Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: tubeswell on July 06, 2017, 08:40:41 pm
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Got one of these in for repair (was blowing fuses - all fixed now). Don't think there was much forward thinking about the layout for these. They must've run out of single-gang pots at the factory at the time LoL. The worst aspect is the bias pot is under the main board - real impractical to work on. Who would do such a thing in a production amp? As for the lead dress - Take No Prisoners! Argghhh!
The amp is like a latter-day dual showman, but with funky A/B channel switching arrangement, each channel with dedicated FX send/return loops via some canned audio transformers (see gutshot pic). (My favourite sound is from the clean ('A') channel.) The OT in this head has switchable 4R, 8R and 16R taps. This unit runs real sweet into 2 x 15 jbels, and sounds awesome with a stand-alone reverb unit in front.
Shame about the careless layout.
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I have one (#169) and the lead dress is a bit of a mess - but have you seen the inside of a Fender 75? The clean channel sounds really nice and is substantially louder than my '67 Dual Showman. The Lead channel isn't bad either if you keep the gain on the lower side and use it as a boosted sound with a bit is hair - turn it up too much and it gets fizzy. Lately it has been Dave Grohl's amp of choice. You see it quite a bit in the studio in the Sonic Highways series.