Polk Audio Subwoofer PSW1200 - Manual (Page 22)

12
CENTER LINE IN–
Connect Center line
level preamp output here (Fig. 7).
(There is no need to plug something into
both center inputs; one would be redun-
dant.) The signal will pass through the
Variable Low Pass Crossover. Use a Y
connector if you need to have this pre-
out connected to a power amplifier or
Main In jack.
When this input senses a signal, it auto-
matically boosts the Subwoofer’s output
by 3dB. This feature is useful because
most people like a little more bass for
movies than music. When you are
listening in stereo, the Center channel
speaker is off so the boost does not
“kick in.” As soon as you put on a movie
in surround sound, the Center speaker
turns on and the 3dB bass boost
engages. If you do not want to use this
feature, use an available input instead
of one of these.
VARIABLE
LOW PASS
CROSSOVER
40Hz 120Hz
VARIABLE
PHASE
ALIGNMENT
0 ° 180 °
SWITCHABLE
HIGH PASS
CROSSOVER
(SPEAKER LEVEL)
SWITCHABLE
HIGH PASS
CROSSOVER
(LINE LEVEL) 40HZ 80HZ
40HZ
80HZ
FULL RANGE
POWER
FRONT
FRONT
LEFT
OUT
LEFT
IN
LEFT
REAR
IN
CENTER 1
IN
FRONT
RIGHT
OUT
RIGHT
FRONT
IN
RIGHT
REAR
IN
CENTER 2
IN
LFE/SUBWOOFER IN
FRONT SPEAKER LEVEL OUT
L R
L R
L R
FRONT SPEAKER LEVEL IN
REAR
PRE-OUT CENTER
PRE-OUT SUBWOOFER
OUT
( LFE
Low pass
filtered
only )
ON OFF AUTO
+
–
+
–
SURROUND RECEIVER OR PREAMP/PROCESSOR FIGURE 7.