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5
www.jbl.com
English
oPeratInG tHe suBwooFer
TURNING THE SUBWOOFER ON AND OFF
Set the subwoofer’s Power switch to the “On” position. The subwoofer
will automatically turn itself on when it receives an audio signal, and it
will go into Standby mode after it has received no audio signal for 20
minutes. The subwoofer’s On/Standby LED will glow green when the
subwoofer is on and will glow red when the subwoofer is in Standby.
If you will not be using the subwoofer for an extended period – for
instance, if you’re going on vacation – set the Power switch to the “Off”
position.
SUBWOOFER ADJUSTMENTS: CROSSOVER CONTROL
NOTE: The Crossover control functions only
when you are using the Line In connectors and
the Input Mode switch is set to “Normal.” Setting
the Input Mode switch to “LFE” bypasses the
subwoofer’s built-in crossover and the Crossover
control.
The Crossover control adjusts the subwoofer’s built-
in crossover between 50Hz and 150Hz. The higher
you set the Crossover control, the higher in frequency the subwoofer
will operate and the more its bass will “overlap” that of the satellite
speakers. This adjustment helps achieve a smooth transition of bass
frequencies between the subwoofer and the satellites for a variety of
different rooms and subwoofer locations.
To set the Crossover control, listen for the smoothness of the bass. If
the bass seems too strong at certain frequencies, try a lower Crossover
control setting. If the bass seems too weak at certain frequencies, try a
higher Crossover control setting.
SUBWOOFER ADJUSTMENTS: VOLUME
Use the Level control to set the subwoofer’s volume.
Turn the knob clockwise to increase the subwoofer’s
volume; turn the knob counterclockwise to decrease
the volume. Once you have balanced the subwoofer’s
volume with that of the other speakers in your system,
you shouldn’t have to change it.
Notes on Setting Subwoofer Volume:
• Sometimes the ideal subwoofer volume setting for music is too loud
for films, while the ideal setting for films is too quiet for music. When
setting the subwoofer volume, listen to both music and films with
strong bass content and find a “middle ground” volume level that
works for both.
• I f your subwoofer always seems too loud or too quiet, you may want
to place it in a different location. Placing the subwoofer in a corner
will tend to increase its bass output, while placing it away from any
walls or corners will tend to lessen its bass output.
SUBWOOFER ADJUSTMENTS: PHASE
The Phase switch determines whether the subwoofer
driver’s piston-like action moves in and out in phase with
the system’s other speakers. If the subwoofer were to play
out of phase with the other speakers, the sound waves
from the satellites could partially cancel out the waves
from the subwoofer, reducing bass performance and
sonic impact. This phenomenon depends in part on the
placement of all the speakers relative to each other in the room.
Although in most cases you should leave the Phase switch in the “0”
position, there is no absolutely correct setting for the Phase switch.
When the subwoofer is properly in phase with the rest of the system’s
speakers, the sound will be clearer and have maximum impact, and
percussive sounds like drums, piano and plucked strings will sound
more lifelike. The best way to set the Phase switch is to listen to music
that you know well and to set the switch in the position that gives
drums and other percussive sounds maximum impact.
sPecIFIcatIons
Low-frequency
transducer:
12" (300mm) PolyPlas™ cone,
cast basket
Enclosure type: Sealed (forward-firing)
Amplifier power: 400W RMS; 600W peak
Frequency response: 22Hz – 150Hz
Audio controls: Volume level, crossover frequency, phase
Connections: RCA line-level and LFE inputs
Power requirement: 120V, 60Hz (US); 220V – 230V, 50Hz/60Hz
(EU)
Power consumption: <0.55W (120V & 230V) standby;
700W – 7.2A (120V),
700W – 3.6A (230V) maximum
Dimensions (W x H x D): 15-21/32" x 19-17/32" x 15-15/16"
(398mm x 496mm x 405mm)
Weight: 63 lb (29kg)
HARMAN International Industries, Incorporated
8500 Balboa Boulevard, Northridge, CA 91329 USA
© 2012 HARMAN International Industries, Incorporated. All rights reserved.
JBL is a trademark of HARMAN International Industries, Incorporated, registered in the United States
and/or other countries. PolyPlas is a trademark of HARMAN International Industries, Incorporated.
Features, specifications and appearance are subject to change without notice.
Part #: JBLP4685 Rev: A