Aiwa AV-D30 - Manual (Page 15)

ADJUSTING SPEAKER LEVEL
BALANCE
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3
The unit is equipped with a buiit-in test signai generator called a
noise sequencer for easy balance adjustment of all five channels.
The sequencer outputs a noise signal that “travels” from channel
to channel, enabling the simple adjustment of sound level to
achieve the same apparent loudness, at your listening position,
from each channel.
1 Select the Dolby Pro Logic mode according to
your current type and placement of the speakers.
(See page 13.)
2 Press the MANUAL SELECT button and hold it
down for about two seconds untM “L/R OdB”
appears.
DGlSYPROLOGiq
Adjust the sound level of the center and surround
speakers.
While “CEN”, “S-L” or “S-R” flashes in the display, press the
UPA or DOWNT button so that the sound level of the center
or surround speakers matches that of the front speakers.
The balance of the front speakers can be adjusted as well
while “L/R” is displayed.
4 Press the MANUAL SELECT button again to stop
the noise signal.
When adjusting the speakers level balance of the Dolby Pro
Logic, those of the DSP and 5.1 CH modes are also changed.
About the channels
The left and right speakers create the stereo effect.
The center speaker helps achieve precise sound positioning
over a broad sound field.
The rear-mounted surround speakers enhance the “depth” of
the sound field.
To change the surround speakers delay time of the Dolby
Pro Logic mode
The surround speakers reproduce sounds a split second after
the front speakers. The delay is initially set to 20 ms
(milliseconds).
To change this standard delay time, press the MANUAL SELECT
button repeatedly so that “SUR” is displayed. Then, press the
UPA or DOWNV button. Each time one of the buttons is
pressed, the delay time changes as shown below.
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A noise signal is sent to each channel in turn as follows;
DOLBY PRO LOGIC NORMAL or WIDE mode
I
L/R OdB (Left front speaker)*''
CEN OdB (Center speaker)
I
L/R OdB (Right front speaker)*'
I
S-R OdB (Right surround speaker)*
I
S-L OdB (Left surround speaker)*^
DOLBY PRO LOGIC PHANTOM mode
• L/R OdB*' -----► L/R OdB*
.0dB*2-<------ S-R OdB*
3 STEREO NORMAL or WIDE mode
L/R OdB* ' —► CEN OdB —► L/R OdB
r L/R
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“L” or “R” flashes to indicate one of the front speakers from which
the noise signaUs output.
The noise signal is output from the L and R surround speakers at
the same time.
[-»15n - 20ms ■<—>-30ms
To adjust the speakers level balance while listening to
the source (Doiby Pro Logic and 5.1 CH modes)
The speakers level balance can be changed after adjusting it
with the noise sequencer. The balance can be changed whenever
the Doiby Pro Logic system is turned on or the 5.1 CH function
is selected.
1 Play a disc or video software recorded in Dolby Pro Logic or
Dolby Digital Surround.
2 Press the MANUAL SELECT button repeatedly so that “L/R”,
“CEN”, “S-L” or “S-R” appears on the display.
3 Press the UPA or DOWNV button while the speaker name
to be adjusted is displayed.
ENGLISH
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