Dolby Laboratories CP65 manual

2-10

Cat. No. 241 Surround Equalization and Optical Bass Extension. Module (if fitted).

J1

High Low

subwoofer subwoofer

output output

Cat. No. 241

J1 Optical Bass Extension output level: sets the output level range for the subwoofer channel. In the HIGH position J1 is 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 set J1 to the LOW position. If you are unsure of the sensitivity of your power amplifiers set J1 to the LOW position initially. If the high output position is required this will be determined during OBE alignment.