Mad Professor - Stone Grey Distortion [traced]
- roseblood11
- Tube Twister
A friend gave me one of these pedals today. First glance: Based on CD4049ube, two 2n3819 Jfet's, one opamp. I´ll retrace it next weekend, I guess it will be easy as most traces are visible.
Sound is good, but not overwhelming...
Sound is good, but not overwhelming...
- roseblood11
- Tube Twister
Parts values:
r1: 4,7k
r2: 14,7k
r3: 470k
r4: 470k
r5: 200k
r6: 1m
r7: 1m
r8: 1m
r9: 1m
r10: 1k
r11: 100R carbon
r12: 10k
c1: 47n
c2: 47nF
c3: 100pF ceramic
c4: 100pF
c5: 100pF
c6: 15pF
c7: 2,2nF
c8: 100nF
c9: 10nF
c10: 100µF
c11: 4,7µF
c12: 22nF
d1: Zener, maybe 5,1V
d2: 1n4007
u1: tl051
u2: cd4069ube
t1: 2n3819
t2: 2n3819
p1 (distortion): 1m log (measures almost 1,2m), ("10A1M")
p2 (tone): 50k log
p3 (volume): 50k log
r1: 4,7k
r2: 14,7k
r3: 470k
r4: 470k
r5: 200k
r6: 1m
r7: 1m
r8: 1m
r9: 1m
r10: 1k
r11: 100R carbon
r12: 10k
c1: 47n
c2: 47nF
c3: 100pF ceramic
c4: 100pF
c5: 100pF
c6: 15pF
c7: 2,2nF
c8: 100nF
c9: 10nF
c10: 100µF
c11: 4,7µF
c12: 22nF
d1: Zener, maybe 5,1V
d2: 1n4007
u1: tl051
u2: cd4069ube
t1: 2n3819
t2: 2n3819
p1 (distortion): 1m log (measures almost 1,2m), ("10A1M")
p2 (tone): 50k log
p3 (volume): 50k log
- ShortScaleMike
- Resistor Ronker
Information
Excited about this one!
Information
I've played one yesterday
I like it a lot, but it was very bright.
While playing through bright clean channel I had to turne Tone knob at least down to 9 o'clock.
Untill 3 o'clock at the Gain knob it was becomming more gainy, but still dynamic.
Turning gain more didn't really brought new gain, but mostly compression.
SGD has definitely my interest
I like it a lot, but it was very bright.
While playing through bright clean channel I had to turne Tone knob at least down to 9 o'clock.
Untill 3 o'clock at the Gain knob it was becomming more gainy, but still dynamic.
Turning gain more didn't really brought new gain, but mostly compression.
SGD has definitely my interest
- ShortScaleMike
- Resistor Ronker
Information
Fast work! I was going to offer to do a vero layout but it seems you've got it all under control - nice work.
- WhiteKeyHole
- Cap Cooler
I wonder by how much, if at all, the Bearfoot Model H differs.
- roseblood11
- Tube Twister
Schematic and veroboard layout are VERIFIED!
I used a 1n5817 schottky for D2 (because of the lower voltage drop) and a OPA134 instead of the TL051. There´s only a subtile difference in sound compared to the original pedal, but I definitely prefer the clone.
I used a 1n5817 schottky for D2 (because of the lower voltage drop) and a OPA134 instead of the TL051. There´s only a subtile difference in sound compared to the original pedal, but I definitely prefer the clone.
Hi! just to report that i've build that layout and i would say that it sounds marvelous! just like the video. but i used tl071 instead of tl051.. i like this much better than bjf DRD.. its worth it!
- DimebuGG
- Solder Soldier
Information
PCB...
- Attachments
-
- Source Gate Drain-stortion.pdf
- (51.13 KiB) Downloaded 1092 times
Finch: A witty saying proves nothing - Voltaire
Stifler: Suck my dick - Ron Jeremy
Stifler: Suck my dick - Ron Jeremy
- euronymous0001
- Breadboard Brother
roseblood11 did you try to sub the fet with other types (e.g. J201, 2N5457 and/or MPF102 )
euronymous0001 wrote:roseblood11 did you try to sub the fet with other types (e.g. J201, 2N5457 and/or MPF102 )
good result also with the type of BF245A
R4=470k.DimebuGG wrote:PCB...
- Kaos
- Breadboard Brother
Oh yeah!
You guys are my personal heroes of the day!
I just saw a demo( of the pedal and instantly wanted it. That'll beef up my Fender Supersonic.
Cheers
You guys are my personal heroes of the day!
I just saw a demo( of the pedal and instantly wanted it. That'll beef up my Fender Supersonic.
Cheers
The camel is a horse designed by a committee that never met.