On 28/04/2016 02:44, Phil Allison wrote:

BTW; anyone familiar with the famous Crown DC300A ?

Both channels would emit a long squeal about 10 seconds after switch off - it sounded much like a party balloon being let down while squeezing the neck.

There was a note inserted in later service manuals that *no attempt* should be made to fix the problem, as any possible fix would render the amp unstable.


My preamplifier did that.
http://www.keith-snook.info/wireless...amplifiers.pdf

It wasn't enough to damage the tweeters so I didn't worry about it.

--
Eiron.