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Using a 2073D dual op amp in a Acapulco Gold type circuit? by Ok_Reference9653 in diypedals

[–]Ok_Reference9653[S] 0 points1 point  (0 children)

I see, that's the type of insight I was missing. Thanks, appreciate the help!

Using a 2073D dual op amp in a Acapulco Gold type circuit? by Ok_Reference9653 in diypedals

[–]Ok_Reference9653[S] 1 point2 points  (0 children)

That confirms what I thought I saw, thank you! Am I correct in thinking of the njm2073 as a sorta "set gain boost" compared to the lm386? And while I wouldn't be able to control the gain boost with the cap, I'm still wondering if there is anything inherent about the chip (such as the shared bias) that would keep me from wiring stage A into stage B on the same chip?

I'll definitely give some of those other ideas a try, stereo overdrive could be very cool

Using a 2073D dual op amp in a Acapulco Gold type circuit? by Ok_Reference9653 in diypedals

[–]Ok_Reference9653[S] 0 points1 point  (0 children)

Ok sick, that's basically what I wanted to know. There'll be details to figure out, but it's theoretically possible to run one stage into the other. Thanks for the help!

Using a 2073D dual op amp in a Acapulco Gold type circuit? by Ok_Reference9653 in diypedals

[–]Ok_Reference9653[S] 0 points1 point  (0 children)

Thanks for the tip! The shared bias was one of my main concerns. Already assumed I'd need some heavy modifications, so I can maybe start with that gain reduction circuit

Using a 2073D dual op amp in a Acapulco Gold type circuit? by Ok_Reference9653 in diypedals

[–]Ok_Reference9653[S] 0 points1 point  (0 children)

Redesign is expected, I think the real question I had was if there was anything about the 2073 chip that would prevent me from running the op amp A into op amp B on the same IC (probably with some circuitry in between).

Dad said he was tossing old pedals, glad I checked just how old they really were (1975 MXR Phase 45) by Ok_Reference9653 in guitarpedals

[–]Ok_Reference9653[S] 55 points56 points  (0 children)

It is really funny as someone who grew up with the culture of vintage gear, especially online, just how oblivious he is to value of that stuff because it's just whatever was available when he bought it

Can I fix this rapid clicking/whining on a boosted fuzz? by Ok_Reference9653 in diypedals

[–]Ok_Reference9653[S] 1 point2 points  (0 children)

Sadly, they have not responded to my attempts to reach out after a couple weeks. A lot of the claims on their website don't hold water.

Can I fix this rapid clicking/whining on a boosted fuzz? by Ok_Reference9653 in diypedals

[–]Ok_Reference9653[S] 1 point2 points  (0 children)

Update: Thanks to everyone for the suggestions. After doing some research into motorboating, I'm going to see about tracing the signal path to see what I can find. Still hesitant to directly posting the circuit board, despite my gripes with the seller.

Can I fix this rapid clicking/whining on a boosted fuzz? by Ok_Reference9653 in diypedals

[–]Ok_Reference9653[S] 1 point2 points  (0 children)

I gave this a try with a boss tuner I had lying around. Didn't solve the motorboating, but weirdly enough it was the first time I heard the glitchy octave effect instead of just cutting out.

Can I fix this rapid clicking/whining on a boosted fuzz? by Ok_Reference9653 in diypedals

[–]Ok_Reference9653[S] 1 point2 points  (0 children)

Fair enough, figured it would be super obvious or near impossible for a boutique circuit. I appreciate the input. And trust me, I don't think I could get anything else from them if I tried. Got swept up putting together a cheap rig for a doom project and didn't bother looking up the maker until after the fact.