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  1. W

    General question on op-amp output resistors

    Brilliant. Thanks everyone for the input!
  2. W

    General question on op-amp output resistors

    Great, thanks for the explanations! It seemed like a best practice sort of thing so I figured it was for a reason...
  3. W

    General question on op-amp output resistors

    Ooook, I was wondering if it was a DC drain or something like that, cool. I guess the 470 ohm resistor is there just to prevent that leak from making it out to the cable? Thanks!
  4. W

    General question on op-amp output resistors

    I have seen many pedals using op-amp output buffers that include a resistor to ground after the output coupling cap, often 100k, and sometimes also with a small value resistor in the audio output path, like the 470 ohm below. I'm trying to understand the purpose of these - I guess the 100k ohm...
  5. W

    Abyss LFO choppy

    Hello! I just completed a build of the Abyss and I'm getting some weirdness with the LFO. When the intensity is high, if the voice control isn't also set to near max, the wave gets very square and choppy, with no smoothness. However, if I move the voice down, and then also reduce the depth, the...
  6. W

    Ridiculously loud output volume with Roboto

    Hey everyone, thanks so much for the replies. I will investigate further as soon as I get a chance, since it's such a simple circuit I will end up reviewing every component individually. I also agree that I could probably use a bit less solder and may as well clean the board to see if I made any...
  7. W

    Ridiculously loud output volume with Roboto

    Yes, at least it's labeled as A100k... I'm not sure how often pot tapers are mislabeled, but that might be it? lol
  8. W

    Ridiculously loud output volume with Roboto

    Woops Just checked the voltages on the regulator... outputting 3.28V, so we're good there. Confirmed that's what's feeding the TL072 non-inverting inputs. Even if a cap value is off, idk how that would so greatly affect the output volume. I also measured the volume pot before installing, so I...
  9. W

    Ridiculously loud output volume with Roboto

    Hello! I just completed the Roboto. It kind of works, I'm getting lots of crazy sounds, reminiscent of a ring modulator more than anything, but the output volume is absurdly high and it doesn't sound much like the demo videos. I can only the volume up a hair past 0 before it gets unbearably...
  10. W

    What's on the workbench?

    Walrus Audio Polychrome, or Julianna? The Caesar is soooo good, I need more!!
  11. W

    Deflector Reverb whine on low density settings

    Switch pop is a pretty common occurrence in guitar pedals that can be tough to get rid of. You can try using a soft touch footswitch, or just try a different footswitch in case you got a particularly stiff one, or wire a relay bypass module to significantly lessen the pop at the cost of higher...
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    Missing Build Docs / Schematics

    Box and All EQ build doc?? I got it boxed up, super simple build, but I cannot for the life of me figure out why I'm not getting sound. Just looking to trace the signal path since the op amp voltages are correct and I can't find any ground shorts.
  13. W

    Chaos Machine LFO tick in bypass

    I recently completed the Chaos Machine - it sounds great, I love the effect, but unfortunately I'm getting the dreaded LFO tick, even in bypass. A dang shame, since I've completed several PedalPCB builds with LFOs - Sea Horse, Dark Rift, Phase II, Circulator, and Photon Vibe - and all are dead...
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    Deflector Reverb whine on low density settings

    Excellent! This is my first FV-1 build so I didn't know what kind of idiosyncrasies to expect. Thank you!
  15. W

    Deflector Reverb whine on low density settings

    Hello! I recently finished the Deflector reverb - my goodness, what a blast. I don't have a ton of use for an ambient reverb, but it sounds great and turned out well enough to sell to someone looking for a discount Afterneath! My ONLY issue with it is that, as I turn the Density control CCW, a...
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