JBL PS120 Speaker User Manual


 
your receiver/T.V. / source
amplifier to produce the low bass
while passing the unaltered signal
source to the external speakers.
"Speaker Level Output (to
external speakers)" - Hook up
the external speakers using two-
conductor insulated wire following
the same procedure described
under Speaker Level Input.
Connect the red (+) terminal of the
PS subwoofer to the red (+)
terminal of the external speaker,
and the black (-) to black.
Connecting the external speakers
this way ensures that they will be
in phase; that is, working together
not in opposition. Connecting the
speakers out of phase won't
damage them, but will result in
less bass and poor imaging. (See
Fig. 3).
NOTE: Connecting your satellite
speakers through your PS
subwoofer won't change their
impedance.
LEVEL
NOTE: when first setting up
your PS subwoofer, set the
Level control counter-clockwise
to "Min" (minimum) before
turning power switch ON.
Turn power switch to On and use
the "Level" knob to add the
appropriate amount of bass to
your main speaker output.
Increase the subwoofer level by
turning level knob clockwise until
you find a setting that is pleasing
to you.
These differences can be a
different color wire (copper or
"silver"); a strand of yarn in one
conductor; thin, raised ribs on one
part of the outer insulation; or a
printed "+" marking on one of the
insulators. It doesn't matter which
of the two strands of wire go to (+)
and (-) on your receiver/T.V.
/source amplifier and PS
subwoofer, just be sure to connect
both left and right hookup wires
identically. Push down on the
button below the terminal and
insert the wire through the hole.
For each channel, connect the red
terminal on the receiver/T.V.
/source amplifier to the red or (+)
loudspeaker connection terminal
on the PS subwoofer, and the
black to the black or (-).
Connecting the PS subwoofer this
way ensures that both channels
will be in phase; that is, working
together not in opposition.
Your PS subwoofer will accept
stereo (left and right) inputs or a
mono input (hooking up to just the
left or right input) using either line
level or speaker level input.
CAUTION: Never attach inputs
to both line level and speaker
level inputs of the same channel
at the same time.
OUTPUTS
Your subwoofer has a speaker
output terminal block to enable the
signal to be sent to your main
speakers or satellites. Your PS
subwoofer can use the signal from
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