ON for sleep mode
Disable LED
Yellow, ON when power
switch disabled
Bridge LED
Green, ON when amp
is in bridge mode
Front Panel
Select Buttons
A, B, C, D, programmable
for source select or
preset recall
Factory reset switch
see section 3.3
Processors
Input A/D:
24 bit
Output D/A:
24 bit
DSP Processors:
32-bit floating point
Sample Rate:
48kHz
Propagation Delay
1.42 ms
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mXa-1502 • Operating Manual
Remote Control Devices
WR-1, WR-1.1,
WR-1.5, WR-2
Amplifier Protection
inrush current, output
DC, temperature
monitoring, output
over-current protection,
internal mains fuse
Cooling Fan
Variable, air flows in the
sides and out the front
Software Control
Ashly AquaControl™
Software, served from
amplifier
Power Requirements
100-240VAC ±10%,
50/60Hz
Power Cable Connector
15A Edison, detachable
Unit Weight
11.6 lbs (5.26 kg)
Unit Dimensions
19”W x 1.75”H x 14.6"D
(483 x 44.5 x 371mm)
Shipping Weight
14.5 lbs (6.58 kg))
Shipping Dimensions
25.2"W x 2.5"H x 19.5"D
641mm x 64mm x 495mm
Environmental
40°-120°F (4°-49°C)
noncondensing
Safety/Compliance
cTUVus, CE,
FCC Class B, RoHS
Ashly AquaControl™ Software Specifications
Dashboard
General
Display
current device, number of
inputs, number of outputs,
firmware revision
Controls
Launch Remote Mixer,
Launch Remote DCA,
Launch Quick Setup
Signal Chain
General
Screen Display Mode
Editor or Diagram
Hide Unused Channels
On/Of
Presets
Save Preset / SubPreset
Mic Inputs 1-8
+48V Phantom Power
per channel, On/Off
Mic 1-8 Preamp Gain
0dB to +66dB, 6dB steps
Mute
per channel, On/Off
Stereo Line Inputs 9-12
Mute
per channel, On/Off
Mixer 1-4
Input Level Controls
-50dB to +12dB, Off
Input Level Meters
-60dBu to +20dBu
Mute
mute per channel,
mute all
Route Enable
per input channel,
enable/disable
Automix Assign
per input channel,
enable/disable
Automix Response
0.01s to 1.2s
Ducker
per mixer, On/Off
Output Channels 1-4
Mute
per channel, On/Off
Ducking
Ducker
per mixer, On/Off
Available Input
Channels
1-12
Priority
1-12
Filibuster
On/Off
Depth
0dB to 30dB
Release
50ms/dB to 1000ms/dB
Trigger Threshold
-80dBu to +20dBu
Routing
Available Matrix
Inputs
12
Available Mixers
4
Available Outputs
4
Output Source Select
mixer 1-4, none
Signal Chain > Pluggable DSP Blocks
Ambient Noise Compensation (outputs only)
On/Off, Compare
Compensation:
Max Gain
-20dB to +20dB
Min Gain
-40dB to +20dB
Gain Change Rate
0.2s/dB to 20s/dB
Input Level
-40dBu to +20dBu
Attenuation Meter
-40dB to 0dB
Ambient Noise:
Mixer Input Channel
Mic 1-8, Stereo Line 9-12
Noise Threshold
-40dBu to +20dBu
Avg. Noise Meter
-40dBu to +20dBu
Audio Meter
Range
-60dBu to +20dBu
Autoleveler (On/Off, Compare)
Action
gentle, normal, aggressive
Target Level
-40dBu to +20dBu
Maximum Gain
0dB to +22dB
Metering
Input, Gain
Advanced Autoleveler Controls:
Ratio
1.2:1 to ∞
Gain Decrease Rate
5ms/dB to 1000ms/dB
Gain Increase Rate
5ms/dB to 1000ms/dB
Hold Time
0-6 sec
Threshold Below Target
-30dB to 0dB
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mXa-1502 • Operating Manual
Brick Wall Limiter
On/Off, Compare
Threshold
-20dBu to +20dBu
Ratio
infinite
Attack
0.2ms/dB to 50ms/dB
Release
5ms/dB to 500ms/dB
Compressor (On/Off, Compare)
Detector Type
Peak/Average
Attenuation Bus
none, 1-4 available
Threshold
-20dBu to +20dBu
Ratio
1.2:1 to infinite
Attack
0.2ms/dB to 50ms/dB
Release
5ms/dB to 1000ms/dB
Metering
Input & Output,
total attenuation,
superimposed on graph
Crossover (outputs only)
Output Select
Speaker Out 1-2, Aux Out 1-2
Filter Frequency
20Hz-20kHz
Filter Types:
Bessel
12/18/24/48 dB/oct
Butterworth
12/24/48 dB/oct
Butterworth/
Linkwitz
18 dB/oct
Linkwitz-Riley
12/24/48 dB/oct
Linkwitz Notch
4th order, 8th order
DCA Gain (On/Off, Compare)
Level
-50dB to +12dB
Polarity
normal, inverted
DCA Groups 1-4 (per group):
Level
-50dB to +12dB
Mute
On/Off
Enable for channel
On/Off
Delay (On/Off, Compare)
Delay Time
0-682 ms
Delay Length (at 22°C)
0-770 ft, 0-234 m
Temperature
Compensation
-25°F to +122°F
(-30°C to +50°C)
Feedback Suppressor (inputs only)
On/Off, Compare ??? FEATURES MISSING?
