Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: Joel on April 06, 2023, 02:20:53 am
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Hi all,
Thought I'd share some pics of my latest project. Yeah, yeah, D-style amps have been done to death. Well, too bad! Here's another one. I basically followed the Trinity amps 6V6 lunchbox D-style amp documentation as inspriration, but sourced all my own parts. From the chassis, to the faceplate, to the relay pcb, to the cab, all DIY'd baby! Unfortunately, I didn't take a final built gut shot.
I did have to replace the 1N4007 rectifier diodes with Ultra Fast diodes, and bypass each of them with 0.01uF caps to eliminate some noise from the power supply. Now its nice and quiet, and being used in a Wet-Dry rig with my Hoffman style AB763 single channel DR. Nice!
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next pics
Not shown - WGS ET65 speaker
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Hey, thanks for sharing the photos of the build! Looks like you did a great job.
If you have sound clips, I'd love to hear them. Are you pleased with the tone? Did it meet your expectations?
With respect, Tubenit
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Very COOL :bravo1:
Franco
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Never enough D style amps! They sound so good . . .
Edit/Added: I just took a look at Trinity's schematic and layout. They simplified the build by eliminating the FET input, which makes sense to me (I haven't yet used the FET in a performance setting).
One question I do have is that they ran a 5 VAC twisted pair from the transformer all the way over to their relay board, covering the wires with aluminum foil. Is that effective? My preference would have been to build a 5VDC power supply near the tranny, and run the DC over to the relays. But maybe the simple approach does work here.
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Cool. Which schematic did you use?
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Great Job!!! :happy1: