You are very likely correct about the caps being out of specification. Capacitors are a very critical component in tube guitar amps. They are one of the main reasons it is very difficult to duplicate the sound of vintage guitar amps because those types of caps are no longer manufactured to the exact specifications of the originals. The electrolytic are what I am speaking of.

I am not sure how far a cap in a transistor circuit could drift from standard before there was a noticeable change in the sound quality on studio monitors.

The Adam studio speakers are pretty expensive, well, at least to me. My intent is to keep mine running as long as I can. For one thing, I like them, and second I don't want to spend the money to replace them unless forced to.

I also read the toroidal core transformers issue referred to in the DIY post. My experience with toroidal-type transformers has been pretty good. Toroidal transformers generally offer better sound quality for audio equipment.

Gallian Kruger uses them in their bass guitar amps, along with switched power supplies. The power supplies are not so simple to work on. They had asked me at one time to do warranty work for them in south Florida. The power supplies cost enough that they wanted them to have troubleshooting at the component level; there were too many other irons in the fire for me to take them up on the offer.

Billy

EDIT: On another electronic note, I now have enough room in the house in Sebring that I may build a set of Electrostatic loudspeakers. I have the woodworking tools I need to build the cabinets. I have always wanted a set just to see what they would sound like. I have also wondered if I could use them in a guitar amp.

Last edited by Planobilly; 12/26/22 07:31 PM.
“Amazing! I’ll be working with Jaco Pastorius, Charlie Parker, Art Tatum, and Buddy Rich, and you’re telling me it’s not that great of a gig?
“Well…” Saint Peter, hesitated, “God’s got this girlfriend who thinks she can sing…”