Moen - Fuzz Moo  [schematic]

All about modern commercial stompbox circuits from Electro Harmonix over MXR, Boss and Ibanez into the nineties.
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atreidesheir
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Post by atreidesheir »

This sounds like a very nice big muff pi. This is a good pedal!
I do not see anything here to change my mind.
I hope these pictures show that this is a very well constructed pedal and impressive ergonomics. Very well done!
Finally a circuit I can see. Enjoy.
All the poyfilm caps are marked .01 k 100
q1-q4 are 2n5088.
The diode on the trace side is 1n5399.
q5 is a c1815 audio frequency amplifier , (also marked gr3331)
The one electrolytic cap is 100uf.
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atreidesheir
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Post by atreidesheir »

[smilie=bump.gif]
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Post by pedalgrinder »

just a tip try using the macro function on your camera for your pics. Keeps the pics nice and clear for close ups on boards. I notice a lot of guys don't use it. It is for close ups. Keep up the good work. Cheers
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IvIark
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Post by IvIark »

A couple more gutshots:

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The 5th transistor seems to be used for millenium bypass
"If anyone is a 'genius' for putting jacks in such a pedal in the only spot where they could physically fit, then I assume I too am a genius for correctly inserting my legs into my pants this morning." - candletears7 - TGP

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atreidesheir
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Post by atreidesheir »

pedalgrinder wrote:just a tip try using the macro function on your camera for your pics. Keeps the pics nice and clear for close ups on boards. I notice a lot of guys don't use it. It is for close ups. Keep up the good work. Cheers
I will try to take some macro pics this weekend. It really is a nice pedal.
"Contemplate it - on the tree of woe." :Thulsa Doom

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wildschwein
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Post by wildschwein »

So is this thing pretty similar to a Big Muff?

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atreidesheir
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Post by atreidesheir »

Yeah. ram's head I think.
I thought I posted new pics. I will get some or find the old ones.
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wildschwein
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Post by wildschwein »

Wow just got this in the mail and it's great. Really smooth and liquidy - like mid-70s Gilmour in a box. It does remind me a bit of my old Sovtek Green Russian Muff from the mid 90s.

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gemather
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Post by gemather »

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This unit sounded too hot for my ears. The emiter resistors are just 100 ohm,
instead of 150 ohm in a regular Muff. Too small i think.
There is a possibility to make the whole circuit sound less noisy.

The sustain pot is grounded with some 1k resistor. I put some 1k resistor parallel.
now the sustain pot is grounded with only 500 ohm.

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gemather
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Post by gemather »

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tabbycat
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Post by tabbycat »


sounds kinda classy according to this demo. i usually find muffs too much vaseline and not enough sand to my taste, but this cuts through gritty good.

but not on ebay uk, amazon uk, gak uk, dv247 uk, thomann uk... available as import from us, aus, etc. a funny way to do business?

i know dave and gideon have completely alienated the uk in europe with their willy-waving big-talk but i didn't think we'd been completely financially ostracised yet?
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Post by IvIark »

I finally got round to doing a trace of the board

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"If anyone is a 'genius' for putting jacks in such a pedal in the only spot where they could physically fit, then I assume I too am a genius for correctly inserting my legs into my pants this morning." - candletears7 - TGP

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Post by Nocentelli »

So that's it? 100k instead of 39k off tone lug 3 to ground? Bit less midscoop?
Steven_M wrote: 21 Jan 2011, 17:52
biffa wrote:Sorry,but u r not the only member here
I'm not? Well fuck this site then. I only want meaningful conversations with myself.

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Post by IvIark »

Yup :D
Does sound really good though
"If anyone is a 'genius' for putting jacks in such a pedal in the only spot where they could physically fit, then I assume I too am a genius for correctly inserting my legs into my pants this morning." - candletears7 - TGP

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deafbutpicky
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Post by deafbutpicky »

Now take out the transistors and measure them for hfe and parasitic C and we're at the core :horsey:
Or consider the demo gear :blackeye

Sounds good though, another one on the list...
I'm using capacitors to replace my guitar effects and give more clarity to the sound.

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Post by IvIark »

They're unlikely to be hand picked for gain. The company that makes them in China quoted me $10 a piece for populated Muff boards if I buy at least 100 (including soldered pots like this) for a little sideline I was considering a couple of years ago. With those sort of margins they won't be sorting through them.
"If anyone is a 'genius' for putting jacks in such a pedal in the only spot where they could physically fit, then I assume I too am a genius for correctly inserting my legs into my pants this morning." - candletears7 - TGP

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Post by deafbutpicky »

It was meant as a joke, nevermind...
I'm using capacitors to replace my guitar effects and give more clarity to the sound.

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Post by IvIark »

I've been asked much less likely things (often), so sometimes it's hard to pick up on sarcasm with the written word. Even smilies don't give a clue any more when everyone uses them for everything :D ← ← (see)
"If anyone is a 'genius' for putting jacks in such a pedal in the only spot where they could physically fit, then I assume I too am a genius for correctly inserting my legs into my pants this morning." - candletears7 - TGP

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Post by IvIark »

The layout needed a small correction and has been shifted about a bit, so if you want to build from the layout get the latest version now
"If anyone is a 'genius' for putting jacks in such a pedal in the only spot where they could physically fit, then I assume I too am a genius for correctly inserting my legs into my pants this morning." - candletears7 - TGP

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tabbycat
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Completed builds: completed builds: shinei univox 6tr superfuzz with mods, vox repeater, earth sound research graphic fuzz, roland ad-50 double-beat fuzz, shinei fy-2 companion fuzz with mods, ampeg scrambler, fender blender, ep3 18v pre, dam meathead fuzz, coloursound inductorless wah, lpb1.
mods: joyo voodoo octave cap rotation, dan echo r10 mod, pb&j r10 mod, behringer vintage phaser true bypass mod, behringer sf300 superfuzz diode switch (germanium-silicon).
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Post by tabbycat »

IvIark wrote:I finally got round to doing a trace of the board...
many thanks indeed, mark. classy.

am thinking i might start my big muff adventure by modding out into freakout territory from this pedal as a base, rather than from a nyc standard, as it's so much 'there' already. great tones from a cheapy clone, and now you've given me a vero option if i feel up to starting from nothing. it's good here.
"be a good animal, true to your instincts" (d.h. lawrence).
"there is no excellent beauty that hath not some strangeness in the proportion" (francis bacon).
"ni dieu ni maître" (anarchist slogan).

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