RCA

[emrr]

BA-74A factory modifications

 

[emrr]

BA-74B

 

[emrr]

BA-74B specs

 

[emrr]

BA-74B response, description

 

[emrr]

BA-74C

 

[syn]

Some diagrams and schematics from RCA BC100 broadcast mixer to follow.

 

[syn]

RCA BC100 preamp.

 

[syn]

RCA BC100 preamp.

 

[syn]

RCA BC100 eq (BE100).

 

[syn]

RCA BC100 signal flow.

 

[emrr]

RCA BA-31A voltages

 

[Ethan]

Instructions for RCA 41-B
[submitted by: dmp]

 

[gridcurrent]

MI-12202

 

[Ethan]

UOAB schematic and notes
[submitted by: pucho812]

 

[emrr]

RCA BA-72A, very often found as part of the BA-41A package which replaced the BA-31 standalone. 

 

[emrr]

PSU portion of the BA-41A package

 

[emrr]

MI-9357A theater preamp.  Some of these output transformers are really 10K DCR primary, some are not.  Curious. 

 

[Monte McGuire]

The complete RCA BA-6A manual, scanned by me, part 1 of 2:

 

[Monte McGuire]

The complete RCA BA-6A manual, scanned by me, part 2 of 2:

 

[emrr]

1930ish 12-A program amp