ETI Fuzztone
Apparently there was some slight issues with the schematic above, namely the R6 was not correctly placed – that had been corrected in the next ETI issue back in 1993. The layout seems correct to me.. 🙂
Distortion
Runoffgroove Umble
As. Requested. Info from ROG: There has always been much talk about the mystical hand-built amps that a particular man sells for around $10,000 each. Some claim these are the greatest amplifiers known to man, while others maintain it’s all hype. The runoffgroove.com team doesn’t know for sure, because neither of us can plunk down 10 … Read more
Vox/Guyatone Zoom Distortion Box
This design is pretty close to OD250/Dist+, but i thought it should be added anyway, as there are some slight differences. Funny thing is that the same circuit was marketed and sold as both Vox Distortion and Guyatone Zoom Distortion Box. From what i can tell from the demo, it’s really nice sounding thing. These … Read more
Chaos Distortion
Geiri verified this one and made a cool demo! On his build, the gain pot is wired in reverse – that has been fixed in the layout below. Mark Hammer’s Chaos Distortion is turning 10. From Mark Hammer: A friend’s son wanted a heavy-metal kind of thing so I thought I’d try and do something … Read more
Ibanez TM5 – Thrashmetal
Continuing with another Soundtank – Now it is time to grab your baseball cap, turn the visor up and write “NOT!” on it. It is a massive board (still fits comfortably in 1590B) but it sounds really sweet. With enough treble and gain it made even me, the old punk to play thrash. Actually. I … Read more
Ibanez CD5 – Cyberdrive
I’m not liking the asymmetry of the layout 🙁 However, i believe it won’t look that bad once it’s populated on to the board. Original unit has 2SC1015 transistor, but i made this layout to accomodate more common pinouts. That transistor is so close to the specs of 2N3906 that i don’t think that’ll make … Read more
Runoffgroove “Big Grace”
Big Daddy and Grace circuits have this at the end of their document page: The two circuits are very similar and it may be possible to use a switching system to alternate between the buffer and the gain stage versions. (ROG) Now did i really have a choice? 🙂 Instead of using some monstrous 4PDT switch, … Read more
Runoffgroove Big Daddy
Continuing Grace Overdrive article at ROG: During the testing of this circuit design (meaning the Grace Overdrive), the thought occurred to try a Jfet gain stage before the 386, instead of the buffer. The impedance would still be high and the 386 would see more signal and clip harder. The result is a pleasing grind and … Read more
Supa Nova
Info from circuit designer J. Nagy: The Supa Nova is a very low to pretty high gain, tube-ish, distortion pedal that relies on a MOSFET (BS170) to overdrive two JFETs (J201). The tone controls are designed to provide adjustment to the middle and upper frequencies. Voltage at the drains of Q2 and Q3 should be about 5.4 and 4.7, … Read more
Ibanez BN5 – Black Noise
Lethal, rough-edged industrial distortion at its most extreme-the sound of a small amp overdriven way past the limits. Our heaviest, most intense, and just plain loudest distortion pedal.