Filters
12
On/Off per filter
yes
Single/global filter lock
yes
Detector Sensitivity
five levels
Filter Type
notch, parametric
Filter Modes
restricted, floating,
manual
Float Time ???
5 seconds to 24 hours ???
Filter Frequency
20Hz-20kHz
Filter Level
Notch
-∞
Parametric
-30dB to +15dB
Filter Bandwidth (Q)
0.016 to 3.995 oct,
(90 to 0.267 Q)
FIR Filter (outputs only)
On/Off, Compare
Sample Rate
48kHz
Number of Taps
up to 512
Loadable File Types
*.csv, *.fir
Gain (On/Off, Compare)
Range
-50dB to +12dB, polarity invert
Gate (On/Off, Compare)
Threshold
-80dBu to +20dBu
Attack
0.2ms/dB to 50 ms/dB
Range
0dB to 100dB, off
Release
5ms/dB to 1000ms/dB
Metering
Key Signal, Gate LED
Advanced Gate Controls:
Key Engage
enable/disable
Key Frequency
20Hz-20kHz
Key Bandwidth
0.016 to 3.995 oct
Graphic Equalizer (On/Off, Compare)
Number of Filters
31
Filter Type
constant Q, proportional Q
Bandwidth
0.499 to 0.25 oct
High Pass Filter (On/Off, Compare)
Filter Types:
Bessel
12/18/24/48 dB/oct
Butterworth
12/24/48 dB/oct
Butterworth/Linkwitz
18 dB/oct
Linkwitz-Riley
12/24/48 dB/oct
Linkwitz Notch
4th order, 8th order
Low Pass Filter (On/Off, Compare)
Filter Types:
Bessel
12/18/24/48 dB/oct
Butterworth
12/24/48 dB/oct
Butterworth/Linkwitz
18 dB/oct
Linkwitz-Riley
12/24/48 dB/oct
Linkwitz Notch
4th order, 8th order
Parametric Equalizer (On/Off, Compare)
Number of filter bands
10
Filter Types:
Parametric
Frequency
20-20kHz
Level
-30dB to +15dB
Q Value
0.016 to 3.997 oct
Hi or Low Shelf, 6 or 12 dB
Frequency
20Hz-20kHz
Level
-30dB to +15dB
All Pass
Frequency
20Hz-20kHz
Variable Q HP/LP
Frequency
20Hz-20kHz
Q Value
90 to 0.267
Bandwidth Value
0.016 to 3.997 oct
Notch
Frequency
20Hz-20kHz
Q Value
90 to 0.267
Bandwidth Value
0.016 to 3.997 oct
Bandpass
Frequency
20Hz-20kHz
Q Value
90 to 0.267
Bandwidth Value
0.016 to 3.997 oct
36
mXa-1502 • Operating Manual
Signal Generator (On/Off, Compare)
Signal Type
pink noise, white noise, sine wave
Signal Level:
off, -50dBu to +12dBu
Sine Wave Frequency
20Hz-20kHz
VCA Gain (Compare)
Controls
On/Off, VCA 1-3 position
Linking
Most DSP functions can be
linked to 1 of 16 link groups
Settings Specifications
General
Real Time Clock
Automatic/Manual
Panels - Front Panel
Enable Power Button
On/Off
Enable LEDs
On/Off
Enable Sleep Mode
On/Off
Sleep Mode Timer
minutes up/down, off
Power On/Off
On/Off
Software Standby
On/Off
Standby Pin
Disengaged
On/Off
Source Select
Button A-D
current status shown
Panels - Front Button Settings
Select Mode
preset, sub-preset,
source select, none
Presets
user defined
Sub-Presets
user defined
Source Select
source mixer 1-4,
exclusive input 1-12
Panels - Rear Panel Settings
Mic Input 1-8
+48V phantom power, mic gain
VCA Inputs 1-3
current position shown
Trigger Inputs 1-8
open/closed status shown
Power plug
present/missing
Speaker
Output Mode
low impedance,
25V, 70V, 100V
Bridge Mode
enabled/disabled
Standby Pin
Polarity
trigger on low,
trigger on high
Standby Pin
Disengaged
On/Off
GPO Pins 1-2
current state shown
Network Settings
Network
Configuration
automatic (DHCP),
manual (static IP)
Security Settings
Profile Roles
Admin, Guest Admin,
Operator, View Only
Event Specifications
Scheduled Event
Types
None, Cancel Today's
Events, Channel Mute,
GPO High, GPO Low,
Gain Decrement, Gain
