MMR fuzz

Stompboxes circuits published in magazines, books or on DIY electronics websites.

MMR fuzz

Postby Nocentelli » 23 Apr 2017, 22:42

Simple(ish) two transistor fuzz with a wide range of dirt sounds and decent clean up from the volume knob:

MMR fuzz_nocentelli.bmp


I figure some people may well have a 100kB dual-gang pot kicking around if they've ever built a klon (for the bass control), but it can be replaced with a single gang 100kB in front of the first stage or omitted altogether (replace 10n with 100n and lose the 1uF + pot gang)
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mmolteratx wrote:absolutely zero commercial use allowed. If I find anyone selling these, I'll fly to your house and kick you in the nads. And you may or may not find yourself in trouble.

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Re: MMR fuzz

Postby mirosol » 01 May 2017, 13:07

Here's a stripboard layout. Not verified yet.
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Re: MMR fuzz

Postby roseblood11 » 02 Jun 2017, 08:33

Looks interesting. Would really like to hear it!
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Re: MMR fuzz

Postby Timpanogos Slim » 16 Aug 2017, 21:54

I finished building one of these today, based on the transfer layout at the effects layouts blog, here:

https://effectslayouts.blogspot.com/201 ... -fuzz.html

I used PN2222A because i have stock on hand. I am under the impression that these are just a plastic 2n2222 but perhaps they are too different.

The tone stack works. It makes my bass louder. I'm not sure whether there is really "dirt" here.

Is there a recording of how it is supposed to sound?
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Re: MMR fuzz

Postby Nocentelli » 18 Aug 2017, 12:33

Timpanogos Slim wrote:'m not sure whether there is really "dirt" here.

Is there a recording of how it is supposed to sound?


No recordings, but it's really quite fuzzy, especially with the gain and bass up. I can't vouch for the layout or build, however.
mmolteratx wrote:absolutely zero commercial use allowed. If I find anyone selling these, I'll fly to your house and kick you in the nads. And you may or may not find yourself in trouble.
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Re: MMR fuzz

Postby mirosol » 18 Aug 2017, 22:25

Just checked the schematic against the layout again and didn't see anything off.

Altough. The was an error earlier on the layout. A missing strip cut above the Q2 emitter. Here's the fixed one.
+m
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Re: MMR fuzz

Postby Timpanogos Slim » Yesterday, 18:37

Alright. Just wondering if my expectations are correct. I'll go over the schematic and board to look for mistakes at some point.

If anyone does have a recording, I'd appreciate hearing it.
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