JBL PS1400, Руководство по обслуживанию

Страница: 5 / 20

5
∞ ∞
LFE Level Control – This
control only affects the signal
sent to the LFE input. Adjust
the LFE level by starting with
the level controls on both
PS1400 modules in the
Minimum position. With 5.1, 6.1
or 7.1 source material playing,
advance the LFE Level controls
on both PS1400s slowly until
the desired amount of effects
channel is present. The normal
position for this control is full
clockwise, with LFE adjust-
ments being made via the level
adjustments on your processor.
We have provided this control
because the LFE output level of
AV receivers and processors
can vary from manufacturer to
manufacturer.
If you are using the third or
fourth configurations, where
the main speakers are con-
figured as “Small” and all bass
information is being sent to the
LFE inputs of the PS1400s, the
LFE Level control will operate
on all low- frequency infor-
mation, and not just for the .1
channel effects.
§ §
LFE/Subwoofer Input – This
jack accepts either an LFE or
line-level output from the
receiver or processor.
¶ ¶
System Input – These
binding posts accept a full-
range, amplified (speaker-
level) output from the receiver
or amplifier. This input should
be used whenever the PS1400
and PT800 modules will be
stacked and the internal
crossover used to form an
integrated floorstanding
speaker system. This input
should be used in that
configuration even if the LFE
input will also be used.
• •
Power – This is the main
power switch, which must be
turned on for the amplifier and
electronic internal crossover to
function. If you will be away
from home for an extended
period of time, or if the PS1400
will not be used, turn this
switch off to conserve
electricity.
If there is no sound:
•
Check that receiver/amplifier is on and a source is playing.
•
Check that the PS1400 is plugged in and its Power switch (8) is switched on.
•
Check all wires and connections between receiver/amplifier and PS1400 . Make sure all wires are
connected. Make sure none of the speaker wires are frayed, cut or punctured.
• Review proper operation of your receiver/amplifier.
If there is low (or no) bass output:
•
Make sure the connections to the left and right “Speaker Inputs” have the correct polarity (+ and –).
•
Make sure the PS1400 is plugged into an active electrical outlet.
• Make sure the Power switch (8) is on.
• In Dolby Digital or DTS modes, make sure your receiver/processor is configured so that the subwoofer
and LFE output are enabled.
• Adjust the Polarity switch (4) if the PS1400 and PT800 are not stacked, or if they are stacked but
an external crossover is being used.
•
Adjust the LF Level control (3).
•
If the LFE input is in use, adjust the LFE Level control (5).
PS1400