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To set the delay time of the speakers
In Dolby Digital or Dolby Pro Logic mode it is assumed that the distance from the listener to each of the
speakers is equal. If not then setting the delay times of the center or rear speakers the sound will be heard
simultaneously by the listener.
The interval from the speakers to the listener. If the distance from the listener to each speakers is same, in
the Dolby Digital and Dolby Pro Logic mode the delay time of each speakers is as following.
xIn Dolby Digital mode
Center delay time : 0 – 5ms
Rear delay time: 0 – 15ms
xIn Dolby Pro Logic mode
Center delay time : cannot 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
automatically set.
The delay time is 1 msec per 30 cm.
If the center and rear speakers are further than the front speakers from the listener, the delay time will be
at minimum.
Surround delay time setting
If the distance of DS is equal to or longer than the DF in the below figure, set the Surround Delay Time as
0ms. Otherwise, change the setting according to the below.
Ex) If the distance from front speakers to the listener is 3 m and from rear speakers from the listener is 1.5
m, in the Dolby Digital mode the rear delay time is 5 msec.
3m (DF) - 1.5m (DS) = 1.5m (B)
1.5m (B) = 150cm / 30cm = 5msec
In Dolby Pro Logic II (Surround delay time):
• Movie: 10 – 25msec
• Music: 0 – 15msec
Center delay time setting (Dolby Digital mode only)
If the distance of DF is equal to the distance of DC in the below figure, set the Center Delay Time as 0ms.
Otherwise, change the setting according to the table below.
Ex) If the distance from the front speakers to the listener is 3m and from the center speaker to the listener is
2.4m, the center delay time is 2msec.
3m (DF) - 2.4m (DC) = 60cm (A)
60cm (A) / 30cm = 2msec
(A)
L
R
C
D
C
D
F
SW
D
S
SL
SR
(B)
GB
25
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