Dolby Laboratories CP65 manual Auto Freq

5-50

B-Chain Alignment Procedures

h. Adjustment of Non-sync Gain

Step			Action	Indication
No.
5			Cat. No.
			441
		signal
		present
			tp
Subwoofer			on
			cut	Dolby
	auto		freq
		off	Q
n-sync		opt gain
surr		mag/dig
gain		gain
		treble
Surround			cut
	mid		freq
			Q
Left
			bass
			tp
		treble
Surround			cut
	mid		freq
			Q
Right			bass
			gain
			gnd
		signal
		present
		Cat. No.
			242
mono eq
mono
gain
non-syncL
		R
		L		Dolby
signal		C
present R
		Ls
	gnd
		L
test		C
points		R
		Ls
		L
gain		C
		R
		Ls
6			Cat. No.
			441
		signal
		present
			tp
Subwoofer			on
			cut	Dolby
	auto		freq
	off		Q
n-sync	opt gain
surr	mag/dig
gain	gain
Surround		treble
			cut
	mid		freq
			Q
Left
		bass
			tp
		treble
Surround			cut
	mid		freq
			Q
Right		bass
		gain
			gnd
		signal
		present

5-51

B-Chain Alignment Procedures

h. Adjustment of Non-sync Gain

Notes

Turn the Non sync surround gain on the Cat. No. 441 fully counterclockwise.

Play a cassette or CD on the non-sync device and adjust the non-sync L (left) and non- sync R (right) controls on the Cat. No. 242 B-Chain card for the desired level in the theatre. If possible, select a recording that has a natural ambience such as an orchestral work.

Adjust the Non sync surround gain control on the Cat. No. 441(if fitted) for the desired surround level in the auditorium. This control is not present on a Cat. No. 241.