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.

Monday, August 7, 2017

JHS Angry Charlie

I've gotten a few requests to redo the MI Audio Crunch Box with board mounted pots. How is that relevant to the Angry Charlie you ask? Well, it's the same circuit. JHS added a cap in parallel with the existing cap coming off the Presence control to ground which tames some of the highs. So if you want the Crunch Box, just leave that cap out.


17 comments:

  1. Yeah! This is very cool! Thanks man! You are the diyer evangelist!

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  2. means adding a 100nF cap on crunch box will make it Angry Charlie. nice!

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  3. Excellent work, congratulations to you

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  4. For anyone who's adventurous, I mashed up the Angry Charlie/Crunchbox with the original Guv'nor tonestack. Christened it the "Dirtbag". Will be verifying this tonight:

    http://imgur.com/a/T8NPi

    All tone pots are A10k, B100k for Vol/Gain.

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    1. It's verified. I really, really like this version. I find the tone stack to be a lot more flexible than the Angry Charlie/Crunch Box. I just kept wanting a bass control. Plus this one lets you scoop mids and get a pseudo-metal sound.

      There's not a TON of volume in the pedal, but it gets above unity even at minimum gain settings.

      The clipping LEDs light up quite nicely so it's a good candidate for mounting them in the enclosure.

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    2. nice, I'll give it a shot
      thank you

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    3. one more to clarify, is that 2.2uF above the IC a ceramic or elco?

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    4. I used a Tantalum cap there because I had it on hand. You can use that or an electro.

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  5. Good morning. The only thing I do not understand is the mounting of the diodes ... I see that they are mounted in different verses, but what side of the diode is the cathode? Thank you. Joseph.

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    1. The flat side of the LED indicates the cathode. In this case the cathode of D1 is on the right, the cathode of D2 is on the left.

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    2. Thanks for the clarification. in the coming days I will build it and let you know how to sing. joseph.

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  6. Man do I have the weirdest issue with this one and kinda stuck. I cn trace the signal amplified&all to pad 1 of the tone pot. Then it's just gone, it will not come through to the other pads..=). It's not the pot(checked and tried multiple), I've refloated everything and checked voltages all. After many etched boards, this is the weirdest...And most likely it's just something stupid I've missed. Still, this making my own pedals is an awesome way(most often) to quiet down my adhd brain so that I can sleep, thanks dude!

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    1. Did you check for any shorts from pads 2-3 of the tone pot or pad 3 of the presence pot? My guess is something is shorting to ground and killing your signal.

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    2. Oh yes, right you are. I stayed away for a day and looked at it again...And there it was, right under ny nose, how could I miss it eventhough I checked the board after etching...A tiny copper bridge straight to ground.

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