Increment, Mixer
Mute, Power On, Preset
Recall, Source Select,
Standby, Sub Preset
Recall
Triggered Event
Types
A/B Source Select,
Action Sequence,
Channel Mute, GPO
Toggle, Mixer Mute,
Paging, Pause/Resume
Schedules, Power On/
Off, Preset Toggle
37
mXa-1502 • Operating Manual
ASHLY AUDIO INC. 847 Holt Road Webster, NY 14580-9103, USA
Phone: (585) 872-0010 Fax: (585) 872-0739
Toll Free (800) 828-6308 www.ashly.com
mxa r0-0320
©2019 Ashly Audio, Inc. All rights reserved worldwide.
Ashly Audio is a division of Jam Industries, Ltd. All features, specifications, and graphical representations
are subject to change or improvement without notice.
LIMITED WARRANTY (USA ONLY)
(Other countries please contact your respective
distributor or dealer.)
For units purchased in the USA, warranty service for
this unit shall be provided by ASHLY AUDIO, INC. in
accordance with the following warranty statement.
ASHLY AUDIO, INC. warrants to the owner of
this product that it will be free from defects in
workmanship and materials for a period of FIVE
years from the original-date-of-purchase, with the
exception of touch-screen displays and motorized
faders which are warrantied for THREE years from
the original-date-of-purchase.
ASHLY AUDIO INC. will without charge, repair or
replace at its discretion, any defective product
or component parts upon prepaid delivery of the
product to the ASHLY AUDIO, INC. factory service
department, accompanied with a proof of original-
date-of-purchase in the form of a valid sales receipt.
This warranty gives you specific legal rights, and you
may also have other rights, which vary from state to
state.
EXCLUSIONS: This warranty does not apply in
the event of misuse, neglect, or as a result of
unauthorized alterations or repairs made to the
product. This warranty is void if the serial number
is altered, defaced, or removed. ASHLY AUDIO,
INC. reserves the right to make changes in design,
or make additions to, or improvements upon, this
product without any obligation to install the same on
products previously manufactured.
Any implied warranties, which may arise under the
operation of state law, shall be effective only for
FIVE years (THREE years for touch-screen displays
and motorized faders) from the original-date-of-
purchase of the product. ASHLY AUDIO, INC. shall
be obligated to only correct defects in the product
itself. ASHLY AUDIO, INC. is not liable for any damage
or injury, which may result from, or be incidental to,
or a consequence of, such defects. Some states do
not allow limitations on how long an implied warranty
lasts, or the exclusion, or limitation of incidental or
consequential damages, so the above limitations or
exclusions may not apply to you.
OBTAINING WARRANTY SERVICE:
For warranty service in the United States, please
follow this procedure:
1) Return the product to ASHLY AUDIO, INC. freight
prepaid, with a written statement describing the
defect and application that the product is used
in. ASHLY AUDIO, INC. will examine the product
and perform any necessary service, including
replacement of defective parts, at no further cost to
you.
2) Ship your product to:
ASHLY AUDIO, INC.
Attention: Service Department
847 Holt Road
Webster, NY 14580-9103
39
mXa-1502 • Operating Manual