SCS 125 Sub (serv.man10) - JBL Audio User Guide / Operation Manual. Page 7

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SCS125 System
Frequency Response
35Hz – 20kHz (–6dB)
sat125
Recommended Power 
10 – 50 watts 
Impedance
8 ohms nominal 
Sensitivity
86dB @ 1 watt/1 meter
Tweeter
One 1/2"-dome, video 
shielded
Midrange
3" driver, video shielded
Dimensions (H x W x D)
4-3/8 x 3-3/16 x 3-3/4 inches
111 x 81 x 95mm
Weight
1 lb/.45 kg 
sub125
Amplifier
75 watts RMS
Bass
8" woofer, bass-reflex 
enclosure
Dimensions (H x W x D)
14-1/8 x 13 x 13 inches
359 x 330 x 330mm
Weight
27.5 lbs/12.5 kg 
Specifications
Refinements may be made on
occasion to existing products
without notice, but will always
meet or exceed original speci-
fications unless otherwise
stated.
If there is no sound from
any of the speakers, check
the following:
• Receiver/amplifier is on and
a source is playing.
• Powered subwoofer is
plugged in and is either in
the “On” or “Auto” position.
• 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.
If there is no sound coming
from one speaker, check the 
following:
• 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.
If the system plays at low
volumes but shuts off as
volume is increased, check
the following:
• 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.
• If more than one pair of
main speakers is being used,
check the minimum imped-
ance requirements of your
receiver/amplifier.
If there is low bass output,
check the following:
• Make sure the connections
to the left and right “Speaker
Inputs” have the correct 
polarity (+ and –).
• Make sure that the sub-
woofer is plugged into an
active electrical outlet.
• Powered subwoofer is
plugged in and is either in
the “On” or “Auto” position.
If there is no sound from 
the surround speakers,
check the following:
• 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 Dolby surround. If
it is not, check to see if your
receiver/amplifier has other
surround modes you may use.
Troubleshooting
SCS125 Simply Cinema OM  7/17/98 1:45 PM  Page 7
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