Toa DM-524B Instruction Manual
Text of the manual
Thank you for purchasing TOA’s products.
Please carefully follow the instructions in this manual to
ensure long, trouble-free use of your equipment.
1. SAFETY PRECAUTIONS
•�Before installation or use, be sure to carefully read all the
instructions in this section for correct and safe operation.
•�Be�sure�to�follow�all�the�precautionary�instructions�in�
this section, which contain important warnings and/
or cautions regarding safety.
•�After�reading,�keep�this�manual�handy�for�future�reference.
When Installing the Unit
•� (When�attached�to�the�ST-73A)�Avoid�installing�or�
mounting the unit in unstable locations, such as on
a rickety table or a slanted surface. Doing so may
result in the unit falling down and causing personal
injury and/or property damage.
•� Do� not� lay� the� connection� cable� where� it� can� be�
walked�on�or�tripped�over,�causing�personal�injury.
Indicates a potentially hazardous situation which,
if mishandled, could result in moderate or minor
personal injury, and/or property damage.
CAUTION
Model No.
YM-121
Type
Flexible shaft
Input Connector
XLR-3-11C�or�equivalent
Output Connector
ø21,�3-pin�plug�(BTS21P3B)
Finish
Gold, sparkling paint
Size
367�mm�(length)
Weight
295 g
Model No.
DM-524B
DM-524S
Type
Moving�coil�microphone
Polar Pattern
Cardioid pattern
Rated Impedance
600�Ω,�balanced
Rated�Sensitivity
–54.5�dB�(1�kHz,�0�dB�=�1�V/Pa)
Frequency Range
100�Hz�to�10�kHz
Output Connector
ø21,�3-pin�plug�(BTS21P3B)
Switching�circuit
Short-off�type
Finish
Microphone body, gooseneck shaft:
Gold, sparkling paint
Size
ø40�x�532�mm
(length)
ø40�x�557�mm
(length)
Weight
465�g
475�g
Accessories
ø21,�3-pin�receptacle�(BTS21R3A) ... 1
Machine�screw�M3�x�10� ..............�3
Plain�washer�(for�M3) ...................�3
Spring�washer�(for�M3)� ................�3
Nut�(for�M3)� .................................�3
Note
The� design� and� specifications� are� subject� to� change�
without�notice�for�improvement.�
4. SPECIFICATIONS
3. FEATURES
2. HANDLING PRECAUTIONS
•� When�using�the�DM-524B�or�DM-524S,�do�not�grasp�the�
head of microphone or microphone element section in
order�to�avoid�acoustic�feedback.
•� Avoid�installing�the�unit�in�humid�or�dusty�locations,�in�
locations exposed to the direct sunlight, near the heaters,
or in locations generating sooty smoke or steam as doing
otherwise may result in unit failure.
•� Take�care�not�to�drop�the�unit�onto�the�floor�nor�bump�it�
against a hard object as the unit could fail.
•� To� clean,� be� sure� to� first� disconnect� the� connection�
cable,�then�wipe�with�a�dry�cloth.�When�the�unit�gets�very�
dirty,� use�a�cloth�damped�in� a�neutral� cleanser.�Never�
use benzene, thinner, alcohol, or chemically-treated
cleaning�cloth�because�such�volatile�liquids�could�deform�
or discolor the unit.
•� (When� attached� to� the� ST-73A)� Do� not� pick� up� the�
microphone stand by the microphone, as this could lead
to failure.
[DM-524B, DM-524S]
[YM-121]
[ST-73A]
(Option)
•� The�Dynamic�Microphones�DM-524B�and�DM-524S�are�
characterized to eliminate handling noise as minimum.
•� Use� of� an� optional� ST-73A� Microphone� Stand� allows�
the�DM-524B,�DM-524S,�or�YM-121�to�be�placed�on�a�
speech desk or table in a conference room.
• Optional product
Microphone�stand:�ST-73A
XLR-3-11C or equivalent
BTS21P3B
Receptacle
BTS21R3A
ø41
3-ø3.2
Countersink
ø33
120°
Shield
26
ø25
154
557
Plug BTS21P3B
Chassis ground
ø40
[DM-524S]
*�0�dB�=�1�V
50
100
200
500
1 k
2 k
5 k
10 k
-30
-20
-10
0
10
20
(dB*)
(Hz)
5. DIMENSIONAL AND CIRCUIT DIAGRAMS
6. FREqUENCY RESPONSE (DM-524b, DM-524S)
URL:��http://www.toa.jp/
133-04-00007-00
Unit�:�mm
The symbol mark above
is not applied to YM-121.