Another Marshall-in-a-box, the Ms. Foxy Brown uses 3 J201s and feels a lot like an older Run Off Groove design (though it's not). As per usual, you'll need to bias the J201s to about 4.5v and then fine tune as needed. Should fit easily in a 1590B. Schematic for reference.
This is a library of perfboard and single-sided PCB effect layouts for guitar and bass. I'm not an electrical engineer by any stretch of the imagination, just a DIY'er who likes drawing layouts. It is meant for the hobbyist (so commercial use of any of these layout is not allowed without permission) and as a way to give back to the online DIY community.
Showing posts with label Menatone. Show all posts
Showing posts with label Menatone. Show all posts
Tuesday, March 5, 2019
Tuesday, December 11, 2018
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.
Monday, October 24, 2016
Menatone None More Black
Here's the None More Black from Menatone. It uses cascading JFET stages to produce a high gain distortion tones of the 80s all the way to modern metal tones. There are apparently some versions with and without a charge pump to run at 18v off a 9v supply. I had room for the charge pump, so I included it.
Wednesday, October 12, 2016
Menatone King of the Britains
Here's a Menatone design that emulates a Marshall JCM800. Like many Menatone circuits, the King of the Britains has had several iterations over the years. For this layout I went with the 6-knob version (and is essentially the same as the Electrictabs JCM800 emulator). I've laid it out specifically for a 125B enclosure with all the pots board mounted. Here's the schematic for reference. I would have liked to included trimmers for biasing the J201s, but there just wasn't enough room. So it's probably a good idea to socket the resistors feeding the drains and reference the schematic for voltages.
Wednesday, August 31, 2016
Menatone Blue Collar
Here's an oldie but a goodie from Menatone. The Blue Collar was released around the same time as the Red Snapper and is more compressed and focused in comparison. It's also based around the Tube Screamer without the input buffers and with several mods. This layout reflects a newer version of the Blue Collar, but the older one can be built on the same board. Just increase the input cap to 100n, omit the 56p cap from pin 5 to ground, lower the output cap to 100n, and use an A250k pot for the Volume control. Here's the schematic for reference.
Wednesday, August 24, 2016
Menatone Red Snapper
Gotten a few requests for this one. It's a based on the Tube Screamer, but without the input and output buffers and a modified tone section. I've laid it out for board mounted pots and the electrolytic caps are folded on their sides.
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