Geek wrote:In your case, loading would be the cure. Load the resistance across the transformer until all peaks are less than 1dB. It's often seen in old schematics as a resistor with a low value DC blocking cap.
Cheers!
It was just a hypothetical to explore the theory.
But, so far so good. This weekend I'll probably drag out the scope and sig. gen. to see what's what. See if I do have a "case," when I make the windows rattle, see if anything is hiding in there. Maybe put a couple of 100K pots in the GFB lines to see how it sounds and reacts with FB.?