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7

T R O U B L E S H O O T I N G

If you used the High Level
(speaker) inputs 

and there 

is no sound from any of the
speakers:

• Check that receiver/amplifier
is on and a source is playing.
• Check that powered
subwoofer is plugged into 
an active electrical outlet 
and is switched on 

£‚

.

• Check all wires and
connections between
receiver/amplifier and
speakers. Make sure all wires
are connected. Make sure
none of the speaker wires 
are frayed, cut or punctured.
Make sure no wires are
touching other wires or
terminals and creating a 
short circuit.
• Review proper operation 
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 that the
subwoofer is plugged into an
active electrical outlet and
that both power switches 
are on 

£‚

.

• Adjust the Crossover point

¢

.

• Flip the Phase Control
switch 

¡

to the opposite

position.
• If you are using a Dolby
Digital/DTS receiver or 
processor, make sure that the
subwoofer adjustments on 
the receiver/processor are 
set up correctly. When using
the S120P

II

’s Speaker Level

inputs 

, you should set your

receiver to configure the
main left and right speakers
as “LARGE”.
• Slowly turn the Level 
Control 

clockwise until

you begin to hear the desired
amount of bass.

If you used the Line Level
inputs 

and there is no

sound from the subwoofer:

• Check that receiver/amplifier
is on and a source is playing.
• Check that powered
subwoofer is plugged into an
active electrical outlet and
that both Power switches 
are on 

£‚

.

• Check all wires and con-
nections between receiver/
amplifier and subwoofer.
Make sure all wires are
connected. Make sure none
of the wires are frayed, cut 
or punctured.
• Review proper operation of
your receiver/amplifier.
• Slowly turn the Level 
Control 

clockwise until

you begin to hear the desired
amount of bass.
• Make sure that you have
configured your receiver/
processor so that the
subwoofer/LFE output is on.

Phase Control

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.
There is no correct or
incorrect setting. Proper
phase adjustment depends on
several variables such as

subwoofer placement and
listener position. Adjust the
Phase switch 

¡

to maximize

bass output at the listening
position.

Remember, 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 maximizes bass
performance.

Summary of Contents for Studio S120PII

Page 1: ...ker level outputs Frequency Response 22Hz Low pass crossover setting Dimensions H x W x D 17 3 16 with feet without spikes x 16 3 16 x 18 19 with grille 437mm with feet without spikes x 411mm x 457mm 483mm with grille Weight 56 lb 25 5kg JBL Consumer Products 250 Crossways Park Drive Woodbury NY 11797 8500 Balboa Boulevard Northridge CA 91329 800 336 4JBL 4525 USA only www jbl com 2001 JBL Incorpo...

Page 2: ...your home car or office you will once again choose JBL Please take a moment to complete the enclosed profile card It enables us to keep you posted on our latest advancements and helps us to better understand our customers and build products that meet their needs and expectations JBL Consumer Products D E S I G N G O A L Bring the thrill of live performance and movie sound to the home environment b...

Page 3: ...16 Lightning For added protection for this product during a lightning storm or when it is left unattended and unused for long periods of time unplug it from the wall outlet and disconnect the antenna or cable system This will prevent damage to the product due to lightning and power line surges 17 Power Lines An outside antenna system should not be located in the vicinity of overhead power lines or...

Page 4: ...matches your system and follow the corresponding hookup instructions To use the binding post speaker terminals ª with bare wire unscrew the collar until the pass through hole in the center post is visible under the collar Insert the bare end of the wire through the hole in the post then screw the collar back down until the connection is tight The holes in the center of the collars are intended for...

Page 5: ...k 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...

Page 6: ... 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 HIGH LEVEL IN HIGH LEVEL OUT L R L R IN OUT R L CROSSOVER FREQUENCY BASSQ See owner s manual before use LINE LEVEL IN For ...

Page 7: ... on several variables such as room size subwoofer placement type of main speakers and listener position Adjust the subwoofer level so that the volume of the bass information is pleasing to you When using a Dolby Digital DTS receiver adjust the LFE level on the receiver to 0dB and then adjust the subwoofer Level Control for the desired amount of bass Crossover Adjustments The Crossover Frequency Co...

Page 8: ...e Level inputs and there is no sound from the subwoofer Check that receiver amplifier is on and a source is playing Check that powered subwoofer is plugged into an active electrical outlet and that both Power switches are on Check all wires and con nections between receiver amplifier and subwoofer Make sure all wires are connected Make sure none of the wires are frayed cut or punctured Review prop...

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