Operation; Crossover Adjustments - JBL PSW-D112 Simple Setup Manual

Operation

Power
When the unit is plugged in
the subwoofer is removed.
and power is on and no signal
Due to JBL's unique, high-effi-
is received, the LED on the ciency digital-amplifier design,
front of the unit will turn red. power consumption is minimal
When a signal is present, the
when the subwoofer is not
LED will turn green. Note: It
receiving a signal. Of course,
will take several minutes for
the subwoofer can be turned
the LED to turn from green to off, whenever desired.
red after the input signal to

Crossover Adjustments

Low-Pass Control
The Low-Pass control deter-
120
mines the highest frequency at
90
which the subwoofer reproduces
sounds. If your main speakers
60
can comfortably reproduce
120
some low-frequency sounds,
set this control to a lower
90
frequency setting, between
60
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 – 180Hz.
Level Control
The subwoofer Level Control,
located on the front panel,
adjusts the volume of the
subwoofer relative to the rest
of the system. Proper level
adjustment depends on several
variables such as room size,
subwoofer placement, type of
High-Pass Control
• If you hooked up your sub-
woofer as shown in Hookup 4
High
150 on page 5, you also have
Pass
the capability of adjusting
180
the high-pass frequency.
The High-Pass control
Low
determines the frequency at
150
Pass
which the main speakers
180
will start reproducing
sounds. If your main speak-
ers can comfortably repro-
duce some low-frequency
sounds, also set this
control to a lower frequency
setting, between 50Hz –
100Hz. This will concentrate
the subwoofer's efforts to
the ultradeep bass sounds,
while your main speakers
continue to reproduce the
mid-bass information. If you
Video Contour
main speakers and listener
The video-contour switch,
position. Adjust the subwoofer
located on the front panel,
level so that the volume of optimizes the subwoofer's
the bass information is pleas-
performance for movie listen-
ing to you.
ing. When the video-contour
switch is "on," the subwoofer's
performance is tailored to
deliver the impact and
are using smaller bookshelf fier incorporates a high-pass
speakers that do not extend crossover, your main speak-
to the lower bass frequencies, ers will continue to get a
set the high-pass crossover full-range signal.
control to a higher setting,
between 125Hz – 180Hz. Final adjustment and blending
With this setting, your main of the low-pass and high-pass
speakers will not have the controls may evolve over sev-
burden of reproducing any eral listening sessions. A good
low-frequency sounds. starting point would be to set
• If you hooked up your sub- both the low- and high-pass
woofer as shown in Hookup 1 controls to the same frequency
on page 3, the high-pass and adjust from that point.
frequency is fixed at 180Hz.
• If you hooked up your
subwoofer as shown in
Hookup 2 or Hookup 3 on
page 4, no high-pass
control adjustments can be
made from the subwoofer.
Unless your receiver/ampli-
– 6 –
excitement of today's movies.
The green LED will illuminate
when the video-contour switch
is on.