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In Reply to: RE: Futterman H3 amp 'upgrades' posted by rogerh113 on August 02, 2019 at 07:10:23
that I think Julius gave me. I'll look for it. Separately, I also have a schematic for a giant Futterman amp that was built by a friend with Julius' advice and input. It has 8 output tubes, and I think that may be the only difference between it and an H3. The problem with that one is that it is huge and framed. I hate to take it out of the frame, but I may be able to photograph it and send you a copy.
Follow Ups:
Did I miss it, or is there no on/off switch on the amp? Is the intent to leave it on all the time (hard to imagine) or to pull the plug from the wall when you want to turn it off? I realize it is old, but it certainly does not predate on/off switches.
Always interesting to see what is there (or not).....
I cannot recall whether my made-by-Julius H3aa's had an on-off switch. In those days, it was often the custom to control the ampifiers via switch-able female AC outlets plugs installed on the back of the preamplifier. You could switch the amplifiers on and off from the front panel of the preamp. Modern purist approaches have done away with that custom, pretty much. I do know for sure that my ca 1980 Beveridge amplifiers were originally switched on and off via the front panel of the Beveridge preamplifier, for one example. I guess McIntosh used that system for ages, maybe even now. I had to install on/off switches directly on the Beveridge amplifier chassis's.
Thanks very much for the clarification. Back in my 'youth' I had integrated amplifiers, so all of this was a moot point. It is interesting how they did it, and possibly would not go down well with the quality power cord advocates (of which I am one).
regards -- Roger
Thanks very much. If you can find the schematic, I would very much like to get a copy.
No need right now for the 8 tube version - I will remember about it and ask you if I need a copy. The house is already pretty jammed with stuff.....
thanks -- Roger
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