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Dumble ODS 102 Build Log #5: Completion!
Intro Finally, the amp is complete! Since the last log, I received my head shell from Modulus. I had them design it to aesthetically match the Peavey 1×12 I’m using with it, and I think it really turned out great. I also finished the footswitch. I reached out to Amplified Nation to ask if I…
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Dumble ODS 102 Build Log #4: The Plan
Intro The Dumble ODS is not my first amp build, so I had some idea of what I was getting into when I set out to build it, but up until now, I had built exclusive Fender amps–a Tweed Champ and a Super Reverb specifically. Because those are ubiquitous, kits and vintage style replacement parts…
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Dumble ODS 102 Build Log #3: Overdrive Channel
Intro This will be the final circuit analysis article for the ODS #102, and it will cover everything after the tone stack but before the phase inverter. In addition to the tone stack, this is the place where Dumble’s circuit diverged most heavily from the Fender Twin Reverb, adding an overdrive channel and master volume.…
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Dumble ODS 102 Build Log #2: Tone Stacks
Intro H.A. Dumble’s most significant departures from the Twin Reverb when designing the ODS were undoubtedly the tone stack and following preamp gain stages. Dumble took a fairly straightforward and standard tone stack, completely re-voiced it, added a bunch of tone shaping options, and optionally added additional preamp gain stages if you engage the overdrive…
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Dumble ODS 102 Build Log #1: Input Stage Circuit Analysis
Now that I have a few amp builds and repairs under my belt, I have decided my next amp project will be a Dumble ODS clone. I’ve always loved the recorded Dumble tones, and whether or not it’s apocryphal, the story is that Dumble was trying to replicate the tone of an overdriven Super Reverb…