JBL STUDIO L Series Operator'S Manual Download Page 7

English

TROUBLESHOOTING

If you used the high-level
(speaker) inputs and there 
is no sound from any of the
speakers:

• Check that the receiver/
amplifier is on and a source 
is playing.

• Check that the powered 
subwoofer is plugged into 
an active electrical outlet 
and is switched on.

• Check all wires and connec-
tions between the receiver/
amplifier and the speakers.
Make sure all wires are con-
nected. Make sure none of the
speaker wires are frayed, cut
or punctured, or touching each
other.

• Review proper operation 
of your receiver/amplifier.

If there is low (or no) bass out-
put:

• 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 and
switched 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 and bass manage-
ment adjustments on the
receiver/processor are set up
correctly.

• 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 the receiver/
amplifier is on and a source is
playing.

• Check that the powered 
subwoofer is plugged into an
active electrical outlet and is
switched on.

• Check all wires and 
connections between the
receiver/amplifier and the sub-
woofer. Make sure all wires
are connected. Make sure
none of the wires are frayed,
cut or punctured, or touching
each other.

• 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 sub-
woofer/LFE output is on.

Phase Control

The Phase Control 

deter-

mines whether the sub-
woofer’s pistonlike 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 sub-
woofer for optimum perfor-
mance 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 experi-
ment with the Phase switch in
both positions, and leave it in
the position that maximizes
bass performance.

7

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Summary of Contents for STUDIO L Series

Page 1: ...English L8400P 230 STUDIO L SERIES OWNER S GUIDE All manuals and user guides at all guides com a l l g u i d e s c o m...

Page 2: ...g instructions 17 If an outside antenna or cable system is connected to the product be sure the antenna or cable system is grounded so as to provide some protection against voltage surges and built up...

Page 3: ...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 banana type connecto...

Page 4: ...erminals on your receiver or amplifier Make sure that you have con figured your surround sound processor for Subwoofer On Also remember to configure your receiver for 5 1 6 1 or 7 1 channel operation...

Page 5: ...r s front left and right speaker terminals to the left and right terminals on the subwoofer that are marked Speaker Level In Connect the left and right terminals on the subwoofer that are marked Speak...

Page 6: ...s pleasing to you Crossover Adjustments The Crossover Frequency Con trol determines the highest frequency at which the sub woofer reproduces sounds If your main speakers can com fortably reproduce som...

Page 7: ...t the powered subwoofer is plugged into an active electrical outlet and is switched on Check all wires and connections between the receiver amplifier and the sub woofer Make sure all wires are connect...

Page 8: ...Scape motor structure Symmetrical Field Geometry SFG oversized fiberglass voice coil magnetic shorting ring Baffle Low diffraction IsoPower Enclosure Sealed Inputs Gold plated 5 way binding post speak...

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