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From: ts2b+@andrew.cmu.edu (Terence Ronald Spies)
Newsgroups: rec.audio.high-end
Subject: Dynaco Stereo 70 mods
Message-ID: <10915@uwm.edu>
Date: 10 Apr 91 12:53:13 GMT
Sender: news@uwm.edu
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Approved: tjk@csd4.csd.uwm.edu
Originator: tjk@csd4.csd.uwm.edu


I have completed all the mods in the dynamods file available over anon.
ftp at csd4.csd.uwm.edu excepting one.  The forward feedback mod worked 
for a bit and then caused the amp to start howling at various high frequencies.

I realize this is probably due to unwanted coupling in the feedback section,
but I could not find any problems iwth the wiring.

Second, I installed a solid-state version of the 5ar4, which seemed to 
really tighten up the sound.

So, any reasons why the first mod didn't work and any comments on the second?


Terence Spies
ts2b+@andrew.cmu.edu