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Sound quality/sound field operations
RQT6243

Enjoying surround sound

The following chart gives a summary of this unit’s surround features.
Note
•All the features are only effective if speakers are used. No discernible effect will be heard through headphones.
•None of the features are effective when radio is selected as the source.
•You may experience a reduction in sound quality when these surround systems are used with some sources. If this occurs, turn the surround
system off.

Surround system Features Software

DOLBY DIGITAL

(➡ page 20)
•Dolby Digital is a discrete 5.1 (6) channel
surround system developed for cinema
use.
The sound signals in Dolby Digital format
are compressed to 1/10 their original
size, allowing an entire movie to be re-
corded on a single DVD.
•This unit automatically recognizes DVDs
that have been recorded with Dolby
Digital.
•Not all Dolby Digital sources are record-
ed with 5.1 (6) channels.
Some sources marked Dolby Digital may
be recorded in Dolby Surround, a 2
channel system.
Software encoded with Dolby Digital can
be identified with this mark.
•DVD

DOLBY PRO LOGIC

(➡ page 20)
Software encoded with Dolby Surround
can be identified with this mark.
•DVD
•Video CD, CD
•Laser Disc
•Video tape
Manufactured under license from Dolby Laboratories.
“Dolby”, “Pro Logic” and the double-D symbol are trademarks
of Dolby Laboratories.
To calculate the delay time
D1: Distance from front speakers
D2: Distance from surround speakers
D3: Distance from center speaker
Setting the center channel delay time (Dolby Digital only):
If D1 is equal to or Set to 0 ms.
less than D3
If D3 is less than D1Increase 1 ms for every 30 cm (1 foot) of
difference between D1 and D3.
Setting the surround channel delay time:
If D1 is equal to or For Dolby Digital: Set to 0 ms.
less than D2For Dolby Pro Logic: Set to 15 ms.
If D2 is less than Start at 0 ms for Dolby Digital or 15 ms for
D1
Dolby Pro Logic, and increase by 5 ms for
every 1.5 m (5 feet) of difference between
D1 and D2.
D1
D3
D1
D2D2
Front
speaker
(left)
Front
speaker
(right)
Center speaker
Surround speaker
(left) Surround speaker
(right)
A Refer page 21 for operation.
Dolby Pro Logic is a decoding system that
was developed to get a better sense of
presence from sources encoded with
Dolby Surround. The balance of sound
has been improved by the addition of a
separate center speaker channel.