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Recently got this driver, and though it looks a lot like an Altec I can't seem to figure out which model. Can you help? 1.4" exit, 6 3/8" outer diameter, ferrite magnet with rubber edge protector, 3 studs, 3 1/8" tall excluding studs, diameter of back cover 4 1/2", back held on by 4 hex screws,.

Need another pic that shows all 4 output tube sockets Can't quite see the the entire sockets in the picture. Couple thoughts though: Your chassis looks great from the top. You have bought some nice "iron" and done a nice job installing the transformers. The amp should sound good once you...

Having a transformer that can produce more current than what is required helps make the power supply "stiff" and well regulated. Either .45a or .5a are well over double what your amp will consume so either works in that regard. You may be underestimating the difficulty in getting 300vdc from...