User`s manual

B-Chain Alignment Procedures
Notes
5-17
Cycle the pink noise and adjust the L, C and R level controls on the Cat.
No. 510 so that each channel produces 85 dBc in the theatre, as measured by
the sound level meter at the location described in step 15 above.
Set the fader to position 0.
Return the NORM/SUB MUTE jumper to NORM.
5.3 Adjusting L,C,R Output Levels