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, March 16, 2016

Klon Centaur - True Bypass

Here's the Klon again. I wanted one with board mounted pots and for a smaller enclosure. You might be able to fit this in a 1590B with low profile jacks, but it will easily fit in a 125B. It's designed for 9mm PCB mount pots, though it might be difficult to find the dual-gang Gain pot. Look for Alpha part number RD902F-40-00. I've removed a few components that were apart of the stock bypass switching for the sake of space, so you'll want to use your true bypass method of choice with this one.

20 comments:

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    1. Sorry about that. Just uploaded it to the Klon folder.

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    3. Thx man!! this is the best place for DIYs ;) ... one more: 1uf yellow cap... is tantalum cap?

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  2. Hello friend, sorry for the insistence. I have almost finished klon but i don't know what type of capacitor used for yellow capacitor (1uF). I have got one of Tantalum polarized but the scheme doesn´t show the polarity. Can i use a capacitor polyester film box? (non polarized) or i must use the tantalum cap. thanks again!

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    1. Sorry for the slow reply. Tantalum is what's used in the original there. The negative side goes towards the lower end of the board.

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  3. Good day!Not boxed yet,but verified it works and sounds great!

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  4. Woow man!it sounds really great, amazing. Thx!!

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  5. Guys, do you have a bill of material for this thing?

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  6. Any leads on where I might find the RD902F-40-00 potentiometer? My normal sources and a google search didn't really help me.

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    1. I haven't had much luck finding that part either. Small Bear carries a dual gang 9mm pot but it's not the right angle PCB mount. Though you could add some right angle legs with some heavy solid-core wire.

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    2. Yeah, I found a straight leg 9mm and had the same thought so that's prrobably what I will do. Thanks!

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  7. Hi, please I need help, I've done the pedal twice and it works but it has a very exaggerated distortion, it does not sound like an overdrive if not rather like a very brutal distortion, almost like a fuzz

    The plate and compents are fine and not of poor quality.

    Please, may I be doing wrong?

    Thanks in advance and greetings

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  8. Hello! Interestingly resistor assemblies on your 2M(old) and 2.2M, which is it? The standard scheme is not it. Thank you.

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    1. That's just a pull down resistor to prevent footswitch pop. Generally anything from 1-2.2M works.

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  9. Hello,
    was wondering where is the Klon true bypass drill template? Cannot seem to find it.

    Thank you

    John

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    1. Sorry about that. It's in the Dropbox now.

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