Tools, Tones and Toys for Guitarists
Today’s layout is the EQD Plumes. It’s based on the Tube Screamer but with a load of tweaks, including the usual BJT buffers replaced with op amp buffers, selectable clipping, and a charge pump to provide a bipolar supply. Should fit nicely in a 1590B. Here’s the schematic as requested:
Here’s a pretty simple drive that everyone says sounds amazing. Original units had mojo parts and point to point wiring. Should fit nicely in a 1590B.
Here’s a pretty interesting lower gain overdrive. There’s a an opamp gain stage with soft clipping going into a JFET stage that pushes a modified BMP tone stack, followed by a BJT output buffer. One of the diodes in the opamp stage is unknown, so socket and experiment. I also took a few liberties from … Read more
Got a request for this one for Fuzz Friday. Fairly simple fuzz + boost box. Originals used PNP silicon transistors, but you can use NPNs just as well. The perf side below reflects the original’s positive ground and the etch side shows daisy-chain-able negative ground. If you want to put 2 footswitches in a 1590B … Read more
I’ve held off in laying this one out just for the name alone (it was banned from Reverb for this very reason), but the circuit is fairly interesting so it was time. It features a MOSFET buffer into a pretty standard opamp gain stage with LED clipping into a MOSFET gain stage. Schematic and discussion … Read more
Apparently it’s tube week. Here’s the Tube Driver made famous by David Gilmour. It uses a 12AX7 which is pushed by a dual opamp followed by a Fender-style tone stack. I kept the power section from John K’s version of the Blue Tube. Fits easily in a 1590BB. Here’s the schematic for reference.
Came across John K’s vero of this circuit with a few mods (Mid pot, bipolar charge pump) and figured we needed a layout for it as well. Runs on 9-12v. Pots are all board mounted with the tube off board. Here’s John’s original layout.
Happy Fuzz Friday everyone! Had a request for this one. It’s basically a Foxx Tone Machine with some value changes and a couple additions, namely a switch to shift the range of the tone control and the octave switch is a footswitch. Here’s the schematic for reference.
Always need more bass effects, right? This was one of the first bass ODs to have a clean blend. Should be an easy fit in a 1590B. Here’s the schematic for reference.
The Diablo is a modified BSIAB circuit and the Diablo+ version has an added boost at the output that’s independent from the main overdrive circuit. I’ve laid it out for a 125B with top mounted jacks for a nice small footprint. Originals have a switch to run at 9 or 18 volts which I’ve left … Read more