Looking for RCA MI-10234 schematic

[beatnik]

title says it all

couldn't find this schematic in the technical documents or google

 

[emrr]

It's in the Audio Cyclopedia (2nd Ed?) with description, if you have one.    Do you have an original unit?

 

[beatnik]

i don't have an original but just interested in seeing the schematic

do you know the tubes and transformers selection for these units ?

would be great if someone could share a copy or a pdf version of the book

 

[mjrippe]

I scanned all of the compressor info from my copy of the Audio Cyclopedia (First Ed., First Printing).  The RCA MI-12244 is represented with full schematic.  In the optical film section is an uncredited schematic that I believe is the MI-10234.  It has tube numbers but no other values.  File too large for GDIY so it is available here: https://www.dropbox.com/s/aas2pfdroscpa16/RCA%20Comps.pdf?dl=0

 

[beatnik]

Thanks for the files

 

[emrr]

I believe it's credited and parts identified in 2nd ed.  I'm on road eith no current access.  They use custom Hollytran transformers like most Photophone amps of that era. 

 

[beatnik]

any idea on the iron specs ?

i have seen another circuit very similar with 6K7s and used UTC A-12 on the input, could this work ?

 

[emrr]

Sure.  The interstage would be the only critical spec, I think i recall one there.