Yamaha GX-70 - Manual (Page 21)

E-9
English
SETTING UP THE SPEAKERS
This system is designed to provide the best sound-field quality with a 5 speaker configuration: front speakers, rear speakers and a
center speaker. You may omit the center speaker, if for some reason it is not practical to use a center speaker. (Refer to the “4-
Speaker Configuration” shown below.)
The front speakers are used for the main source sound plus the effect sounds. The rear speakers are used for the effect and
surround sounds, and the center speaker is for the center sounds (dialog etc.).
(1)
(2)
Rear L
Rear R
Ac tiv e Se rv o Tech nology
Ac tiv e Se rv o Tec hn ology
Speaker configuration
(1) 5-Speaker Configuration
This configuration is the most effective and recommended
one. In this configuration, the center speaker is
necessary as well as the rear speakers. If the sound field
program DOLBY PRO LOGIC or DOLBY 3 STEREO is
selected, conversations will be output from the center
speaker and the ambience will be excellent.
● Set the center channel mode to the “NORMAL”
position. (For details, refer to page 15.)
(2) 4-Speaker Configuration
The center speaker is not used in this configuration. If the
sound field program DOLBY PRO LOGIC is selected, the
center sound is output from the left and the right front
speakers, although the program DOLBY 3 STEREO is
useless in this configuration. However, the sound effect
of other programs can be the same as that of the 5-
speaker configuration.
● Be sure to set the center channel mode to the
“PHANTOM” position. (For details, refer to page 15.)
Note
Be sure to use two rear speakers. If you connect one rear
speaker only, sound will not be output from the rear speaker.
Speaker placement
Front speakers: In normal position.
Rear speakers: Behind your listening position, facing
slightly inward. Nearly six feet (approx.
1.8 m) up from the floor.
Center speaker: Precisely between the front speakers.
Rear L
TV set
Rear R
Front L Center Front R
Dialogue
Surround sound
Dialogue
Surround sound
Rear L Rear R
Front L Front R
Dialogue
Surround sound
Dialogue
Surround sound
Rear L Rear R
Front L
Front R
Center