Yorkville LS720P Parts list

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Powered Series

Overview

Delivering outstanding low-frequency performance, the 1500 watt
(Peak) LS720P powered subwoofer has been designed from the ground
up to be the ideal companion for any medium sized live sound or DJ PA.
Intended for a variety of applications, the LS720P uses a single long
excursion 15-inch woofer to deliver maximum output over the entire 40
to 150 Hz range.

The LS720P has sophisticated processing circuitry that protects the
driver while maximizing the use of the available power. This processing
has been carefully optimized to complement the characteristics of the
driver and enclosure system. The fast limiter protects against clipping
and over excursion. It is located with both high and low pass filters on
either side of the limiter to guarantee that only the correct frequency
content reaches the driver. The slow (RMS) limiter is equalized to adjust
for the impedance variations of the loudspeaker system over frequency.
This ensures the maximum output of continuous bass prevalent in today's
music while ensuring protection of the driver against overheating. The
carefully tailored attack and release times ensure that the maximum level
is available from the system.

LS720P

The input section in the LS720P allows for a variety of system
configurations. There are two input sections allowing two signals to be
blended into the LS720P. This allows stereo left and right signals to be
summed into one LS720P while preserving channel seperation of the
stereo signals. Each input section has XLR male and female jacks to
allow loop thru of line level signals. In addition one input section also
has two 1/4-inch jacks that may be used for loop thru of line or speaker

Within each section all jacks are connected in parallel.

level signals

Simple controls on the LS720P include input gain (Volume), variable high
frequency cut-off and low-frequency tunable bass boost. The variable
high frequency cutoff is adjustable from 90 to 150 Hz to trim the
subwoofer's low-pass filter to match any full range cabinet. A low­frequency tunable bass boost adjustable from 45 to 90 Hz has been
included to allow subtle customizing of the bass character

Proven Class D amplifier technology allows the LS720P to operate without
a fan while preserving ample thermal margin. The low heat dissipation of
this technology eliminates the need for large, heavy heat sinks while the
lightweight neodymium-based driver further reduces overall weight.

The LS720P uses a solid 5/8th-inch 11-ply Russian birch plywood cabinet
construction with an all-metal heavy gauge perforated grille to protect
the speaker and electronic components. Integrated all metal bar handles
and metal speaker-stand pole-mount have been included.

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LS720P

LS720P Rear Panel

Features

• Integrated 1500 Watt Amplifier (Peak - 720 Watts Program)

• 15-inch

• Max SPL 135dB Peak (128dB Continuous)

• 40Hz - 150Hz with Adjustable HF Roll-Off

• 45hz - 90hz

• Paralleled XLR and 1/4-inch Selectable Line or Speaker Level Inputs

• Excursion, Peak and Thermal Woofer Protection

• Integrated All Metal Speaker Pole Mount Adaptor

• Solid 5/8-inch (15mm) Birch Plywood Construction

• Made in Canada

Woofer

ariable Boost F

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