Dolby Laboratories CP65 manual Cat. No , B-Chain Card, Cat. No , Power Supply Module

2-6

Cat. No. 242, B-Chain Card

J1

Jumper

Holder

(for storage)

Mono low

frequency filter OFF

100mV	Magnetic Input
in	Sensitivity Setting
in 1V
	Cut jumpers for
	high sensivity
	power amplifiers

J5

J6

J7

J8

Cat. No. 242

J1 Mono LF cut In/Out: selects optional low frequency cut when Mono (format 01) is selected. In some cases the extended low frequency reponse may appear to be out of balance with the restricted high frequency response needed for the correct reproduction of mono optical sound-tracks. Move J1 to the ON position to attenuate the low frequency response.

J5, J6, J7, J8 Output levels: Jumpers W5, W6, W7, and W8 are set at the factory for a power amplifier input sensitivity of between 90 mV and 1.23 V. If the power amplifiers used in the installation are very sensitive (10 mV to 100 mV input sensitivity), it may be necessary to cut these jumpers.

See page 4-21 for information on setting the magnetic input sensitivity. The setting in effect is indicated by the arrow shown above.

Cat. No. 249, Power Supply Module

	BYPASS OUTPUT LEVEL RANGE
	Low
	Hi	J1
Cat. No. 249	Low	Hi

J1 Bypass output level Hi/Low: Set to the Low bypass output range initially. If increased bypass output gain is required, as determined during the bypass gain adjustment later in this manual the jumper should then be placed in the Hi position.