Dolby Laboratories CP65 - Manual (Page 57)

Action Indication Step
No.
5-36
B-Chain Alignment Procedures
e. Surround Equalization Alignment (Cat. No. 441)
6
9 REPEAT 6
→
8
8
7
Dolby
n-sync surr gain
Q
on
present signal gnd
gain
bass
Q
mid freq
cut
treble
tp
bass
Q
freq mid
cut
treble
gain mag/dig opt gain
off auto freq
cut
tp
present signal
Subwoofer
Left Surround
Right Surround
Cat. No.
441
Dolby
n-sync surr gain
Q
on
present signal
gnd
gain
bass
Q
mid freq
cut
treble
tp
bass
Q
freq mid
cut
treble
gain mag/dig opt gain
off
auto freq
cut
tp
present signal
Subwoofer
Left Surround
Right Surround
Cat. No.
441
Dolby n-sync surr gain
Q
on
present signal
gnd
gain
bass
Q
mid freq
cut
treble
tp
bass
Q
freq mid
cut
treble
gain mag/dig opt gain
off
auto freq
cut
tp
present signal
Subwoofer
Left Surround
Right Surround
Cat. No.
441
.05 .1 .2 .4 .8 1.6 3.15 6.3 12.5 kHz
dB
–10
+5
0
–5
+10
D I P
.05 .1 .2 .4 .8 1.6 3.15 6.3 12.5 kHz
dB
–10
+5
0
–5
+10
.05 .1 .2 .4 .8 1.6 3.15 6.3 12.5 kHz
dB
–10
+5
0
–5
+10
DESIRED
RESPONSE
B-Chain Alignment Procedures
Notes
5-37
e. Surround Equalization Alignment (Cat. No. 441)
Turn the freq control so that the notch is located over the peak noted in the previous step.
The treble and mid equalizer controls interact. Repeat the adjustments until no further
adjustment is required and you have attained the optimum frequency response.
Adjust the treble control on the Cat. No. 441 card for the best approximation to the desired
response shown.
Adjust the Cut and Q controls for the flattest response in this part of the spectrum.