Read JBL PSW-D112 (serv.man4) Service Manual online
3a) If your receiver/amplifier has a single
(mono) subwoofer output or LFE output,
connect the output using a “Y”-connector
(not included) to both Left or Right line-level
inputs on the subwoofer. Plug the single
male end of the “Y” connector into the
receiver/amplifier, and connect the 2
interconnect cables to the Left and Right
line-level inputs on the subwoofer.
3b) If you will be connecting the
PSW-D112/DPS-12 to a receiver/processor
containing a Dolby Digital or D.T.S. surround
technology:
1. For the Rev0 version, connect the
subwoofer or LFE output from your
receiver/processor to the Center.
line-level input as shown in Figure 3b.
2. For the Rev1 version, (with no center
channel input jack), connect the
subwoofer or LFE output from your
receiver/processor to EITHER Left or
Right line-level input jack with a single
RCA cable.
3. Set the “Low-Pass” control to the full
clockwise 180Hz setting.
The connection labeled “Direct” (on Rev0
version of the subwoofer) is an output that
allows you to connect several subwoofers, if
your system contains more than one
subwoofer.
4) If your receiver/amplifier has preamp
output jacks and main input jacks for the left
and right channels or you have a separate
pre-amp/ processor and power amplifier.
See Figure 4.
This method of hookup can offer the highest
level of performance for your complete
loudspeaker system. The PSW-D112/
DPS-12 incorporates a variable high-pass
crossover in addition to a variable low-pass
crossover. When hooked up as shown
above, the subwoofer will limit the
low-frequency information that is returned to
your receiver/amplifier. Your receiver/
amplifier does not need to waste valuable
power reproducing the low frequencies. In
addition, since no low-frequency information
is being sent to your main loudspeakers, they
are able to reproduce mid and high
frequencies with greater clarity
9
Amplifier/Subwoofer
PSW-D112/DPS-12
180o 0o
Phase
D
i
r
e
c
t
L
I
N
E
I
N
L
I
N
E
O
U
T
Direct Out
L
C
R
L
C
R
L
SPKR In
SPKR Out
Figure 3a
SUBWOOFER
OUTput/LFE
RECEIVER/PREAMPLIFIER
Figure 3b
SUBWOOFER
OUTPUT
RECEIVER/PREAMPLIFIER
180o 0o
Phase
D
i
r
e
c
t
L
I
N
E
I
N
L
I
N
E
O
U
T
Direct Out
L
C
R
L
C
R
L
SPKR In
SPKR Out
60
90
150
180
120
60
90
150
180
120
180o 0o
Phase
Low
Pass
High
Pass
D
i
r
e
c
t
L
I
N
E
I
N
L
I
N
E
O
U
T
Direct Out
L
C
R
L
C
R
L
C
R
SPKR In
SPKR Out
Figure 4
RIGHT
LOUDSPEAKER
LEFT
LOUDSPEAKER
MAIN SPEAKER OUTPUT
LEFT
RIGHT
RIGHT
CENTER
LEFT
RECEIVER/AMPLIFIER
PRE
OUT
MAIN
IN
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