Legacy Broadway Owner's Manual
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2. Unpacking/Speaker Placement/
Connections
3. Designer’s Note
4. The Cabinetry/Our Commitment
5. Specifications
6. Hook Up Cables
7. The Amplifier
Thank you for selecting a Legacy Loudspeaker System. These
hand-crafted instruments will provide you with many years of
listening enjoyment. Please take a few moments to read this brief
manual to insure maximum benefit from your speaker system.
Limited Ten Year Warranty
Legacy Audio, Inc. extends to the original owner coverage of
defects in materials and workmanship for a period of ten years
from the date of purchase.
This warranty does not include a) damage in shipment, b)
damage caused by accidental or intentional misuse or abuse, c)
units not registered with Legacy Audio, d) damage resulting from
unauthorized modifications or repairs. Liability is limited to the
repair or replacement, at our option, of any defective component
and shall not include property or consequential damages which
may result from the failure of this product.
If this product should ever require servicing, simply call
1-800-283-4644 for immediate assistance. Every Legacy speaker
system is completely modular and requires little more than a
Phillips screw driver and a soldering iron to service.
Customer Record
Model No. ____________________________
Serial No. _____________________________
Date of Purchase ____ / ____ / ____
Owner _______________________________
Street Address _________________________
City ______________ State _____ Zip _____
1
Your new speaker system has been very carefully packaged to
insure that it travels to you safely. Each speaker is protected by a
double-wall outer carton with heavy V-board corner protectors.
Molded foam end caps are used to protect the elegant cabinetry,
and a plastic liner is provided as waterproofing.
Please save this packing for future transportation. If cartons
become damaged or misplaced, new ones can be purchased from
Legacy Audio.
Speaker Placement
The Broadway should be placed upon a substantial stand or
on top of your television set for the best results. It can also hang
above projector screens and plasma TV’s via a wall/soffit mount.
This speaker, like all Legacy speakers, is designed for broad lateral
coverage.
Connections
At the rear of your Broadway you will find a terminal plate
housing a single pair of five-way binding posts.
Connect the output of the center channel amplifier to the
loudspeaker via the gold five-way binding posts provided. Dual
banana plugs or gold spade lugs are recommended means of
termination.
Be sure that you observe polarity when making the
connections. The positive (+) terminal (red) of the amplifier
should be connected to the positive terminal of the loudspeaker.
The negative (-) terminal (black) of the amplifier should be
connected to the negative terminal of the loudspeaker.
2
Designer’s Note from Bill Dudleston
More than 70% of midrange information and virtually all
speech is steered to center in film soundtracks.The center
channel speaker is unquestionably the most important speaker in
a multi-channel setup.
This exceptional transducer represents the state of the art in
home theater performance. Designed to integrate seamlessly with
the Legacy Empire speaker system, the Broadway center speaker
can also upgrade other high quality systems.
How many times have you missed a critical line of film
dialogue over muffled or tinny sounding TV speakers? Have you
ever found yourself cranking up the volume to an aggravating
level just to avoid missing the plot?
High school geometry taught us that a location in free space
can be specified by the coordinates of a single point and that
two such points can describe a line.Adding a third point allows
us to define an entire plane, while adding fourth and fifth points
opens the possibilities to multiple planes.
Likewise, the localization advantages of discrete 5.1
multichannel audio become obvious.Adding a center channel
speaker to a system will result in improved clarity, stable dialogue
and a natural sense of depth. Central images retain their position
even with extreme listener positions.
Broadway utilizes our exclusive 5.25”KEVLITE-Ti® midrange
and NEOdome tweeter to project the center channel information
with sparkling clarity.
Dual 7”woofers combine to deliver midbass with solid impact.
Broadway’s special distribution pattern delivers sound
uniformally to every seat in the house. And because it’s only 4.5”
thick, the magnetically-shielded Broadway center speaker can be
placed on top of your existing television, or conveniently
wall/soffit mounted.
3
Beneath the surface of Broadway’s elegant exterior lies rigid
MDF construction. Interlocking joinery maximizes the strength of
the cabinet parts. Polyester fiberfill is selected for internal
damping.A sharp rap on the enclosure will leave you with little
more than bruised knuckles.
Each cabinet is impeccably finished on all exposed surfaces
with select veneers.The exquisite finish is hand-rubbed several
times to assure a patina at home with the most elegant decor.
Our Commitment
A great deal of forethought, love and satisfaction is instilled in
each piece of Legacy workmanship.We take pride in getting to
know many of our customers on a first name basis.
Your purchase of this product is backed by the renowned
“Legacy Satisfaction Guarantee”. We continue to stand behind it
with a solid ten year warranty, more than twice the industry
standard.
