uhhh yeah, another muff a comin' ( video samples please check it out )

[joegagan]

scruffie, thanks for putting that vero together. looks great.
if you don't mind, the credit should be modified to include zac zagar on your graphic ( not getting too worried, it's still just a muff, we did not re-invent the wheel).

build this one, folks, you will not be dissapointed. what you hear in the video is a good representation.

[dumbmonkey]

I know it's been a while, but I finally got around to finishing one of these for myself.  I love it!  It's truly loud and nasty and it's found a place on my pedalboard.  I ended up putting a SWTC on the end to tame the highs a bit, which was a good idea because it was pretty sharp with my amp.  My build is a bit hissy though, should I think about using some shielded cable for the ins and outs?

[clamup1]

anyone made a pcb for this yet? i can make one but i dont know if it will work.

bbed this thing and i have to say i love this thing. good job op

[Scruffie]

anyone made a pcb for this yet? i can make one but i dont know if it will work.

bbed this thing and i have to say i love this thing. good job op

I will if someone etches me one 

[clamup1]

i made one but photobucket makes the pics too small to see. photobucket sucks ass. i might just bite the bullet and make one and see

@scruffie- you make a layout ill make you a board

[joegagan]

thanks guys. dumbmonkey, shielded cables from input to switch(ground only at the jack side) always seem to help, but don't look for a miracle. the noise is the isthe noise is th....

[Scruffie]

Here we go then, Unverified PCB, Will fit in a 1590B No Problem though, Onboard Pot as always, Mount on the back of the board.





Board Measures 50.80mm x 50.80mm

If someone wants to convert it to PDF, PM me and i'll e-mail you the Express PCB file, I don't have anywhere to host PDFs.

[blooze_man]

I just built this and it sounds really great. I thought I would post the vero layout that I made for it. I wrote in the cap values that I used but you can obviously swap them out for the "stock" values.



Edit: I just realized C4 needs to be in microfarads.

[keto]

I built one up today and it's spectacular.  Dunno what I did wrong on my previous attempt a few months back, just trashed that one  

I made a few *minor* changes, most of which I couldn't tell you whether they have any real effect or not but anyways  
-put a pulldown resistor at the input after initially firing it up and having more noise than I liked
-Q1 to ground thru a 226R not 2.2K
-1N914 diodes as that's what I have lots of
-10K added between the 2nd & 3rd stages.  No real reason, just seemed 'right' when looking at various schems for this circuit and variations.
-the 39K after the 3rd stage seemed more like part of the tone stack, so I reduced that to 10K, continuity with above.
-in the same vein, I used 15K not 10K at the top right corner.  Supposedly that's also higher gain, which would fit with my general goal.

I socketed the .05 and last 0.1 caps but ended up using those values.  It's got lots of bottom end, might be a touch boomy with some rigs.

I did put a SWTC at the end and am glad I did, just for a bit of treble cut ability.  Used a 25K log pot with 825R and .022 initially but that was too dark, dropped the cap to .01 and that seemed to be just about right.  I'll run it wide open for home volume but can see where it might get a bit spikey at megavolume, - can take a little or quite a bit of top end off with Mr. Hammer's lovely little circuit.

Tried it with a Tele and a Vibrochamp, also SuperSonic22.  And my kid ran his 335 copy thru the SS22.  He ended up absconding the pedal he liked it so much, and he's really not a fuzz guy.  I call that a win.

One last note, with either guitar's volume wide open and the strings muted, it was dead silent...so, it can be done.  Didn't use shielded cables but did put some ferrite beads at the input and power in, for whatever that's worth.

[joegagan]

awesome, nice report.

and thanks again to scruffie for documenting and the layout work. thanks to blooze man for the additions.

[Skreddy]

Stupid question here, but since there's no tonestack, why not just leave out Q4 altogether? 

[Derringer]

that basically comes down to whether or not there is enough volume after the two stages of negative feedback clipping


and that I don't know

[joegagan]

Stupid question here, but since there's no tonestack, why not just leave out Q4 altogether? 

hi marc.
i like the output to be high. the diode clipping seems to put enough squash on things that a makeup stage makes sense.
this circuit sounded so good when first fired up, i didn't want to change a thing.

[newb]

Sounds friggin awesome. Did you get the mics btw?

[GodSaveMetal]

Stupid question here, but since there's no tonestack, why not just leave out Q4 altogether? 

hi marc.
i like the output to be high. the diode clipping seems to put enough squash on things that a makeup stage makes sense.
this circuit sounded so good when first fired up, i didn't want to change a thing.

I'm also the same IDEA don't change anything it's sound great!!! somebody tried two of then together? it will be serious rrrooooarrrrrrrrrr!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

[Wild E]

if anybody is making PCB's of this I'm interested, 6 components to base and 6 components to collector of Q2 & Q3 is a lot for perf. I don't have Freq Centrals soldering skills. This ckt has been the only ckt on my breadboard since last May. From time to time I would try different transistor and/or diode combos for Q2 & Q3. But truthfully I haven't messed with it since I got my Blackstar HT5 at Christmas.

[Ry]

I built it on perf a couple months ago.  I love it, and I don't like the muff sound at all!  It gets into feedback territory easily.  

[GodSaveMetal]

Here we go then, Unverified PCB, Will fit in a 1590B No Problem though, Onboard Pot as always, Mount on the back of the board.





Board Measures 50.80mm x 50.80mm

If someone wants to convert it to PDF, PM me and I'll e-mail you the Express PCB file, I don't have anywhere to host PDFs.

Anybody verified this PCB??? I've love to make PCB!!! It's the easiest way!!!!!

[Scruffie]

Anybody verified this PCB??? I've love to make PCB!!! It's the easiest way!!!!!

I haven't as I can't etch... and no one's mentioned verifying or unverifying it but if anyone wants to etch me one it'd be appreciated  

I'll check the layout tommorow... I think I already did though and it looked fine.

[GodSaveMetal]

Anybody verified this PCB??? I've love to make PCB!!! It's the easiest way!!!!!

I haven't as I can't etch... and no one's mentioned verifying or unverifying it but if anyone wants to etch me one it'd be appreciated  

I'll check the layout tommorow... I think I already did though and it looked fine.

OK I want to build it!!!!!!!!!!!