View Single Post
  #4   Report Post  
Posted to rec.audio.tech
Tim Schwartz Tim Schwartz is offline
external usenet poster
 
Posts: 62
Default McIntosh Driver Board Transistor Replacement

wrote:
I have a MC2300 in for service with a bad driverboard and need help
locating suitable replacements for an PNP / NPN pair. They're marked
032 922 and 021 909. I can only find a NTE cross reference (and I'm
not going there if I can help it!), NTE297 and 298, respectively. Any
help is appreciated!
Eric

Eric,

The McIntosh part number a

132-021 for Q107 (or 108)

132-032 for Q109 (or 110)

The 132-021 is a 2N3569. The 132-032 is similar to a 2N3645 and
according to my McIntosh info, is an approved replacement.

Later, McIntosh used a MPS-A05 (132-171) and MPS-A55 (132-172) pair as
replacements.


Regards,
Tim Schwartz
Bristol Electronics