Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: idsnowdog on April 02, 2024, 06:50:43 pm
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I have built a preamp board for a HIWATT DR103 project using this layout https://hiwatt.org/Layouts/Tag2.gif . I do not need the 50/100 watts of a DR504/DR103 and would like to build a power section under 10 watts. I realize that 10 watts won’t give me the same ungodly loud clean headroom that HIWATT amplifiers are known for. But I'm not after cleans.
I scrapped a Hammond S6 organ and my input transformers are AO-26361/A0-26706 and output AO-26656-0. The organ had two 6V6 output tubes and I would like to use two 6P14P/EL84 or two 6AQ5 output tubes. I realize the transformers I am using aren't ultralinear or measure up to Partridge specs. So what power section would be a reasonable alternative? The Hoffman stout?
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I found a schematic and layout for the Trinity Triwatt and that looks like a good candidate. I would just need to rewire it to use 6AQ5 tubes instead. I could also use 6V6 tubes but I want to use something cheaper instead.
This is what the KT66 or 6V6 switch section looks like. If I wanted to eliminate the KT66 switch option how would I wire it?
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This is what the KT66 or 6V6 switch section looks like. If I wanted to eliminate the KT66 switch option how would I wire it?
You could start by posting a full schematic and layout.
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These are the Triwatt
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I found this in the builders guide. It wasn't labeled but it shows the wiring without the power tube switch.