AudioKarma is a nice site with friendly helpfull people. It's mainly a DIY thing which to me is good because it tends to eliminate the profit-hogs. But it does get a little simple some times. DIYTube is a site that sells boards for amplifiers but the guys who run it are very sharp and helpfull and they charge really nothing for the boards which are very high quality. Sorry for the advertisement but they deserve it. You get good info on there. They have a DIY amp forum that deals with all kinds of circuits and they have even been known to have folks ship amps to them and repair them for free. Don't say I said so. The Joelist is what it is; you'all know what I mean. But I like it. DIY audio has a real large data base and that is very helpfull. I have plenty more but I don't want to hog the thread. Oh BTW there is ART; thats the best speaker forum out there.