Montarbo - Sinfhoton ( Fuzz )
- sinner
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Sure it helps bro, thanks
I was hoping to see SINPHOTON_schem2.jpg in better (bigger) quality, but this what I have should be ok
I was hoping to see SINPHOTON_schem2.jpg in better (bigger) quality, but this what I have should be ok
- sinner
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Thanks, you're my hero. So... We have 3 schematics in this topic and they're all different. Basic topology is the same, but some caps and resistor value differs. I bet they're all good, revisions and versions during production perhaps? But could you point me the best sounding one?
- sinner
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I've took factory schemo and did perf layout similar to stock one. There is not much gutshots on the web, I was limited to one only, but I think I nail it quite nice
- LucifersTrip
- Resistor Ronker
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....was going to do a build report, but there didn't seem to be much interest at the time...
I did a bunch of tweaking and the only way this thing fired up for me was with high gain transistors and a bunch of resistor changes. Here's my final version with voltage readings:
I did a bunch of tweaking and the only way this thing fired up for me was with high gain transistors and a bunch of resistor changes. Here's my final version with voltage readings:
Yeah that would be the best thing to do if you want more bite to the sound. I really like this fuzz, very good for fat power chords and its very quiet, it kinda have this noise gate quality. My russian BMP clone got a rivalSolidhex wrote:Remove the 100K in parallel with the first set of clipping diodes for more fuzz...
Don't recreate - create!
(exept when it comes to puttin' Mel Schacher in a box)
I breadboarded this and fell in love. It's the fat fuzzy characteristics of a Muff, but there is better string clarity and chords sound great on it. It also cleans up VERY well with the guitar's volume knob. I also like the very slight differences in the diode pairs' configurations, from the Muff's.
I built one on terminal strips, but still wanted a small enclosure, so I came up with a weird method. Definitely gotta build in layers!
I built one on terminal strips, but still wanted a small enclosure, so I came up with a weird method. Definitely gotta build in layers!
- LucifersTrip
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very cool...and looks great!sunburnedgoat wrote:I breadboarded this and fell in love.
did you make any changes? transistors used? collector voltage on Q2?
Ahh, yes. The good stuff.
Q1 - B: .6, C: 1.96
Q2 - B: .58, C: 5.25
Mods: I used 10uf electrolytics in place of the 2.2. I removed the 100k parallel resistor in the first diode set, as recommended. Mine is the 2-knob version. I added a switchable .1uf cap to ground on the input, which opens it up a little more - a little bit of sparkle, subtle increase in vol and compression.
Q1 - B: .6, C: 1.96
Q2 - B: .58, C: 5.25
Mods: I used 10uf electrolytics in place of the 2.2. I removed the 100k parallel resistor in the first diode set, as recommended. Mine is the 2-knob version. I added a switchable .1uf cap to ground on the input, which opens it up a little more - a little bit of sparkle, subtle increase in vol and compression.
Oh... and 2n5089. Both read about 580 hfe. Mine fired up immediately when I first put it on the board, and I didn't have to modify any resistor values in order to get it to fire up, as reported previously. It's a mean machine. Loud and dirty.
- LucifersTrip
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thanx alot...I appreciate it. It's always cool to have other working voltages.sunburnedgoat wrote:Ahh, yes. The good stuff.
Q1 - B: .6, C: 1.96
Q2 - B: .58, C: 5.25
Mods: I used 10uf electrolytics in place of the 2.2. I removed the 100k parallel resistor in the first diode set, as recommended. Mine is the 2-knob version. I added a switchable .1uf cap to ground on the input, which opens it up a little more - a little bit of sparkle, subtle increase in vol and compression.
Did you try to move Q2C voltage up & down to see where you liked it best? I definitely wouldn't call what I got "dirty". I'd call it fat, chunky & smooth....with excellent sustain.
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I wonder if MPSA 13, and MPSA 14 transistors will work in this circuit, I think I've got some stashed away somewhere, HFE is something like 10,000 or so....
Genius is not all about 99% perspiration, and 1% inspiration - sometimes the solution is staring you right in the face.-Frequencycentral.
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- my favorite amplifier: Companion Psychedelic Machine
- Completed builds: Mosrite Fuzzrite (Si), Mosrite Fuzzrite (Ge)[2], Get Lo-Fi Fuzz, Fuzz Face (Ge) [2], Fuzz Face (Si) [3], Mos-Face, Vox Tone Bender, Kay Tremolo, Os Mutantes Fuzz [2], Psychedelic Fuzz, Smokey Amp, Sunn Buzz, Jen Fuzz, Fancy Fuzzbox, Muff Fuzz (op amp) [2], Buzz Box, Fuzz King, Rangemaster [5], Maestro FZ - 2/3, Ruby Amp, Orpheum Fuzz (Ge) [4], Great Destroyer, Schizo, Carlsbro Suzz, Shin-Ei Companion Fuzz (si), DOD 250 Gray [2], Super Dirt Fuzz, Fuzz Factory, Jordan Boss Tone, Sam Ash Fuzzz Boxx, Heathkit TA-28 Fuzz, Olson New Sound Fuzz, LRE Fuzz Sound, Green Ringer, Vox Super Beatle (Ge), Colorsound One Knob (Ge), Demon Buzzz [2], Demon Wasp v1, Demon Wasp v2, Super Hard-On, Bazz Fuss, Burns Buzzaround [2], Selmer Buzztone, Shin-Ei Companion Fuzz (Ge), Fuzz Face/FY-2 (Ge), Zonk Machine, Univox Squarewave, Demon Fuzzz, Mosrite Fuzzrite BG-500/1000 (Ge), Univox Superfuzz, Marshall Supa Fuzz, Demon Monster, AA Overdrive/ Retro Fuzz, Tone Bender MKII, Psychtar, Jordan Vica Vibe, etc...
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I think I actually tried that and they didn't...you would have to re-design the circuit for darlington. I just went with the highest hfe I had, MPSA18DrNomis wrote:I wonder if MPSA 13, and MPSA 14 transistors will work in this circuit, I think I've got some stashed away somewhere, HFE is something like 10,000 or so....
you should try em, anyway. my memory could be off.
- johnk
- Resistor Ronker
I just finished drawing up, etched and built a PCB for it and it sounds awesome.
I used MSPA18 transistors but had to adjust the two 10K collector resistors to get the transistors to sound good. with the stock 10K's I was only getting 1.6V on the collectors and although the circuit worked, it sounded horrible and very gated.
I replaced them 2.2K's and get 3.7V and it's smooth and silky.
I also added a gain control so I can lower the amount of fuzz if I want to.
here's the PCB layout:
I used MSPA18 transistors but had to adjust the two 10K collector resistors to get the transistors to sound good. with the stock 10K's I was only getting 1.6V on the collectors and although the circuit worked, it sounded horrible and very gated.
I replaced them 2.2K's and get 3.7V and it's smooth and silky.
I also added a gain control so I can lower the amount of fuzz if I want to.
here's the PCB layout: