Tools, Tones and Toys for Guitarists
I used a quad opamp to keep the size down, so this should fit in a 1590B. Solo Switch is a second stomp to give you a volume boost when soloing (funnily enough) and only a SPDT stomp is required for this, but use a DPDT if you want LED indication showing the “channel” you … Read more
Incorporating couple of cool ideas, here’ one from the man, Pink Jimi Photon. Note that the master volume control is optional and anything smaller than 1M will probably hurt the output level. The level should be within reasonable limits without it. Here’s the original description: Positive it’s been done a gazillion times before. but one … Read more
Check out Tonemachines blog post for this 1969 japanese beauty. Apparently, this is exactly the same circuit that can be found inside Apollo Fuzz and Crestwood Fuzz boxes… The circuit uses “positive ground” with PNP Ge transistors. Mind the power supply or use a charge pump. Now verified. Different transistor models/individuals will affect the output … Read more
You bassists on here are pretty speedy builders, so who will build this first? :o) At 22 x 14 this will fit in a 1590B if you file the sides down a bit, but with it being a two stomp effect you’ll probably want to put it in a 1590BB or at least a 125B … Read more
Here’s something cool. The design reminds me of something else a lot – i think some of you may want to take the diodes on a switch with red 3mm LEDs 🙂 Original unit has NEC C157C metal can IC in it, but NEC’s own cross reference guide says that this particular IC has been … Read more
Doron! I think you meant this one and not the MSL 😛 To add a few words, the clipping diodes are placed neatly where you can easily take them on the switch and have your way with them. I would probably go with three position two pole switch and have the middle as diode lift, … Read more
Got an early 90s unit recently, the chinese reissue with JRC4558 chip. I’m still really surprised how good it sounds. So i do think this is very neglected and underrated pedal. I’ve added polarity protection diode and pulldown resistor for the input. The chip is stated as KA4558 in the italian reissue schematic i found … Read more
Edit 31.7.2016 – There was still one crucial error on the layout, which made the board defunct. Fixed and tweaked a few things around to accomodate the polarity protection etc. *Should* finally be safe to build.
