Aiwa Z-VR55 Operating Instructions Manual page 16

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. PIease 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 4).
Make sure the TV set and video unit are properly connected
(see page 4).
Make sure the laser disc, video tape, etc. , support
unpowv SURROUNDI
1
The unit is equipped with a built-in test signal generator called a
noise sequencer for easy balance adjustment of all 5 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
COntrO1.
1 Press DOLBY PRO LOGIC to select NORMAL.
"NORMAL" is displayed.
If "PHANTOM" or "3 STEREO is displayed,
press DOLBY
PRO LOGIC repeatedly until "NORMAL" is selected.
2
Press MANUAL SELECT (TEST) and hold it down
for about 4 seconds until "L" flashes.
A noise signal ,is sent to each channel in turn in the following
sequence.
~ L: Left speaker- CEN: Center speaker+ R: Right speaker I
1- S-L: Left surround speaker - S-R: Right surround speaker ~
3 Adjust the sound level of the center and the
surround speakers.
While "CEN", "S-R" or %-L is displayed, press + or -
to adjust the volume of the center or surround speakers to
match the level of the left and right speakers.
To adjust the balance between the left and right speakerb,
see page 6. At this time, the DOLBY PRO LOGIC mode should
be canceled by pressing DOLBY PRO LOGIC until the "P-
OFF is displayed.
4 Press MANUAL SELECT (TEST) again to stop the
noise signal.
" If the surround speakers or the center speaker level of the
DOLBY PRO LOGIC is changed, that of the DSP SURROUND
system (page 7) and the DOLBY DIGITAL SURROUND (page
20) is also changed.
While "S-R" or "S-L" is displayed, both surround speakers output
the noise signal together. However, only the sound level of one
surround speaker displayed as "S-R" or 'S-l-" can be adjusted.
When the sequencer outputs a noise signal, a clicking sound
might be heard from the speakers due to the characteristics of
the circuit. This is not malfunction.
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 20 ms
(milliseconds).
To change this standard delay time, press MANUAL SELECT
(TEST) on the remote control repeatedly in NORMAL or
PHANTOM mode until "TIME" is displayed. Then, press the+
or -. Each time one of the buttons is pressed, the delay time
changes as shown below.
15ms ~ 201ms~30ms
15
ENGLISH