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Hello Everyone,

I recently finished up a Madbean Dust Bunny build using all BC108's. Sounds good overall. I used an external bias pot, and I have a question regarding volume (probably a dumb question, tbh). When the pot is turned counterclockwise (voltage starve), the output volume drops. I'm assuming that's normal? When I move the bias to the proper ~4.5v range, there's plenty output on tap from the volume pot and it doesn't have to max out to reach unity gain. I checked the readings on each transistor and they all look pretty close to what's in the build guide. I just want to double check that my pedal is ok/normal, before I finish up the enclosure and call it a success. Please let me know if possible. Thanks!

Hi everyone. I have a few pedals that I'd like to build soon (Third Man Bumble Buzz, Blackout Effectors Blunderbuss/Fix'd Fuzz), and all 3 call for variations of the '2222' series transistor. The Bumble Buzz/Blunderbuss call for 2N2222 transistors, while the Fix'd Fuzz requires an MPS2222. Are these all pretty interchangeable within the '2222' series? I'm interested in purchasing one of these options possibly to cover everything:

ATP2222A:

http://smallbear-electronics.mybigcommerce.com/transistor-atp2222a/


PN2222A:

https://www.taydaelectronics.com/pn2222a-pn2222-transistor-npn-40-volts-1a.html



Any help/advice would be appreciated. Thanks!!

I just finished up my Pepper Spray build last night. Overall, I think it sounds good, but there are a few things I had questions on.

1) The output of the stock 1N695 diodes seems kind of low. Both the "Harm" and "Balance" pots have to be full on, before the signal reaches close to unity gain. Even then, it's still probably just slightly below unity. I used Red LED's as the second diode pair option, and there isn't a problem there. It's plenty loud on that setting. Is this the way that the stock setting is supposed to sound? Some other threads in the Madbean forum say yes, or perhaps, but I can't tell for sure.

2) On the LED diode pairs, only the LED in position D3 is visibly lighting up. The LED in D4 isn't lighting at all. I've checked both LED's individually (they're fine), tried different pairs, and still nothing for the LED in D4. I ended up using a water clear red LED for D4, and it gets the SLIGHTEST bit of signal through it, but I know it still isn't right.

3) As far as I can tell, both transistors are oriented properly according to the build guide. Here's the strange thing, the voltages on the transistors are much closer to the "Albini" version values than the stock values. The pedal is built completely to standard specs though.

4) Finally, I can't really notice any difference in texture/clipping symmetry when I change the trimpot value. Should it be pretty drastic/noticeable?

https://imgur.com/7IsTn3L
https://imgur.com/3z9tNin

Any help or insight with these issues would be greatly appreciated. Thanks!

Hi Everyone,

I built a Madbean Faultline several years ago, before the Catalinbread SFT Ver. 2 was released with the extra "Stones/Stoner" switch. I would love to go back and add that option to my old build if possible. Would there be any way of retroactively incorporating a DPDT switch into the original Faultline that I have? If so, where/how do I make the connections? Any help/suggestions would be greatly appreciated!