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Separate and strip the ends of
the speaker wire as shown.
Speakers and electronics
terminals have corresponding
(+) and (–) terminals. Most
manufacturers of speakers and
electronics, including JBL, use
red to denote the (+) terminal
and black for the (–) terminal.
The (+) lead of the speaker wire
is noted with a stripe. It is
important to connect all
speakers identically: (+) on the
speaker to (+) on the amplifier
and (–) on the speaker to (–) on
the amplifier. Wiring “out of

phase” results in thin sound,
weak bass and a poor stereo
image.
With the advent of multichannel
surround-sound systems,
connecting all of the speakers
in your system with the correct
polarity remains equally
important in order to preserve
the proper ambience and
directionality of the program
material.

Use this installation method for
Dolby Pro Logic applications
(not Dolby Digital, DTS

®

or

other digital processing), where
the receiver/processor does
not have a subwoofer output, or
a volume-controlled preamp
(line-) level output:
Connect your receiver or
amplifier’s front left and right
speaker terminals to the left
and right terminals on the
subwoofer that are marked
“High Level In.” Connect the
left and right terminals on the
subwoofer that are marked
“High Level Out” to the cor-
responding terminals on the
back of your front left and right
speakers.
Connect your receiver or
amplifier’s center, left and right
surround-speaker terminals to
the corresponding terminals on
the back of your center, left and
right surround speakers.

+      –

+      –

+      –

+      –

+      –

+        –

+      –

+      –

+      –

+      –

+      –

+      –

Use this installation method for
Dolby Pro Logic applications
(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 output on your
receiver or to amplifier either

the left or right line-level input
on the subwoofer. IMPORTANT:
Do not use the LFE input on the
subwoofer with Dolby Pro Logic
processors. Note: If your
receiver or amplifier has two
subwoofer output jacks then
you can plug the RCA-type
patch cords into both left and
right line-level inputs on the
subwoofer.
Connect each speaker to the
corresponding speaker
terminals on your receiver or
amplifier.

output or subwoofer output 
on your receiver or amplifier.
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.”
The surround receiver should be
configured for 6.1-channel
operation (if available) and the
front left, front right, center and

rear speakers should all be set
to “Small.”
If your receiver allows you to
set the crossover frequency
between the subwoofer and the
main speakers, select either
120Hz or 150Hz, or select the
setting that is the closest
frequency below these.

Use this installation method for
Dolby Digital, DTS

®

or other

digital surround processors: 
Use the line-level input jack
marked “LFE” for the Low-
Frequency Effects channel.
Connect this jack to the LFE

Move the Master Power switch
(marked “Power” ¡) to the “

•

”

(On) position to use the
subwoofer. The SCS 140
subwoofer will automatically
turn itself on or go into standby
(sleep) mode when left in the
standby mode (“Auto/On”
switch ™ in the “Auto”
position). When your receiver
or amplifier is off, or is not

sending program material to the
subwoofer, the subwoofer will
be in standby mode. When the
subwoofer senses an audio
signal, it will automatically turn
itself on. If the subwoofer does 
not sense a signal after
approximately twenty minutes,
it will automatically go into
standby mode.

When the “Auto/On” switch ™
is switched to the “On”
position, the subwoofer will
remain on, whether or not
program material is playing.
If you will be away from home
for an extended period of time,
or if the subwoofer will not be
used, switch the Master Power
switch ¡ to the Off position.

200 Watts

£

¡

™

IMPORTANT: CONNECT STRIPED WIRE  TO RED (    ) SPEAKER TERMINAL.

GREEN: ON
RED: STANDBY

+

Volume can be adjusted using
the Subwoofer Level Control £
(above), as shown below.