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I believe 4nf is the correct value for that era Big Muff. Also tolerances are something to keep in mind as well. MLCC and electrolitics are usually 20% tolerance and film or box caps are any where from 5 to 10% so in all likely hood 3.9nf would easily fit the bill and is way more common than...

I've built several of them and I've used the TQ2-L-5V and I've used EA2-5SNJ. They both worked fine but the EA2-5SNJ is harder to find in stock.

While I was rooting around trying to figure out the volume problem I noticed that I was getting continuity across the the resistor I had in there so I took it out. Once I got the problem figured out and put back together I didn't hear any pop when engaging or disengaging the pedal so I just left...

Finished this one up this weekend. I had a lot of trouble with this one most of which was volume related. At first I couldn't get it to unity much less any boost so I switched to a a100k which got me the volume I wanted but all of the usable range was in the last quarter of the pot. I ended up...

Pedalhacker still has some NOS MC3404N's. https://www.pedalhackerelectronics.com/TI-MC3403N-Quad-Opamp-DIP-14-Boss-OD-1-Texas-p/mc3403n.htm

Is there an eta on the build doc? If not I have a couple of questions to help me get started on it at least. First what are the switches (ON/ON or ON/OFF/ON) and which is which? Second what is the pots order? Like volume, presence, gain on the top row treble, mids, bass second row. Thanks in...

So apparently Smallbear is no longer selling the wah enclosure kits. They have a couple of kits on ebay but I'm not sure they are the same as the ones that Smallbear had and the wah boards were designed to use. Has anyone else found a reasonably price new source for them?

They should work but be mindful of the pin outs a lot of the bc series have different pin outs than the 2n's.

I get these and cut them into two. https://www.mouser.com/ProductDetail/538-25001-0802

I wasn't really looking at anyone in particular the one I did find an actual name for was the Sanwa OBSF-30. I was just going to see what the best deal I could find was. I just couldn't find anywhere where any of them would say it used a momentary SPST switch. They all seemed to be the same...

I have a keyboard player friend that wants a Superheterodyne but wants a softer more hand friendly on/off switch. I've seen arcade style buttons used on pedals but I can't seem to find any data sheets on them. I'm just curious if they'd work with the relay bypass module?

Thank you for the quick response. It's a weird one all PNP and not positive ground. Can't wait to try it out.

I'm also waiting on the schematic for this one before I solder in the MJE210.

Would these work in place of the TQ2-L-5V? https://www.mouser.com/ProductDetail/KEMET/EA2-5SNJ?qs=rjnFDYRVT0pyNrkQASyvGA%3D%3D

I swore I saw the schematic for this the other day now I can't seem find it. Or am I just imagining things again?

I made the Powersound overdrive and it works but not properly it's very gated and splatty. I'm pretty sure that the voltages are off but I'm not sure where to begin fixing them. Here's the voltages with and without the transistors in. With: Q1...

I tried moving the wires for the in and out closer to and farther away from the board and I couldn't hear a perceivable difference. I tried switching out the LM324 and that may have helped the tiniest bit but the ticking is still there. Any other suggestions, voltages to check, parts to swap, or...

Yep those are the ones. I wouldn't say I bought them out but I did get 10 because Mammoth has been out for so long and Tayda was having their 15% off special.

I prefer the "Pro" 3pdt switches from Mammoth or the Alpha ones from Tayda. They are both slightly more expensive but I think they both are better quality.

Is anyone else getting ticking from the lfo? I have tried several pt2399 chips, all of which worked fine in my Gravity Wave. I also switched out the led from a super bright clear blue to a defused green led which may or may not have helped. The chorus sounds great but if you mute the strings you...