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This is more of a question than troubleshooting help but I just finished two of these boards with a friend with a buff n blend on each (not realizing the signal is inverted until after we finished. going to add the stage 3 booster in series to it next to fix that!) and had a question on the noise floor.
We added the depth mod to both of these and it seems when more modulation is added by raising the capacitance on c18 the noise floor gets louder and louder. are there some good tips to reduce that? maybe replacing some diodes with silicon or would swapping the electrolytic capacitors with audio grade ones would help?
Other than the white noise I absolutely love this chorus effect, with he added blend (especially once I get it back to non inverted) there are some really rad tones you can get with it.
Thanks,
Johl
Hi Johl: Not quite sure I understand your concerns here. The Mini-Me already has an effective depth control and my recent build seems very quiet (IOW, none of the white noise you speak of). Have you spent time biasing the circuit? There seems to be a sweet spot where the chorus is strongest and the noise minimal. Maybe give the biasing aspect another try and see if you can minimise the noise thereby.
sorry that was a bit of a ramble, I was just questioning the noise floor not realizing it isn’t common.
based on your response maybe I just have a bad bias pot? I did get the cheapo one. It goes from no effect with no added noise to some weird distorted effect to the chorus with a high noise floor and then back the opposite way. No sweet spot. I will replace it with a bourns and see if that helps.
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