JBL CS1500 User Manual

8
SUBWOOFER OPERATION
Press the Master Power
switch (marked “Power” a)
to the On position to use the
subwoofer. The CSS10
subwoofer will automatically
turn on or go into standby
(sleep) mode as described
below. When your receiver or
amplifier is off, or is not
sending program material
to the subwoofer, the
subwoofer will be in standby
mode (the LED on the front of
the CSS10 will be red). When
the subwoofer senses an
audio signal, it will
automatically turn on (the LED
will be green). If the
subwoofer does not sense a
signal after approximately 20
minutes, it will automatically
go into standby mode.
If you will be away from home
for an extended period of time,
or if the subwoofer will not be
used, switch the Master
Power switch a to the Off
position by pressing it until it
pops out.
VOLUME
Volume may be adjusted using
the Subwoofer Level control
b, as shown.
The Phase control determines
whether the subwoofer’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 c 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
subwoofer for optimum
performance 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
experiment with the phase
switch in both positions, and
leave it in the position that
maximizes bass performance.
MIN MAX
Subwoofer
Level
MIN MAX
Subwoofer
Level

JBL CS1500 Specifications