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« on: December 03, 2019, 08:34:29 PM »
Hiya all. I'm not sure if there's still interest in this circuit, but I'd appreciate some advice here. I've been working on modifying the Clari(not) circuit. I've added an envelope/LFO modulation switch and a feedback path. I'm currently stuck on a gain switch.
Instead of the usual mod of cutting the connection between pins 1 and 8 of the LM386 (since there can be a loss in the wild modulation with this method), I'm trying to split the input into two buffered paths: one path (always on) goes to the LM386 while the other bypasses the LM386 and connects to the junction of the 10k and 22k resistors leading to pt2399 pins 15 and 16. In clean mode, the input goes to the LM386 to drive the LED for the LDR, but the audio signal goes to the 10k/22k resistor junction. In fuzz mode, the circuit input is buffered, but otherwise the same as stock.
All of the modifications work as expected—except for the input in fuzz mode. I'm getting an extremely gated, sputtery fuzz that completely cuts out with high amplitude input (i.e., hard strums with humbuckers). I've used an audio probe and can confirm that the sputtering is present at pin 5 of the LM386. I'm attaching the schematic for the input of the circuit and the power section. Any insight here would be greatly appreciated. Also, I can post the entire schematic if there's interest.
Cheers