Zenith DA3520, Operating Manual

Page: 35 / 48

SOUND OPERATION PAGE 35
Delay Time Setting
The interval from the speakers to the listener. If the distance
from the listener to each speaker is the same in the Dolby
Digital and Dolby Pro Logic mode, the delay time of each
speaker is as follows.
In Dolby Digital mode
Center delay time : 0ms
Rear delay time: 5ms
In Dolby Pro Logic mode
Center delay time : (no setting)
Rear delay time : 15-30ms
If the rear delay time is set in Dolby Digital mode, in the Dolby
Pro Logic mode the delay time will be set automatically.
The delay time is 1 msec per foot.
If the center and rear speakers are further than the front speak-
ers from the listener, the delay time will be set at minimum.
If the distance of D
S
is equal to or longer than the D
F
in the
left figure, set the Surround Delay Time as 0ms. Otherwise,
change the setting according to the specifications below.
Ex) If the distance from front speakers to the listener is 10 ft.
and from rear speakers from the listener is 5 ft., in the Dolby
Digital mode the rear delay time is 5 msec.
10 ft. (D
F
) - 5 ft. (D
S
) = 5 ft. (B)
5 ft. (B) = 5 ft. / 1 ft. = 5msec
If the distance of D
F
is equal to the distance of D
C
in the left
figure, set the Center Delay Time as 0ms. Otherwise, change
the setting according to the specifications below.
Ex) If the distance from the front speakers to the listener is
10 ft. and from the center speaker to the listener is 8 ft., the
center delay time is 2msec.
10 ft. (D
F
) - 8 ft. (D
C
) = 2 ft. (A)
2 ft. (A) / 1 ft. = 2msec
Press DELAY.
The current surround delay time appears in the display
window.
You can select center delay time by pressing
F F
/
G G
in
the Dolby Digital mode only.
Press D D / E E to change the delay time.
If setting is complete, press DELAY.
L
SL SR
R
C
D
C
D
F
D
S
(A)
(B)
SW
Delay Time Setting
Surround delay time setting
Center delay time setting
(Dolby Digital mode only)
Setting the delay time in the Dolby Digital
and Dolby Pro Logic modes
In Dolby Digital or Dolby Pro Logic mode it is
assumed that the time it takes the sound from each
speaker to reach the listener, is the same. But if the
time interval from the center or rear left and right
speakers to the listener is closer than the time
interval from the listener to the front left and right
speaker, the sound of center or rear left and right
speaker will reach the listener first; instead of the
sound of the front speakers. (It is desirable that the
sound from the front speakers reach the listener
first.)
Dolby Digital and Dolby Pro Logic modes provide
speaker time delay adjustments to resolve this
problem:; you can manually set the delay time of
the center or rear left and right speakers so that the
sound from all speakers will arrive simultaneously
to the listener.
❍ You can adjust the center delay time only in the
Dolby Digital mode; as you adjust it, the delay time
specified appears.
Note
1
2
3
2
1, 3