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Aiwa CX-NMT90 Operating Instructions Manual: Adjusting Speaker Level Balance

Compact disc stereo system.
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The Dolby Pro Logic feature
and the center and rear speakers
(standard)
assure full-scale
home theater
sound. When playing
back laser discs or video software
that have been recorded
in
Dolby
Surround,
astonishingly
realistic
sound
surrounds
the
listener
to create a new level of audio/visual
entertainment.
Independent
control of the four sound channels
allows the listener
to enjoy the same type of sound
reproduction
experienced
in
movie theaters.
Voices
are reproduced
in the front and center
sound
field,
while
ambient
sounds
like cars and crowds
are
reproduced
on all sides of the listener
for an incredibly
lifelike
audio/video
experience.
Please
read the following
carefully
to
"tune" the system's
output
to match the characteristics
of your
listening
space,
Check the following:
Before using the DOLBY PRO LOGIC, adjust the proper
balance of speaker sound levels.
Make sure the supplied
speakers
are properly
connected
and
positioned.
(See page 3)
Make sure the TV set and video unit are properly
connected.
(See page 4)
Make
sure
the
laser
disc,
video
tape,
etc.,
support
no
~DOLBY SURROUNIJ.
ADJUSTING SPEAKER LEVEL BALANCE
DOLBY
2,4
1
3
The unit is equipped
with a built-in test signal generator
called a
noise sequencer
for easy balance adjustment
of all four channels.
The sequencer
outputs a noise signal that "travels" from channel
to channel,
enabling
the simple
adjustment
of sound
level to
achieve,
at the listening
position,
the same apparent
loudness
from each channel.
Use the remote control.
1
2
Press the DOLBY PRO LOGIC button to select
NORMAL.
NORMAL
lights up in red.
If PHANTOM
or 3CH - LOGIC
lights
up in red, press the
DOLBY
PRO
LOGIC
button
repeatedly
until
NORMAL
is
selected.
Press the MANUAL
SELECT (TEST) button and
hold it down for about four seconds
until "L"
flashes.
3
4
r
L:
Left speaker
—CEN:
Center speaker
SUR: Surround
speakers
e
R: Right speaker 3
Adjust
the sound
level of the center
and the
surround
speakers.
While "CEN" or "SUR
is displayed,
press the DOWN l<<
or
UP
>1 button to adjust the volume
of the center or surround
speakers
To adjusi
to match the level of the left and right speakers
the balance
between
the left and right speakers,
see page 6. At this time, the DOLBY PRO LOGIC mode should
be canceled
by pressing
the DOLBY
PRO LOGIC button until
the "P-OFF
is displayed.
Press the MANUAL SELECT (TEST) button again
to stop the noise signal.
m
If the surround
speakers
level of the SURROUND
is changed
(see page 7), that of the DOLBY
PRO LOGIC
is 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 delay time
The surround
speakers
reproduce
sounds
a split second
after
the
front
speakers.
The
delay
is initially
set
to 21
ms
(milliseconds).
To change this standard
delay time, press the MANUAL
SELECT
(TEST)
button
on the remote
control
repeatedly
until "TIME"
is
displayed.
Then, press the DOWN 1<< or UP
>1 button.
Each
time one of the buttons
is pressed,
the delay time changes
as
shown
below.
15mS+-+21mSH30mS
A noise signal is sent to each channel
in turn in the following
sequence.
~7
ENGLISH

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