Got the lowdown from the horses mouth. His Super Six is actually just a Super Six cabinet with innards built by Lord Valve. The speakers are a model called the "DT10" which were designed by Ted Webber and Lord Valve. Folks, the wait for a 10" speaker that will rock with the best vintage ceramic speaker Super Reverbs is over. These are as good as it's gonna get. I ran my Cowtipper 45 through a 4x10 cab loaded with these last night and am now sitting on 28 crisp 100 dollar bills that I got for my favorite 1966 Super Reverb amp. I just ordered 4 more that Tony Bruno will be putting into a cab for my Tweedy35. The D10's are available only through Lord Valve who also has a massive selection of nos tubes. The tubes are his main business and he builds amps only under special circumstances, such as Derek needing more volume for the Allman's live shows. Derek has just had 2 1965 Supers outfitted with the D10's for his own band's live shows and Warren has copped a few as well. Lord Valve does not have an active website but you can find his contact info at www.nebsnow.com/lordvalve He's a real character. A B3 player who plays on occasion with Derek and Warren. There are some links to live Derek Trucks shows where Lord Valve is rocking the B3. Here is the link: www.archive.org/audio/etree-details-db.php?id=23099 FatWillie is playing on the song"Feel So Bad". FatWillie is Lord Valve. Hope this helps some of you folks. I do my best to get accurate info right from the players themselves.