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Old 15th October 2002, 03:23 PM   #1
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Question Mystery module/hybrid

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.

Sam
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Old 16th October 2002, 12:40 AM   #2
djk is offline djk
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A model RCA model 2000 module, about 50W/8R. Quasi-comp output stage.
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Old 16th October 2002, 12:36 PM   #3
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Default mystery module

Close enough. Actually it was a HC2500.
Sending some files that might be of interest to the
younger guys.

Sam
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Old 16th October 2002, 12:54 PM   #4
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Another file
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Old 16th October 2002, 01:28 PM   #5
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Another file, maybe this one will not show up twice.
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Old 16th October 2002, 01:42 PM   #6
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Another file
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Old 16th October 2002, 02:18 PM   #7
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Last one
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Old 16th October 2002, 05:10 PM   #8
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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.
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Old 16th October 2002, 07:30 PM   #9
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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.

Sam
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Old 17th October 2002, 12:32 AM   #10
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I'll bet those modules cost two arms and a leg back in 1974 ?.

Eric.
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