DOWNLOAD JBL SCS 10 Service Manual ↓ Size: 302.7 KB | Pages: 10 in PDF or view online for FREE

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 corre-sponding 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 outputs on your
receiver or amplifier to the line-
level inputs on the subwoofer. 

IMPORTANT: Do not use the
LFE input on the subwoofer
with Dolby Pro Logic
processors. 
Note: If your receiver or
amplifier only has one sub-
woofer output jack, then you
will need to use a Y-connector
(not included). Plug the male
end of the Y-connector into
your receiver or amplifier’s
subwoofer output jack, and
connect each of the two female
ends to separate RCA-type
patch cords. Finally, plug the
RCA-type patch cords into the
line-level inputs on the
subwoofer.
Connect each speaker to the
corresponding speaker
terminals on your receiver or
amplifier.

Connect this jack to the LFE
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 front left,
front right, center and rear
speakers should all be set to
“Small.”

Note:
When using the LFE input, the
subwoofer's Crossover control
is NOT active, because this
function is controlled by your
surround processor.
When using the LFE input, set
the subwoofer's Volume control
to "Max" and calibrate the
subwoofer level along with the
other speakers according to
the set-up instructions in the
owner's manual for your
surround receiver/amplifier.

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.

Press the Master Power
Switch (marked Power 

¡) to

the ON position to use the
subwoofer. 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. 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.

+

°                 180°

Volume can be adjusted using
the Subwoofer Volume Control
£, as shown.

The crossover filter between
the subwoofer and satellites
can be adjusted using the
Crossover Control 

¢. The

optimum setting for the 
SCS 10 and SCS 20 systems is
with the Crossover Control 

¢

set to the "Max" position.

™

¢

¡

£

The Phase Control 

™ determines

whether the subwoofer’s piston-
like action moves in and out in
phase with the main speakers or
opposite the main speakers. This
is adjusted by pressing the button
to the 0°, or 180° position. The 0°
position of the phase button plays
the bass signal in phase with the
main speakers. The 180° position
plays the bass signal 180°, or out
of phase with the main speakers.
Proper phase adjustment
depends on several variables
such as subwoofer placement
and listener position. Adjust the
phase switch to optimize bass
output at the listening position.
Every system, room and listener
is different. There are no right or
wrong settings. This switch offers
the added flexibility to adjust your
subwoofer for optimum
performance for your specific
listening conditions without
having to move your speakers. If
at some time in the future you
happen to rearrange your
listening room, and move your
speakers, you should experiment
with the phase switch in both
positions, and leave it in the
position that optimizes bass
performance for your taste.

If there is no sound from any of
the speakers:
• Check that receiver/amplifier

is on and a source is playing.

• Check that the powered

subwoofer is plugged in, its
Power switch 

¡ is switched

on to the “ON” position.

• Check all wires and connec-

tions between receiver/
amplifier and speakers. Make
sure all wires are connected.
Make sure none of the
speaker wires are frayed, cut
or punctured.

• Review proper operation of

your receiver/amplifier.

If there is no sound coming
from one speaker:
• Check the “Balance” control

on your receiver/amplifier.

• Check all wires and con-

nections between receiver/
amplifier and speakers. Make
sure all wires are connected.
Make sure none of the
speaker wires are frayed, cut
or punctured.

• In Dolby Digital or DTS

®

modes, make sure that the
receiver/processor is
configured so that the
speaker in question is
enabled.

If there is no sound from the
center speaker:
• Check all wires and connec-

tions between receiver/
amplifier and speaker. Make
sure all wires are connected.
Make sure none of the
speaker wires are frayed, cut
or punctured.

• If your receiver/processor is

set in Dolby Pro Logic mode,
make sure the center speaker
is not in phantom mode.

• If your receiver/processor 

is set in Dolby Digital or DTS

®

mode, make sure the
receiver/processor is con-
figured so that the center
speaker is enabled.

If the system plays at low
volumes but shuts off as
volume is increased:
• Check all wires and connecti-

ons between receiver/
amplifier and speakers. Make
sure all wires are connected.
Make sure none of the
speaker wires are frayed, cut
or punctured.

• If more than one pair of main

speakers is being used, check
the minimum impedance
requirements of your
receiver/amplifier.

If there is low (or no) bass 
output:
• Make sure the connections to

the left and right “Speaker
Inputs” have the correct
polarity (+ and –).

• Make sure the subwoofer is

plugged into an active
electrical outlet.

• Make sure the powered

subwoofer is plugged in and
switched on.

• In Dolby Digital or DTS

®

modes, make sure your
receiver/processor is
configured so that the
subwoofer and LFE output are
enabled.

If there is no sound from the
surround speakers:
• Check all wires and con-

nections between receiver/
amplifier and speakers. Make
sure all wires are connected.
Make sure none of the
speaker wires are frayed, cut
or punctured.

• Review proper operation of

your receiver/amplifier and its
surround-sound features.

• Make sure the movie or TV

show you are watching is
recorded in a surround-sound
mode. If it is not, check to see
if your receiver/amplifier has
other surround modes you
may use.

• In Dolby Digital or DTS

®

modes, make sure your
receiver/processor is
configured so that the
surround speakers are
enabled.

• Review the operation of your

DVD player and the jacket of
your DVD to make sure that
the DVD features the desired
Dolby Digital or DTS

®

mode,

and that you have properly
selected that mode using both
the DVD player’s menu and
the DVD disc’s menu.