Ampage.org - Looks like a good tech head site. Check it out and see what you think. Mostly guitar oriented it appears but plenty of cross-over and some bass specifics. In doing a broad spectrum search, there's no indication of mention of this site on TB before yesterday. I'd been to it before checking out tube info (many of you probably have too) but never had to go through the home page to get there and wasn't aware of all the other stuff on that site till Phil Mailloux brought up in the pup forum that it had pup winding info on it - and it's probably the best source on pup winding I've run across (that's hard to come by stuff).