Product Features
Power Selection Switch, Power Button, and Power Indicator Light
The Power Selection Switch is found on the back of the amplifier. It includes two settings that will affect
how the amplifier is turned on and off.
• AUTO
- the amplifier will turn ON when an input signal is sensed by the source that is selected
and will go into STAND-BY/OFF after several minutes of no signal. The Power Button should be
in the IN position. If the Power Button is in the OUT position, the amplifier will not turn on.
• ON
- allows the user to manually turn the amplifier ON and OFF by pushing the power button IN
or OUT on the front panel.
The Power Indicator Light will be amber when the amplifier is in stand-by mode and bright blue when
the amplifier is active. The Power Indicator Light will not be lit when the Power Button is in the OUT
position.
Amplifier Protection Light
The Amplifier Protection Light will only light when a problem exists that triggers the built-in protection
mode. The amplifier will shut down until the problem is resolved.
Phase Switch
The phase switch allows setting the output to be out of phase with another subwoofer (if used) to mini-
mize “dead spots” in the room caused by speaker wave interaction and cancellation.
LEFT
INPUT
INPUT
OUTPUT
OUTPUT
RIGHT
SPEAKER
Subwoofer Digital Amplifier SDA-120
Min
Max
120Hz
80Hz
40Hz
CROSSOVER
LEVEL
POWER
ON
AUTO
LFE IN
LFE IN
XO-BYPASSED
XO-ACTIVE
LEFT RIGHT
4
Ω
AC 120V~60Hz
Power Consumption: 150W
To Speakers
To Amplifier/Receiver
4
Level Knob
LFE Inputs
(XO-Active/XO-Bypassed)
5-way Binding Posts
Snap-In Speaker Cable Connec
-
tions (Connectors Included)
Power Cord
Power Selection Switch
Amplifier Protection Light
Phase Switch
Crossover Control Knob
Power Indicator Light
Power Button
SDA-120 Features
