Yamaha DSP-AZ1 - Manual (Page 56)

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SET MENU ITEMS
1 SPEAKER SET
Set the speaker mode depending on your speaker system. See “SPEAKER MODE SETTINGS” on pages 34 to 37 for details about the
setting items.
2 LOW FREQ. TEST
Use this feature to adjust the output level of the subwoofer so it matches that of the other speakers in your configuration.
1 1 Press +/– to set “TEST TONE” to “ON”.
Cautions
• “ON” cannot be selected when the headphones are being used.
• Setting turns to “OFF” if the headphones are connected during testing.
• While the test tone is being output, the source sound cannot be output.
2 2 Adjust the volume with VOLUME +/– so you can hear the tone.
Cautions
• Do not turn up the volume too high.
• If no test tone is heard, turn down the volume, set this unit in the standby mode and
make sure all the necessary connections are correct.
3 3 Press to go to “OUTPUT” and press +/– to select the speaker you
want to compare with the subwoofer.
If “SWFR” is selected, the test tone above 90 Hz will not be output from the
subwoofer. The test tone will not necessarily be output from the selected speakers.
The output mode of the test tone depends on the settings of “1 SPEAKER SET” on
the SET MENU.
4 4 Press to go to “FREQ.” and press +/– to select the frequency you want
to use.
Set the center frequency (35 – 250 Hz or “35-250Hz”) to check that the subwoofer
level matches that of the other speakers.
5 5 Adjust the volume of the subwoofer with the controls on the subwoofer
so it matches that of the speaker you are comparing it to.
■ About the test tone
• The test tone is produced by the tone generator.
The tone generator produces a narrow-band noise centered on a specified frequency by
the band pass filter.
• You can change this center frequency from 35 Hz through 250 Hz in one-sixth octave
steps.
• You can use the test tone not only for adjusting the subwoofer level, but also for
checking the low-frequency characteristics of your listening room. Low-frequency
sounds are especially affected by the listener’s position, speaker placement, subwoofer
polarity and other conditions.
2 LOW FREQ.TEST
≥ TEST TONE………OFF
OUTPUT…MAIN L/R
FREQ.………………88Hz
Digital generator
(wide band noise produced)
Noise
FREQ.
Band pass filter
35 Hz – 250 Hz
Center freq.