Harman Kardon PA 2000, Руководство по обслуживанию

Страница: 10 / 104

OPERATION
Operation of the PA 2000 is simple. In normal
use, there are no controls to adjust once the
installation is complete.
After all connections have been made to the
amplifier’s inputs and speaker terminals, and
the AC power cord has been connected, the
way in which the unit turns on is determined by
the settings for the
Power Control Mode
Switches
£
. Depending on the settings, as
described on page 7, the amplifier will turn on
in one of these three ways:
• When the Power Control Mode Switches
£
are set to the right, in the ON position,
the PA 2000 will turn on when the Power
Switch
1
is pressed in. Press the switch
again to turn the amp off.
• When the Power Control Mode Switches
£
are set in the middle, in the “AC/DC
TRIGGER” position, the Power Switch
1
should be pressed in to place the PA 2000 in
the Standby mode. The unit will now turn on
automatically when a low-voltage signal is
present at the
Trigger Jack
§
.
• When the Power Control Mode Switches
£
are set to the far left, in the “MUSIC
SENSE” position, the Power Switch
1
should be pressed in to place the PA 2000 in
the Standby mode. The unit will now turn on
automatically whenever an audio signal is
present. The unit will return to the Standby
mode 10 to 15 minutes after the audio signal
is removed.
As a general rule, it’s always a good idea to
turn on your amplifier LAST. This avoids the pos-
sibility of any turn-on pops or transients from
other equipment being amplified and sent to
your speakers where they may cause damage.
Always start with a low volume level on your
receiver, controller or preamp to avoid damage
to your speakers.
You are now ready to enjoy the finest sonic
performance available.
SAFETY NOTE: To prevent unintended opera-
tion, remember to turn the unit completely off
when it will not be used for an extended period
of time. This is done by pressing the
Power
Switch
1
and noting that the Standby
Indicator
3
goes out. This will prevent the
automatic turn-on circuits from accidentally
turning the amplifier on during your absence.
Output Level Adjustment
In normal operation, the source unit controls
the volume for signals fed to the PA 2000. This
is particularly important for surround-sound
applications, as the volume to all channels in a
system, regardless of the amplifier, should be
equal in order to ensure proper reproduction. In
most cases, the factory volume setting is appro-
priate and need not be changed.
However, in some instances it may be necessary
to vary the output level of the PA 2000, either
to match the levels for surround systems, or to
set a fixed volume level for a remote room
speaker. In these cases, the PA 2000’s output
volume may be adjusted by turning the
Output
Level Trim Control
¢
on the rear panel.
When adjustment is required, turn the knob in
either direction until the desired level is
achieved.
When the PA 2000 is operated in the Bridged
configuration, use the
Output Level Trim
Control
¢
labeled “VOL. 1” to make adjust-
ments.
NOTE: The Output Level Trim Controls operate
for both speakers in a given channel. You may
adjust the output of one channel pair or the
other, but it is not possible to individually adjust
either the separate left or right channel output
within a given channel pair.
Operation
PA2000 harman/kardon
9