Dimension P Chorus

Had a request for this one and didn't feel like laying out another overdrive. So here you go. It's a chorus using a pair of PT2399 design to emulate the Boss Dimension C designed by Distorque. Original design thread here, schematic here for reference. I've laid it out for board mounted pots and will fit in a 125B with top mounted jacks.

Caline Mark 4

Got a request for this and an interesting circuit. Apparently it's a simplified version of the MI Audio Tube Zone. Should be a good jumping off point for modding. Schematic on FSB.

Menatone Pig

Came across this one and it's an interesting JFET-based OD with active bass and treble controls. It's apparently based on a late-60s Marshall 200 amp. Drew up the schematic for reference.

I believe the originals run off a 9v supply, but newer ones have a voltage doubler internally to run off 18v. Since I know there are different preferences when it comes to those, so I left it off the board. I realized after I drew all this up I probably should have included trimmers for biasing the JFETs, so you may want to socket the resistors going from voltage to the drain of Q1, Q3, and Q4-6. Though if you're using in-spec J201s (I highly suggest the SMD version and conversion boards) the stock values will probably work fine. YMMV Pots are board mounted and will fit nicely in a 125B.

Function F(x) Clusterfuzz

This Fuzz Friday I present you the Clusterfuzz from good dudes at Function F(x). It's a great sounding fuzz and really versatile. You might be able to squeeze this into a 125B if you can squeeze the rotary and toggle switches under the board. Otherwise a 1590BB like the original is probably the way to go.

Mini BassDrive

This is an adaption of the Fulltone Bassdrive without the boost footswitch, allowing for a smaller enclosure. I got the idea from a comment by Simão on the Fulldrive 2 post, and I though it could prove useful for my fellow bassists. Like the Fulldrive/Bassdrive, it's modded Tube Screamer with clipping and voicing options with the 2 toggle switches. Based on this schematic with the boost footswitch and 2nd gain pot removed.

Baja Optical Limiter

Here's one of Bajaman's non-amp emulating circuits, the Optical Limiter. It's based on the Demeter Compulator, but is not a compressor but a limiter. What's the difference?

The ratio is the main difference between a compressor and a limiter. A compressor has a low ratio that turns down SOME of the volume when it goes above the threshold. A limiter has a huge ratio that turns down ALL of the volume that goes above the threshold. (from Musician on a Mission)

Here's the schematic for reference. It's designed as a buffered bypass pedal, with the input jack going to the In pad on the board, and a third of a a 3PDT footswitch selecting between the buffered out and effect out. The off board LED pulses with the signal but probably isn't going to be great as an on/off indicator. Just use another third of the 3PDT to make/break the connection between the LED- pad and the cathode of the LED. And then use the final third of the footswitch to wire an on/off indicator LED as you normally would. (At least I think that's what Bajaman had in mind...) Also, the LDR should have 5k light resistance, 500k dark resistance (a GL5516 should work). Oh, and I added an extra pad so GSD pinout JFETs (J201, 2N5457, etc.) can be used in place of the 2SK117.

Wampler Pantheon

The Pantheon is Brian Wampler's take on the classic Bluesbreaker circuit. It adds some of the mods from the King of Tone as well as a Baxendall tone stack for the Bass control (the would be treble control of the Baxendall is fixed) and a gain switch to set different min/max settings of the Drive pot. Fits in a 125B like the original. If you're not feeling like etching or grabbing the perfboard, there are boards available on the store.