This is a library of perfboard and single-sided PCB effect layouts for guitar and bass. I'm not an electrical engineer by any stretch of the imagination, just a DIY'er who likes drawing layouts. It is meant for the hobbyist (so commercial use of any of these layout is not allowed without permission) and as a way to give back to the online DIY community.

Wednesday, July 20, 2016

Walrus Audio Deep Six Compressor

Apparently it's going to be a compressor week. It came to my attention that my original schematic and layout for the Deep Six had a few errors. And since I want to build this one myself and my dislike of off board wiring, I laid this out for board mounted pots. It should be a pretty comfortable fit in a 1590BB, but if you're unlike me and don't mind playing with hookup wire, you could probably fit it in a 125B. Essentially, this is a modded Ross Compressor/DynaComp based off the BYOC 5-Knob Compressor and with a charge pump. I know a lot of you like to do charge pumps differently, so I've left that off the board so you can pick your preferred charge pump daughter board. And if you want to just run it at 9v instead of 18, that totally works as well.




And here's the updated schematic for references:

17 comments:

  1. is it verified?
    i would but it would take too much time for my to do it

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  2. how is the 2k trim used? would you explain please?

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  3. that ratio it's a blend? the 2k trim it's a threshold right?

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  4. Hi! What is the right way to install and wire an LED in case it's going to be used with both 9v and 18v? I know there should be connected through a CLR resistor of some value, calculated by max working current of given resistor, but it depends on supply voltage. I can't figure out how.

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    1. I hadn't given it much thought before. I'd probably just use a 10k resistor or do some breadboarding

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    2. I am currently building using this layout. I've got plastic jack sockets which do not make contact with enclosure and I didn't think about grounding before started. What is the best place to ground both signal in and out sockets?

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    3. I've got some like that. What I do is connect all the grounds together, typically to one of the jacks, then run a wire from there to the back of one of the pots. That will ground the aluminum enclosure as well.

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    4. so that would be some sort of "star" grounding?

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    5. In this particular build where did you connect your power socket ground?

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    6. I have a problem with my build. I guess it works but I hear a high frequency noise all the time. Sort of a very high and thin whistle mixed with the sound. I have tried both 9v and 18v power supply and with 18v the whistle noise just becomes louder. Please, would you help me to fix this. I have no idea why this happens. I only guess that the problem is not coming from anywhere outside.

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    7. Try adding a low value capacitor from the voltage rail to ground (100n or so). See if that filters out the noise.

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    8. no it doen't help. I think there's some sort of parasitic oscillation at few kiloherz within the scheme. The frequency of that noise gets a bit higher when SUSTAIN knob is turned at maximum. I have recorded the sound of it to determine the frequency looking at spectrogram. The noise is approx 11.5 - 12 kHz. I can't check it now with 18v because the charge pump has died eventually. I huess the max1044 ic was fake or defected. Anyway the high frequency sound remains with 9v power supply.

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  5. What exactly were the errors in the original schematic and layout? I'd love to build a 6110 version of this thing. Thanks!

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    1. They weren't errors so much as it was more of the BYOC Compressor than the Deep Six (they're pretty close, but not quite the same). The other layout is verified though if you want to build it.

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