Yamaha DSP -A780 Instrukcja obsługi - Strona 22

Przeglądaj online lub pobierz pdf Instrukcja obsługi dla Wzmacniacz Yamaha DSP -A780. Yamaha DSP -A780 42 stron. Digital sound field processing amplifier

Drukuj stronę

1-4. ADJUSTMENT

MAIN/CENTER/REAR EFFECT SPEAKER LEVEL

BALANCE ADJUSTMENT

This operation uses an internal test-tone generator for balancing

the levels of the main, center and rear effect speakers. All speakers

should be adjusted to the same apparent sound level for proper

Dolby Pro Logic decoding.

1. Depress the TEST switch on the remote control to enter test

mode. A hiss-like calibration signal should be heard from the left

main speaker, center speaker(s), right main speaker and rear effect

speakers in turn (see diagram). Adjust the MASTER VOLUME to a

normal listening level.

The state of test-tone output is shown by the display panel and

the monitor screen. (Especially on the monitor screen, it is shown

by an image of audio listening room.) This is convenient for

adjusting each speaker level.

Left main

LEFT

2. Adjust the center and rear effect speaker level.

For adjusting the center speaker level:

Press the SET MENU/PARAMETER select ( ) key. "CENTER

LEVEL ··· dB" appears on the display and the test-tone is output from

the center speaker(s). In this state, adjust the center speaker level by

pressing the SET MENU/PARAMETER +/– keys.

Center

Right main

CENTER

RIGHT

Rear

SURROUND

For adjusting the rear effect speaker level:

Press the SET MENU/PARAMETER Select ( ) key. "SURROUND

LEVEL ··· dB" appears on the display and the test-tone is output from

the rear effect speakers. In this state, adjust the rear effect speaker

level by pressing the SET MENU/PARAMETER +/– keys.

Adjust each speaker level so that the sound coming from the

corresponding speakers seems to be at the same level as that from

the main speakers when you are at a normal listening position.

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 the center and rear

level again.

NOTE: If the CENTER MODE is set to the PHNTM (phantom)

position, the center speaker level cannot be adjusted. If using a

center speaker, be sure to set the CENTER MODE to the "NRML" or

"WD" position.

After completing this adjustment, press the TEST switch once

again.

NOTE: Once you have completed these adjustments, use only this

unit's MASTER VOLUME control to adjust listening volume. Do not

change any other volume settings in the system.