Yamaha RX-V992 Mode D'emploi page 45

NOTE: If there is insufficient volume from the effect speakers, you
may decrease the main speaker volume level by setting the MAIN
LEVEL switch on the rear panel to "–10 dB", and adjust each speaker
level again. Volume controls on external power amplifiers may also
be adjusted if necessary to achieve proper balance.
NOTE: If not using a center speaker, be sure to set the "4. CENTER
SPEAKER" in the SET MENU mode to the PHNTM (phantom)
position. You will then hear the center channel test tone from the left
and right main speakers.
6. When this adjustment is finished, press the TEST key once again.
Remote control
NOTE: Once you have completed these adjustments, use only
VOLUME control of this unit or MASTER VOLUME keys of the
remote control unit to adjust the whole listening volume. Do not
change any other volume setting in the system.
TEST
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