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Advanced Features
29
ENGLISH
To create a simulcast recording first select
the video source input (TV, LD, VCR2,
AUX) using the input selection buttons
on the remote control or front panel.
78c Next, select the audio source
(FM/AM, CD or TAPE 2) 346 .
Note that the on screen menu display will
show the split sources (Figure # 7). The
front panel display will show the audio
source in large letters in the main portion
of the Information Display, while the
video source will appear in smaller letters
next to the VISUAL¡ indicator. Once
the split source is configured, select
SOURCE as the input for VCR1 by
pressing the VCR1 COPY button Ò on
front.
Delay Time Adjust
One aspect of the surround modes is the
delay of audio signals between the front
speakers and the rear speakers. Each
surround mode is factory preset with a
specific delay time, but it is possible to
individually adjust the delay timing to
custom tailor the sound to your
individual taste and the acoustic
conditions in your listening room or
home theater.
The factory setting is appropriate for most
rooms, but some installations create an
uncommon distance between the front
and surround speakers that may cause
the arrival of front channel sounds to
become disconnected from surround
channel sounds.
To re-synchronize the front and surround
channels, follow these steps:
1. Measure the distance from the
listening/viewing position to the front
speakers (in meters).
2. Measure the distance from the
listening/viewing position to the
surround speakers.
3. Subtract the distance to the
surround speakers from the distance
to the front speakers and add 5.
Multiply the result with 3, the
resulting number is the ideal delay
time (in ms) for your room. For
example, if the front speakers are 7 m
away and the surround speakers are
2 m away, the formula will be
(7–2+5)x3 =30. Thus, the correct
delay time in this room would be
30ms.
NOTE: The delay time may only be
adjusted in certain modes.
If the delay time needs to be changed,
it may be increased by pressing the
DELAY button @pon the front
panel. The delay time will be briefly
displayed on the video menus as well as
the front panel.
In addition to the use of the delay time
formula, it is a good idea to understand
the features of each of the AVR80’s
surround modes when entering delay
time. The chart on a following page
provides an explanation of the suggested
for each mode. The chart also contains
the delay time limits for each of the
modes.
Direct Digital Decoding
The AVR80’s digital signal processing
uses sophisticated microprocessors and
advanced digital audio engines that
manipulate sound in the digital domain.
In order to work with sound, these
circuits must first convert the incoming
analog audio input to a digital signal.
After processing, the digital audio signal
must be converted back to analog for
volume control and amplification.
While the digital to analog (D/A) and
analog to digital (A/D) circuits in the
AVR80 are high quality, any time an
audio signal is digitized or reconstructed
to analog there is the possibility of quality
loss. Thus the Direct Digital input of the
AVR 80 helps you to avoid un-needed A/D
and D/A conversion at least in Surround
modes from any laser disc player
equipped with a coaxial
digital output.
If your player has this type of output,
connect the LD player to the AVR80 with
a high quality digital interconnect (110
ohm cable with RCA plugs). The
connection should be made to the LD
DIGITAL IN jack S on the rear panel.
AVR80 manual 11/01/98 13:01 Side 29