Power/Level Control/Crossover Adjustments; Operation - JBL PowerBass PB10 Owner's Manual

O P E R A T I O N
Power
When the unit is plugged in
and the power switch is on
and no signal is received, the
LEDs on the front of the unit
will turn red. When a signal is
present, the LEDs will turn
green.
Level Control
The subwoofer Level Control
adjusts the volume of the
subwoofer relative to the rest
of the system. Proper level
adjustment depends on
several variables such as
Crossover Adjustments
The Crossover Frequency
Control determines the highest
frequency at which the
subwoofer reproduces sounds.
If your main speakers can
comfortably reproduce some
low-frequency sounds, set this
control to a lower frequency
setting, between 50Hz – 100Hz.
This will concentrate the
subwoofer's efforts on the
ultradeep bass sounds
required by today's films and
music. If you are using smaller
bookshelf speakers that do not
extend to the lower bass
frequencies, set the low-pass
crossover control to a higher
setting, between 120Hz –
150Hz. This control is not used
when the LFE switch is in the
"LFE" position.
6
Note: It will take several
minutes for the LEDs to turn
from green to red after the
input signal to the subwoofer
is removed. Due to JBL's
unique, high-output, high-
efficiency amplifier design,
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.
LEVEL
Min
LFE
PHASE
0º
CROSSOVER
FREQUENCY
50Hz
PowerBass PB10
L
LINE LEVEL IN
For LFE use L or R
L
HIGH
LEVEL
IN
R
+ –
L
HIGH
LEVEL
OUT
R
ON OFF
POWER
PowerBass PB10
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
power consumption is minimal
when the subwoofer is not
receiving a signal. Of course,
the subwoofer can be turned
off, whenever desired.
LEVEL
Max
Min
NORMAL
PHASE
180º
CROSSOVER
FREQUENCY
150Hz
50Hz
PowerBass PB12
R
LINE LEVEL IN
For LFE use L or R
+ –
ON OFF
120V
60Hz POWER
PowerBass PB12
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
Max
LFE NORMAL
0º 180º
150Hz
L R
L
HIGH
LEVEL
IN
R
L
HIGH
LEVEL
OUT
R
120V
60Hz