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Specifications; Phase Switch; Subwoofer Level Knob - JBL SB300 Quick Start Manual

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suBWOOFer LeVeL kNOB

Use the subwoofer's Level knob to balance the bass with the rest of
the sound. Play music or movies that you are familiar with, and adjust
the subwoofer's Level knob so the bass sounds balanced on both
music and films. Listen to several different music recordings and film
soundtracks that contain strong bass passages, and find a setting for
the Level knob that doesn't over-emphasize the bass or make it sound
weak.
Level
MIN
Once you find a setting for the subwoofer's Level knob that balances
the bass with the rest of the sound, you shouldn't have to change it.
Cutoff
suBWOOFer cutOFF cONtrOL
40Hz
The subwoofer's Cutoff control adjusts the subwoofer's cutoff between
Level
40Hz and 200Hz. The higher you set the Cutoff control, the higher
in frequency the subwoofer will operate and the more its bass will
"overlap" that of the soundbar. This adjustment helps achieve a
smooth transition of bass frequencies between the subwoofer and the
Phase
soundbar for a variety of different rooms and subwoofer locations.
Cutoff
40Hz
Pairing
Level
To set the Cutoff control, listen for the smoothness of the bass. If the
bass seems too strong at certain frequencies, try a lower Cutoff control
setting. If the bass seems too weak at certain frequencies, try a higher
Cutoff control setting.
Phase
suBWOOFer PHase sWitcH
This switch determines whether the subwoofer's piston-like action
Cutoff
moves in and out in phase with the speakers in the soundbar. If the
subwoofer were to play out of phase with the soundbar speakers,
some of the sound waves produced by the soundbar and subwoofer
40Hz
could be canceled out at some frequencies, reducing bass
Pairing
performance and sonic impact. This phenomenon depends in part on
the relative placement of the soundbar and subwoofer in the room.
Phase
Although there is no absolutely correct setting for the Phase switch, in
most cases it should be left in the "0°" position. When the subwoofer
is properly in phase with the soundbar speakers, the sound will be
clearer and have more impact. It will make percussive sounds like
drums, piano and plucked strings sound more lifelike. The best way
Pairing
to set the Phase switch is to listen to music that you are familiar with
and adjust the switch so that drums and other percussive sounds have
maximum impact.
MAX
200Hz
MIN
MAX
0°
180°
200Hz
MIN
MAX
0°
180°
200Hz
0°
180°

sPeciFicatiONs

sB300 sYsteM
Frequency response:
42Hz – 20kHz (–3dB)
sB300cNtr POWered sOuNdBar sPeaker
Two 2" (51mm) cones per channel, video-
Low-frequency transducer:
shielded
One 1" (25mm) dome per channel, video-
High-frequency transducer:
shielded
Amplifier power:
30 watts per channel
Audio controls:
Volume, surround mode
Optical digital (TOSLINK
Connections:
analog (RCA-type) inputs
Power requirement:
100V – 240V, 50Hz/60Hz, 80W
Power consumption:
1W standby; 80W maximum
3-5/8" x 45-3/4" x 3"
Dimensions (H x W x D):
(92mm x 1162mm x 76mm)
Weight:
5.5 lb (2.5kg)
sB300suB POWered suBWOOFer
Low-frequency transducer:
8" (200mm) cone, down-firing
Enclosure type:
Ported (down-firing)
Amplifier power:
100 watts
Frequency response:
42Hz – 200Hz (–3dB)
Audio controls:
Level, phase, cutoff frequency
Connections:
LFE input, left and right RCA line-level inputs
Power requirement:
100V – 240V, 50Hz/60Hz, 160W
Power consumption:
1W standby; 160W maximum
19" x 14-1/4" x 14-1/4"
Dimensions (H x W x D):
(483mm x 362mm x 362mm)
Weight:
24.5 lb (11.1kg)
™
) input, stereo
7
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