User`s manual

B-Chain Alignment Procedures
Action
Indication
Step
No.
5-32
The CP45 incorporates a delay line in the surround channel to ensure that sound from the
rear of the theater arrives at the listeners’ ears approximately 20 milliseconds after the
arrival of sound from the front speakers. The delay is set into the Cat. No. 511 card via
a rotary switch. Use the following formula to calculate the correct delay setting:
1. Estimate the distance between a rear seat and the nearest surround loudspeaker, in
feet. If the metric system is used, convert the distance from meters to feet by
multiplying by three (3).
2. Estimate the distance from this seat to the front loudspeakers, in feet. If the metric
system is used, multiply the distance by three (3) to convert distance from meters to
feet.
3. Subtract the distance measured in step 1 above from the distance measured in step
2, then add 20. The result is the delay time, in milliseconds.
Determine the Cat. No. 511 switch setting from the table below:
Delay Time
(msec)
Rotary Switch
Setting
00
10 1
20 2
30 3
40 4
50 5
60 6
70 7
80 8
90 9
100 A
110 B
120 C
130 D
140 E
150 F
For example:
The selected seat is 10 feet (3.3 meters) from the surround speakers.
The selected seat is 80 feet (26.7 meters) from the front speakers.
The delay is set for (80-10) + 20 = 90 milliseconds (switch position 9).
5.5 Setting Optical Surround Delay
Cat. No. 511Cat. No. 511
44
BB
AA
99
88
77
CC
DD
EE
FF
11
22
33
66
55
00
-6.7V-6.7V
-12V-12V
+6.7V+6.7V
+12V+12V
MONO MODEMONO MODE
SURROUNDSURROUND
DELAYDELAY
SUBSUBSURRSURR
OUTPUT LEVELOUTPUT LEVEL
NS1 INPUT LEVELNS1 INPUT LEVEL
RIGHTRIGHTLEFTLEFT
ENHANCEENHANCE NORMNORM
NS1 MODENS1 MODE
MATRIXMATRIX NORMALNORMAL
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