Carl Martin
Carl Martin Crush Zone
A quite interesting one. It is basically an old Tim Escobedo circuit (Punch in the Face silicon/FET fuzz face variant) sandwished between two op amp gainstages. The input cap is only at 220pF, try 4,7nF-10nF to fatten things up a bit. A trimpot is added for easy biasing for the J FET. Stock fixed value … Read more
Carl Martin Crush Zone
Here’s an interesting distortion from Carl Martin. It’s similar to an Escobedo Punch-in-the-Face between 2 opamp stages. Board mounted pots and will fit nicely in a 1590B. FSB schematic here for reference.
Carl Martin Plexi-Tone
This is probably the biggest Marshall-in-a-box pedal out there (footprint-wise anyway). Originals use a +/- 12v supply with a transformer internally. I modified the power section with a +/-18v charge pump and will run off a normal +9v power supply. This saves room so you can use a smaller enclosure and gives more headroom to the effect. It … Read more
Carl Martin Crush Zone
Here is a simple distortion pedal by Carl Martin. Original FSB thread and schematic available here.
THAT Jam Compressor
Here is a DIY project similar to the Carl Martin Compressor Limiter. There are 2 layouts: a large one that works at 9V and a smaller one where you need to decide a way to feed +/- 12V to the circuit (just a charge pump with regulators wouldn’t work with this circuit). You should read … Read more
Carl Martin Rock Drive
The mellower little brother of CM Heavy Drive. Original units share the PCB with each other, but there are number of differences on the circuits.