Yamaha Natural Sound AV-75PRO Owner's Manual page 9

This unit incorporates a sophisticated surround-sound processing circuitry
which allows you to expand the audio sound field for а theater-like
experience in the listening/viewing room.
SPEAKER PLACEMENT
in a full 5-channel system you will use two pairs of speakers: the FRONT
SPEAKERS, the REAR SPEAKERS, and the CENTER SPEAKER. |
You will probably use your present stereo speaker system for the FRONT
SPEAKER pair. The rear and center speakers do not need to be of such
high quality. But they should have high enough power handling to accept
the maximum output of this unit that will drive them.
FRONT SPEAKERS
Place the FRONT SPEAKERS in the normal position.
REAR SPEAKERS
Place the REAR SPEAKERS beside your listening position and facing a
little inward. They should be nearly six feet up from the floor.
CENTER SPEAKER
Place the CENTER SPEAKER precisely between the two FRONT
SPEAKERS. (To avoid interference, use a magnetically shielded speaker. If,
however, it is not effective, keep the speaker away from TV sets.)
Front Speaker R Rear Speaker
| Center Speaker
< > и 29
Front Speaker L
Rear Speaker
Rear Speaker
Rear Speaker
SURROUND MODES
ПП DOLBY PRO LOGIC SURROUND
This unit employs the Dolby Pro Logic Surround Sound system. This
system is similar to professional Dolby stereo decoders used in movie `
theaters, and the effect is more realistic than the conventional Dolby
Surround Sound Processing System for home use.
_ Тре Dolby Pro Logic Surround Sound system, by employing а four-
_ channel system, divides the input signals into four levels: the left and
right main channels, the center channel (to characterize dialogue), and the
rear surround-sound channels (to characterize sound effects, background
noise and other ambient noise).
As a result, compared to the conventional 3-channel surround-sound
system, the yield of the true center channel is added, thus even further
expanding the width of the surround-sound effect.
Dolby surround-sound is encoded on the sound track of commercially
available video cassettes and video discs as well. When you play a
source encoded with Dolby surround-sound on your home video system,
the Dolby Pro Logic surround mode on this unit decodes the signal and
feeds the surround-sound effects.
` The Dolby Pro Logic surround mode will have по effect on video sources
not encoded with Dolby surround-sound.
Note
H a graphic equalizer is connected to this unit, be sure all equalizer's
controls are set to the flat position when this unit is in the Dolby Pro
Logic surround mode. Otherwise, Dolby Pro Logic Zeie Wil not be
reproduced accurately.
DOS)"
Manufactured under license from Dolby Laboratories Licensing Corporation.
Additionally licensed under one or more of the following patents: U.S.
numbers 3,632,886,3,746,792, and 3,959,590: canada numbers 1,004,603
and 1,037,877. "Dolby" and the double-D symbol are trademarks ої Dolby
Laboratories Licensing Corporation. |