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Placing The Subwoofer; Connecting The Subwoofer - JBL SUB 100P Owner's Manual

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PLACING THE SUBWOOFER

The performance of a subwoofer is directly related to its placement in the listening room
and its physical position relative to the other speakers in the system.
While it is true that in general our ears do not hear directional sounds at the low
frequencies where subwoofers operate, when installing a subwoofer within the limited
confines of a room, the reflections, standing waves and absorptions generated within
the room will strongly influence the performance of any subwoofer system. As a result,
the specific location of the subwoofer in the room does become important to the
amount and quality of bass that is produced.
For example, placing the subwoofer next to a wall generally will increase the amount of
bass in the room; placing it in a corner (1) generally will maximize amount of bass in the
room. However, corner placement can also increase the destructive effect of standing
waves on bass performance. This effect can vary depending on the listening position
– some listening positions may yield very good results while others may have far too
much (or too little) bass at certain frequencies.
In many rooms, placing the subwoofer along the same plane as the left and right
speakers (2) can produce the best integration between the sound of the subwoofer
and that of the left and right speakers. In some rooms, the best performance could
even result from placing the subwoofer behind the listening position (3).
We strongly recommend that you experiment with placement before choosing a final
location for your subwoofer. One way you can determine the best location for the sub-
woofer is by temporarily placing it in the listening position and playing music with strong
bass content. Move around to various locations in the room while the system is playing
(putting your ears where the subwoofer would be placed), and listen until you find the
location where the bass performance is best. Place the subwoofer in that location.

CONNECTING THE SUBWOOFER

TO A RECEIVER OR PREAMP/PROCESSOR WITH A LOW-PASS FILTERED DEDICATED SUBWOOFER OUTPUT (LFE)
Receiver/Processor
SUBWOOFER
LFE OUT
NOTE: This subwoofer / LFE cable is not included,
but can be purchased from an electronics retailer.
TO A RECEIVER OR PREAMP/PROCESSOR WITH PREAMP OUTPUTS
Receiver/Processor
PREAMP
OUTPUT
NOTE: This special subwoofer / LFE cable is not
included, but can be purchased from an electronics
retailer. An RCA Y-Adapter cable can also be used to
make this type of connection.
1.
Front Left
Speaker
Surround Left
Speaker
POWER
MODE
PHASE
ON
NORMAL
AUTO
REVERSE
SUBWOOFER
PWR
INPUT
BLUE:ON
RED:STANDBY
• Be sure to turn the Crossover on the subwoofer
fully clockwise when using this type of connection.
This type of setting bypasses the subwoofer's
internal crossover and uses your receiver or
processor's crossover.
• Check your receiver or processor menu settings and
set the subwoofer selection to 'On' or 'Yes.'
Please be sure to review the owner's manual for your
receiver or processor for more information on speaker
setup and configuration.
POWER
MODE
PHASE
ON
NORMAL
AUTO
REVERSE
SUBWOOFER
PWR
INPUT
BLUE:ON
RED:STANDBY
• We recommend setting the subwoofer's Crossover
setting to 80Hz for mid-sized speakers, higher for
smaller (satellite) speakers, and lower for larger
floorstanding speakers.
TV
Center
Speaker
3.
SUBWOOFER
INPUT
CROSSOVER
VOLUME
50Hz
150Hz
MIN
MAX
SUB 100P
POW
ER
POWER
INPUT
ON
OFF
SUBWOOFER
INPUT
CROSSOVER
VOLUME
50Hz
150Hz
MIN
MAX
SUB 100P
POW
ER
POWER
INPUT
ON
OFF
2.
Front Right
Speaker
Surround Right
Speaker
3
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