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I agree that it's not as good low gain, but great hi gain.

I think if you are going this route, there are a few things that matter to bass and that you can socket: 1: Clipping caps: seems like 47n is ideal, but worth experimenting 2: Coupling caps: standard is 100n. I thought that 220n might be a little high. I have read that it may not matter if you...

Ultra Violet Muff Add LED clipping options (less compressed/more open) Up the value of the coupling caps (more bass) Make the clipping caps the same value as Russian (just clips the upper end but lets more clean bass pass)

It's a great resource... and I'm not sure if he even updates it, does he? I can see going so deep on one topic and then not really wanting to go back to it. I couldn't blame him if he didn't.

I don't know.... I'd just make those caps the 47n of the russian... I just did that on my ram's head and it sounds better on bass. I wouldn't worry about a switch. Just try both and see what you like. You aren't going to want to go back and forth once you find what you like. Make a switch for...

Interesting that you would bring up how the ram's head would sound with 47n caps in C6 and C7... right now I have a violet ram's head and the green russian on my board. I switched out the C6 and C7 from 100n to 47n and it sounds a lot better on bass. Does what it should: moves the clipping up to...

I have heard that 100nf caps should be letting everything through as well... but when I increased some of the caps to 220nf, the bass (at least seemed to) increase. It was like it took up more of the signal. Is that just perception? Or really happening?

Just played it with a band: had a russian with the coupling cap switch and a ram's head with the 100n coupling caps, so I could compare and contrast pretty easily (despite the different versions). I def need to get somewhere inbetween. So, maybe 160 caps?

Maybe I'll try the C3 mod. I've done a lot of diode experimenting... into that. I actually did go down to 430pf with those caps (civil war values) and didn't like it. Made the bass a little too tight and refined.

Anyone else give this a shot? I have a new muff and replaced C3, C4, C7, C12 (I only had 4 caps) with 220n. It is much bassier, and the clipping goes down into the bassier end of the spectrum. I have done it on a previous muff and liked it, but I'm a little more attuned with this one. I'd like...

Hey all, Have been really wanting to get the Broughton HPF + LPF as my Q/strip HPF/LPF is not adjustable. But, realized that my Son of Ben has a HPF/LPF for the tone stack. Does anyone know enough about the Son of Ben to know if the filters there are comparable to a dedicated HPF/LPF like the...

I’m also finding that running the pedal at higher than 9v (12/18) also opens things up for bass. BUT it doesn't break up as well. Has way more headroom before breaking up.

Thank you! All good info. Maybe I'll start with the input cap and see where that gets me. And yes, I meant adding to C4 on the Greengage schematic.

Thank you for this! Very helpful. I have actually been building pedals for a while now, but I'm only starting to "understand" what I've been doing. :) Your series/parallel description with caps is something obvious that I never knew... and it goes a long way to explaining why pickups sound the...

I think it is in the opamp feedback loop... so that's interesting because the circuit is now amplifying too much of the low frequency. That makes more sense now. I wish I could breadboard this one, but I'm just not there yet and don't have time to figure it out now. Someday!

@Feral Feline what numbers do I want for bass? For example, in the below from the Greengage OD, I replaced C4 with 400N As is, the freq is 339hz (according to https://rc-calculator.glitch.me/) Change to 400n and the freq is 85hz, which is too low sounding. I'm still not sure what this...

I ended up adding a 300n to the 100n at C4. I think that might be too much. Makes the bass a little too much and the pedal jumps into overdrive with even the slightest turn of the drive knob. I'll have to crack it open again this weekend and switch that 300n out for maybe a 100n to make C4 200n...

Just messed with the biasing a little bit. I'm able to fine tune it some, but it's not so far off with the provided values. I wish that I could get it to be a little less spiky/splatty but I need to test it through a real world amp to actually see what it sounds like. Just put it back to...

For use with bass: I ended up switching out C6 and C8 for 330n (what I had on hand, though I think anything 100n and above would have been fine). That really opened up the pedal and makes it sound a lot fuller and more useful on bass. Also omitted C5 so that there's more gain before breakup.

I ended up switching out C6 and C8 for 330n (what I had on hand, though I think anything 100n and above would have been fine). That really opened up the pedal and makes it sound a lot fuller. At least on my bench rig, it sounds great! I rebiased the JFETs as well. I did that correctly when I...