System Configuration
7. Listen carefully and check to see if the1. Measure the distance from theWith the correct delay time figures for
tone is now at the same volume levellistening/viewing position to theyour listening room calculated, first make
from each channel. If further adjustmentfront speakers.certain that the unit is in the Dolby Pro
is required, press the Channel Select2. Measure the distance from theLogic mode by pressing the Surround
button l and repeat steps 4 through 7listening/viewing position to theMode button nor Dolby Surround
as shown above. Repeat the procedure assurround speakers.Modebuttons `until the Pro Logic
often as needed until the test tone circu-indicator C is illuminated.
3. Subtract the distance to the
lates and has the same volume from
surround speakers from the distancePress the Selectbutton j to begin the
each channel.
to the front speakers.adjustment process. The Information
DisplayFwill show the current delay
8. When all adjustments have been
a. When setting the delay time forsetting, such as REAR-15mS. If
made, press the Test Tonebutton
the Dolby Digital surround mode,adjustment is required, immediately
once to return to normal operation.the optimal delay time is the result-
press the Delaybutton g on the
Delay Settingsing figure. For example, if the frontremote to change the setting until it is
One aspect of the surround modes is thespeakers are ten feet away and theclosest to the desired time. Within five
delay of audio signals between the frontsurround speakers are five feetseconds the display will return to normal
speakers and the rear speakers. Eachaway, the optimal delay time isreadout and the setting will be entered.
surround mode is factory preset with afigured as 10-5=5. Thus, in this
The Dolby Digital mode also provides a
specific delay time, but it is possible toexample, the delay should be set at
separate setting for the center channel
individually adjust the delay timing tofive milliseconds.
custom tailor the sound to your individ-delay mode, since the discrete nature
b. When setting the delay time for
ual taste and the acoustic conditions inof Dolby Digital signals makes the
an analog surround mode (Prolocation of the center channel speaker
your listening room or home theater.
Logic, Hall, Movie or Matrix) takemore critical. To set the delay for the
The factory setting is appropriate forthe result of the subtraction andcenter channel, measure the distance
most rooms, but some installationsadd 15 to obtain the optimal delayfrom the preferred listening position in
create an uncommon distance betweentime. For example, if the frontthe center of the room to both the center
the front and surround speakers that mayspeakers are ten feet away and thechannel speaker and either the left or
cause the arrival of front channel soundssurround speakers are five feetright speaker.
to become disconnected from surroundaway, the optimal delay time is
channel sounds.figured as 10-5+15=20. Thus in
this example, the delay should be
To resynchronize the front and surroundset at twenty milliseconds.
channels, follow these steps:
AVR55 120 volt |
ACEC
HARMAN KARDON
