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Old 23rd Oct 2019, 11:31 am   #47
Michael Maurice
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Join Date: Feb 2006
Location: Wembley, Middlesex
Posts: 6,078
Default Re: Revox A77 refurbishment advice please.

P504 sets the VU meter level,

P503 sets the record level,

P501/502 set the equalisation. all should be set using an oscillator and meter and suitable tape.
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