4
System Type: 4-driver, 3 way
Tweeter: 1”NEOdome
Midrange: 5.25”KEVLITE-Ti
Woofer: (2) 7”Polypropylene
Dimensions: 10” W x 23” H x 4.5” D
Crossover Frequencies (Hz): 400, 3k
Frequency Response: 100 Hz - 22 kHz +/-2 dB
Recommended Amplification: 10-300 watts
Sensitivity: 90 dB @ 2.83V/1m
Impedance: 4 ohms
Weight: 30 lbs
5
The ideal conductor would have negligible resistance,
inductance and capacitance. The table below shows how a few
actual speaker cables measure up.
Cable
Ωs/ft
pF/ft
µH/ft
12 ga.
0.0033
24
0.21
14 ga.
0.0048
17
0.13
16 ga.
0.0079
16
0.18
18 ga.
0.0128
28
0.21
Capacitance is considered insignificant in each cable because
its effect is well out of the audio bandwidth; inductance can be
decreased (at the expense of increased capacitance) by keeping
the conductor pair closely spaced.
How long would a cable have to be before inductance effects
would impinge on the audio spectrum? Approximately 300 feet
of 12 gauge would be required to establish a corner frequency of
20 kHz with an 8 Ohm loudspeaker. As you see, inductance is
not a problem for most of us.
What about phase shift due to frequency dependent travel
times down the speaker cable? Measurements show that 100 Hz
waves will be delayed about 20 billionths of a second behind 10
kHz waves when traveling to the end of a 10 foot speaker cable.
Since the cilia of the ear requires 25,000 times longer than this
just to transmit phase information, phase shifting is obviously not
the primary concern when considering speaker cables.
What about resistance? Finally we are getting somewhere.
Resistance is the controlling factor of the amplifier/loudspeaker
interface.
Excessive resistance can cause major shifts of speaker
crossover frequencies. The lower the impedance of the
loudspeaker, the greater the effects of series resistance. A run of
20 feet of 18 gauge can cause up to 10% deviations of crossover
center frequencies. That same 20 feet can undamp your damping
factor and reduce your systems’ output by one-half decibel.
The best way to approximate the ideal would be to keep
loudspeaker leads as short as is practical.
Our recommendation is the Legacy Transmission Line Cable.
Transmission Line is available in ready made 10 ft. runs or custom
lengths are available as well. Please call the factory at
1-800-283-4644.
6
Ideally the loudspeaker would be among the first
components selected when assembling a playback system. This
would allow the user to choose an amplifier capable of delivering
adequate amounts of current into the frequency dependent load
presented by the loudspeaker. However, when upgrading a
system, audiophiles may find themselves matching their new
loudspeakers to their existing amplification. For this reason,
extensive measures have been taken to ensure that each Legacy
speaker system represents a smooth, non-reactive load to virtually
any amplifier.
Often there is much confusion regarding amplification and
loudness levels. It should be understood that the role of the
amplifier goes beyond that of driving loudspeakers to a given
sound pressure level. The amplifier should be able to CONTROL
the loudspeakers across the entire music spectrum. This means
that parameters such as damping factor (values greater than 60
are acceptable) and dynamic headroom should not be overlooked
when comparing amplifiers.
How much power will your new speakers need? That
ultimately depends on your listening environment and musical
tastes. As little as five watts per channel should drive them to a
level satisfactory for background music. A typical 45 watt per
channel receiver may fill a room with the compressed mid-band
energy of “heavy metal,”but seem to lack weight or control with
classical recordings. Some audiophiles feel that 200 watts per
channel is the bare minimum to avoid audible clipping distortion
when reproducing music at “live”playback levels. Your Legacy
speakers are designed to take advantage of “high-powered”
amplifiers, so don’t be afraid to put them through their paces.
How much is too much power? Rarely is a drive unit
damaged by large doses of music power. More often than not the
villain is amplifier clipping distortion. Even through decades of
refinement, loudspeakers are still notoriously inefficient
transducers, requiring huge amounts of power to recreate the
impact of the live performance. Typically less than 1% of
electrical power is converted into acoustic output. For example,
an omni-directional transducer with an anechoic sensitivity of 90
dB @ 1w/1m has a full space efficiency of only 0.63%. When an
amplifier is unable to fulfill your loudspeakers demands, a
damaging harmonic spike may be leaked to the high frequency
drivers.
Another important point regarding loudness is that the dB
scale is a logarithmic one. This means that a 150 Watt amplifier
will potentially sound only twice as loud as a 15 Watt amplifier.
If all of this discussion of power and loudness seems a bit
abstract, consider the example to the left.
7
The average acoustical power
developed by a person speaking in
a conversational tone corresponds
to a mere 0.00001 Watts. The
power that would be developed by
the entire population of the city of
New York speaking at once would
barely illuminate a single 100
Watt light bulb.