|3rd October 2010, 08:57 PM||#32|
Join Date: Oct 2010
Hi all, I've been inspired to register and post by a visit from an old friend who has a minor issue with this amp.
He built the whole thing, including pre-amp.
His issue, apparently, is with the pre-amp.
There was a correction published by W.World sometime later that was essential for correct operation - he has never found this and cant remember what issue it was in.
It may have been in a letter to the ed. rather than another article or errata section.
The meat of it is that there is a problem with an inductor in the treble cut filter, maybe about 2mH?
Apparently is sort of works but is very tiring to listen to; perhaps its oscillating at some much higher frequency?
Does anyone have the correction?
He still has the original article but lacks the vital info to make it work properly, which is frustrating.
Yours in hope, Jim (acting for Ted)
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