The amp will have a decent amount of preamp gain/distortion I would most likely pair it with a Vintage 30 or a Warehouse 25W Green Beret, because I already have them.ĭifference would probably be subtle as I am not likely to get the amp up to full power often, but I would be interested in opinions/advice. I expect to use the Hammond 270EX PT, so my preference is to use a Hammond OT to purchase from the same distributor. I want to purchase the transformers now because I want to get a choke to play with a modification that I am doing with one of my old kit amps and I figure consolidating the orders may save on a little shipping cost.Ĭlassic Tone 40-18045 15W 8.5k (4, 8 ohm)Ĭlassic Tone 40-18090 20W 8k (4, 8, 16 ohm)Ĭlassic Tone 40-18038 20W 6.6k (4, 8 ohm) ![]() Note that a discrepancy between the primary impedance between a 4 ohm load connected to the 4-ohm tap, and an 8 ohm. The Z p-p and Ultra Linear ratio verify the design of the transformer. The test bed was a modified Heathkit W-6 amplifier with push-pull 6550s. ![]() ![]() I would benefit from some opinions/advice on selection of an OT for another amp I will eventually build with a pretty straight forward 6V6 push-pull power section. In the late 1980s I tested as many push-pull transformers as I could get ahold of.
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