HTPS 300 (serv.man3) - JBL Audio User Guide / Operation Manual. Page 6

The HT PS300 contains a 
signal sensing auto turn-
on/off circuit. This feature
will automatically turn the

subwoofer on when you turn
your system on and begin
playing any program material.
The subwoofer will return to

standby when no signal is
received for approximately 
5 minutes. The power switch
is for vacation use only.

The Crossover Frequency
adjustment determines 
the highest frequency the 
HT PS300 will reproduce. It
allows a seamless transition
from the subwoofer to the

satellite speakers. Experiment
with this adjustment to 
find the crossover frequency
that sounds best with your
speakers.

Note: When the THX/Normal
switch is set to “THX,” the
internal crossover is bypassed.
Crossover frequency is then
adjusted at the THX processor.

The Phase switch is used to
adjust the relative polarity of
the subwoofer. Listen to your
HT PS300 subwoofer and main
speakers with the switch in
the “0°” position, then listen
to the same material with the

switch set to “180°”

.  Decide

which sounds better and
leave the switch in this posi-
tion. Repeat this procedure if
you change the location of
the subwoofer.

Off

Power switch off

Off

Off

On

Power switch on and play program material

Off

On

Standby

Simply turn off your receiver/processor. The HT PS300 will 

On

Off

turn off after approximately five minutes. The subwoofer will 
turn on when your receiver/processor begins playing again.

Note: When the THX/Normal
switch is set to “THX,” the
output control is bypassed.
Output level is then adjusted
at the THX processor.

HT PS 300 (120V) OM  7/22/98 2:05 PM  Page 6