Dolby Pro Logic Line Level - JBL PowerBass Series PB10 Preliminary Service Manual

Dolby Pro Logic (Non-Digital) – Line Level
Use this installation method
for Dolby Pro Logic appli-
cations (not Dolby Digital, DTS
or other digital processing),
where the receiver/processor
is equipped with a subwoofer
output or a volume-controlled
preamp (line-) level output:
Use RCA-type patch cords
to connect the line-level
subwoofer outputs on your
receiver or amplifier to the
line-level inputs on the
subwoofer. IMPORTANT:
Make sure that the LFE toggle
switch on the subwoofer is in
the "Normal" position. Do not
RECEIVER
Subwoofer
Out
L R
use the "LFE" position with
Dolby Pro Logic-only
processors.
Note: If your receiver or
amplifier only has one
subwoofer output jack,
then you may connect the
subwoofer output on your
receiver/preamplifier to either
the left or right line-level input
on the subwoofer. It makes no
difference which jack you
choose.
Connect each speaker to the
corresponding speaker
terminals on your receiver or
amplifier.
LEVEL
Min
LFE
PHASE
0º
CROSSOVER
FREQUENCY
50Hz
L
LINE LEVEL IN
For LFE use L or R
LEVEL
+ –
LEVEL
Make sure your receiver or
processor is configured cor-
rectly: Make sure that the sub-
woofer is configured as "On."
Note for advanced users: If
your receiver/processor has
a built-in low-pass crossover
filter for the subwoofer output,
then the LFE switch should be
set to the "LFE" position to
bypass the subwoofer's
internal crossover.
Max
NORMAL
180º
150Hz
R
L
HIGH
IN
R
L
HIGH
OUT
R
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