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Using the Controls
Power
The power switch has two
positions: off and auto. The auto
position is the default setting. This
keeps the amplifier in a standby
mode. Using sophisticated signal
sensing circuitry, the amplifier is
instantaneously activated when a sig-
nal is detected at either of the inputs.
If no signal is detected after several
minutes, the amplifier switches back
to the standby mode. The off position
overrides this circuit, turning the subwoofer off manually. The power LED indicates the subwoofer's status.
Level
Since your subwoofer is designed to work in conjunction with other speakers, we have provided a level
control will allow you to balance the output of your unit with the rest of your system. Once set, the level
control should not require further adjustment. Begin with the level control at the minimum position. Slowly
increase the level until the subwoofer's output is equal to that of your other speakers.
Note: Output level is relative and can be different from location to location. Always return to the normal listening
location to evaluate any setting changes.
Connecting the SW 50
General Information
The diagrams on the following pages show three of the most common types of subwoofer connections. This
information will guide you through the connection process.
First, a few words regarding the functioning of your powered subwoofer: All signals into your powered
subwoofer will first pass through the crossover. The portion of the signal below the current crossover fre-
quency setting will be reproduced by the subwoofer. The unprocessed signal will be passed to the hi level
outputs. If you have a choice of connection options, remember that it may be easier to run long distances
with speaker wire than with line connectors.
Hi Level In
These inputs are designed to accept an amplified signal from the speaker outputs of a receiver, power
amp or other device not equipped with line level outputs.
Hi Level Out
The original amplified signal from your source is present at these outputs for connection to the existing
left and right speakers.
Line In
These RCA jacks are designed to accept a line level signal from a receiver, pre-amp, surround sound
decoder or similar device. When using a single line level output from another unit, a Y connector should be
used to send the signal to both the left and right inputs. (Using the tape loop of a receiver or preamp is not
recommended. Tape jacks typically send a constant level, regardless of the volume setting, unlike preamp
outputs. This will affect the balance between the subwoofer and the rest of the system.)
Line
In
Hi Level
In
Hi Level
Out
120 VAC
80 Watts
60 Hz
Right
Left
Off Auto
+
-
-
+
Power
L
R
Level
F
U
S
E
1A 250V
RISK OF FIRE
REPLACE FUSE
AS MARKED
CAUTION
RISK OF FIRE OR ELECTRIC SHOCK
DO NOT OPEN
AVIS: RISQUE DE CHOC ELECTRIQUE.
NE PAS OUVRIR.
Part #30007
Subwoofer Amplifier