Harman Kardon AVR 55, Service Manual

Page: 21 / 84

System Configuration
If the distances are equal, no further
adjustment is required, and the center
delay should be set to zero. If the
distance to the front speakers is greater
than the distance to the center speaker
you may wish to reposition the speakers
by moving the front left/right speakers
closer to the listening position or the
center speaker further away from the
listening position.
If repositioning of the speakers is not
possible, adjust the center delay time
so that you add one millisecond of center
channel delay for each foot that the dis-
tance to the center speaker lags behind
the front speakers. For example, if the
front left/right speakers are each 10 feet
from the listening position and the
center channel speaker is 8 feet away, the
delay is figured as 10-8=2, suggesting an
optimal center delay of 2 milliseconds.
To change the delay settings for Dolby
Digital operation, first calculate the
correct timings as outlined above. Next,
make certain that the AVR55 is in the
Dolby Digital mode by pressing the
Dolby Digital/AC-3
button
Û z
on
the front panel or remote. Make certain
that the
Dolby Digital Indicator
B is
illuminated.
Next, press the
Select
button
j
to
begin the adjustment process. The
Information Display
F will show
the current setting, such as
REAR - 15 mS
.
If adjustment is required, immediately
press the
Delay
button g on the
remote to change the setting until it is
closest to the desired time. Within five
seconds the display will return to normal
readout and the setting will be entered.
To adjust the delay settings for Dolby
Digital, press the
Select
button
j
and
note that the
Information Display
F
will show the settings for both the center
and rear/surround delay as
C - 0 mS R - 10 mS
.
The center channel delay will blink,
indicating that you may change the
setting.
Press the
Delay
button
g
to change
the center delay time to the desired
setting. When the appropriate number
is shown press the
Select
button j
once so that the number for rear/
surround delay time on the right side
of the display blinks.
Use the
Delay
button
g
to change
the rear/surround delay to the desired
setting.
When both settings are correct, press the
Select
button
j
again and note that
the display will stop blinking. After a few
seconds the display will return to normal
operation and the settings will be entered
to memory.
AVR55 120 volt