PB 12 (serv.man14) - JBL Audio User Guide / Operation Manual. Page 3

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

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.

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.

For LFE use L or R

Use this installation method
for Dolby Digital, DTS or other
digital surround processors: 

IMPORTANT: Make sure that
the LFE toggle switch on the
subwoofer is in the “LFE”
position. Use the line-level
input jacks for the Low-
Frequency Effects channel.
Connect these jacks to the
LFE output or subwoofer
output on your receiver or
amplifier. 

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.

Make sure that you have
configured your surround-
sound processor for
“Subwoofer On” or “LFE On.”
The front left, front right,

center and rear speakers
should be set to “Small” or
“Large” depending on their
size and frequency response.
Consult your receiver’s or
processor’s owner’s manual.

For LFE use L or R