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Yamaha DSP-A3090 Operation Manual Page 42

Yamaha digital sound field processing amplifier operation manual.
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3. LFE LEVEL (Adjusting the output level at the LFE
(low frequency effect) channel)
Control range: MUTE, –20 dB to 0 dB (in 1 dB step)
Preset value: 0 dB
This adjustment is effective only when the Dolby Surround AC-3
is decoded.
Adjusts the output level at the LFE (low frequency effect)
channel. If the LFE signals are mixed with signals at the main
channels to output them from the main speakers, only the level of
the LFE signals are adjusted. When adjusted to MUTE, only the
LFE sound will not be output. (See page 6 for details about the
LFE channel.)
4. CENTER DELAY (Adjusting the delay of center
sounds (dialog etc.))
Control range: 0 ms to 5 ms (in 1 ms step)
Preset value: 0 ms
Adjusts the delay between the main sounds (at the main
channels) and dialog etc. (at the center channel).
The larger the value, the later the dialog etc. is generated.
This is for making sounds from the left main, center and right
main speakers reach your listening position at the same time by
delaying the sound from the center speaker if the distance from the
center speaker to your listening position is shorter than the
distance from the left or right main speaker to your listening
5. CENTER GEQ (Adjusting the Center Channel Graphic
The built-in five band graphic equalizer is used to tailor, over a
±6 dB range, the overall output frequency response of the center
channel. The five bands cover the complete audible sound
spectrum and are centered on 100 Hz, 300 Hz, 1 kHz, 3 kHz and
10 kHz frequencies. Adjustment should be done to each frequency
Adjusting method
After selecting the function (title) in step 2 on page 36, press the
Parameter + or – key on the remote control to display the condition
of the equalizer. Then select a frequency with the Parameter
Select keys on the remote control and adjust its level with the
Parameter +/– keys.
Adjustment can be made by monitoring sounds using the test-
tone. To use the test-tone, press the TEST switch so that "TEST
DOLBY SUR." appears on the display before making adjustment.
The test-tone is output from the center speaker(s).


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  • lawrence Jun 25, 2015 02:24:
    I absolutely refuse to read this excuse of the alleged printed word any farther. I am insulted by the fact that the printing is encoded. What kind of machine printed these words? You should be ashamed of yourselves​. Was this an attempt to somehow save money? Did you have any of your own employees try to read this aloud ? Get real!