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sdman 15th October 2002 03:23 PM

Mystery module/hybrid
2 Attachment(s)
Any of you older guys that have been in the business since the sixties recognize this hybrid module? Ran across it in my junk
and it brought back a few memories. It came out around 1973.
Maybe Nelson and Grollings will recognize it.
Will send some files later.


djk 16th October 2002 12:40 AM

A model RCA model 2000 module, about 50W/8R. Quasi-comp output stage.

sdman 16th October 2002 12:36 PM

mystery module
2 Attachment(s)
Close enough. Actually it was a HC2500.
Sending some files that might be of interest to the
younger guys.


sdman 16th October 2002 12:54 PM

2 Attachment(s)
Another file

sdman 16th October 2002 01:28 PM

2 Attachment(s)
Another file, maybe this one will not show up twice.

sdman 16th October 2002 01:42 PM

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Another file

sdman 16th October 2002 02:18 PM

2 Attachment(s)
Last one

Nelson Pass 16th October 2002 05:10 PM

This last one for all intents and purposes is pretty much
the grand-daddy of the solid state amplifiers that followed,
and is almost precisely the HK Citation 12.

sdman 16th October 2002 07:30 PM

2 Attachment(s)
Yes! the Citation 12 was the most trouble free amp that I ever owned and it sounded good.
Would be interesting to build the 12 with the newer improved
transistors but my energy quotent/reserve is just about gone,
so maybe some of the young "Turks" on the Forum could take
a whack at it, could be interesting.
Here's another file with a little different take but basically the same.


mrfeedback 17th October 2002 12:32 AM

I'll bet those modules cost two arms and a leg back in 1974 ?.


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