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  1. jubal81

    Fun with JFETs and servos

    Chuck's thread on the Brownout OD finally motivated me to do some breadboarding with JEFTs and opamp servos for biasing. So far, things are looking pretty neat. I put together a couple stages of the Wampler Black 65 for testing and sure enough, I'm able to swap in and out JFETs willy-nilly and...
  2. jubal81

    OSHcut: Costom enclosures, chassis?

    OSH has a new laser metal cutting service that looks pretty interesting. You send them a vector file and they custom cut anything from sheet metal. You'd have to bend it yourself, but I can see possibilities for custom pedal enclosures, amp chassis or even pedal boards. Edit: Looks like they do...
  3. jubal81

    Spitballin': Eurorack case pedalboard

    I've had this idea kicking around in my head for a couple years that just won't leave me alone, but I can't wrap my head around exactly how to get it right. Seems to me that the right Eurorack case would be a perfect pedalboard platform for a DIYer. Instead of a full-on pedal for every build...
  4. jubal81

    Square hole strategy

    Still need to do my EQ pedal with sliders and wondering if there's any suggestions for tools for cutting out big square holes in the cast aluminum boxes.
  5. jubal81

    Benson Ge Fuzz

    Supposed to have some kind of temp/bias/servo thing and a pickup simulator. Sounds like some interesting stuff going on.
  6. jubal81

    Ming the Merciless - Phase 2

    Finally got around to finishing this one today when I had an inspiration for a LDR cap. Took a pot dust cap, covered it with aluminum foil and then some white duct tape i had around. Then I took another strip of foil and applied the tape to both sides, like a duct tape-aluminum foil sandwich...
  7. jubal81

    The MacGuffin - A Dumble ODS preamp with submini tubes

    Wife working from home started me on a silent rig quest that led me this and now I'm in headphone heaven. It's a full Dumble ODS preamp with Russian 6n17b submini tubes in a 1590XX enclosure. I used grill cloth to cover the heat vent ports for the tubes. Well-worn 555 SMPS with about 140V at...
  8. jubal81

    Double FV-1 Reverb

    This turned out to be one of the most challenging builds I've done in a while because of the way I wanted everything to fit together. The idea is one side for subtle, always-on reverb and using channel-switching mode on the intelligent relay bypass to go to another, more intense reverb. Left...
  9. jubal81

    Ubu Roi (Modded KOT)

    This guy is a KOT with all the controls on the top. I used a 2P4T rotary to replace the dip switches for all 4 clipping options and included a toggle for normal/HiGain modes. I also used Rail-to-rail opamps and added another inverting stage to have more output on tap (like morning glory) and...
  10. jubal81

    Rose of Tralee (modded Klone)

    Made my own Klone version. True bypass. Used rail-to-rail opamps and got rid of the charge pump. Use an 18V plug from my TruTone power supply. The OD/Dist adds feedback clippers on the gain opamp and the other switch toggles Ge, Si and N2 molecular junction clippers.
  11. jubal81

    Whiskey River (Complex OD)

    Mentioned in another thread, but this is my favorite MIAB among all I've ever built. Sounds every bit as good as the demos. Only substitute I made was using TLC2272 because I didn't have any 072s on hand. Sounded so good, I just left them in there. Just have to remember not to plug in 18V...
  12. jubal81

    Radium and Spacialist control layout Qs

    I'm working on the art for a dual reverb with the Radium and Spacialist and I'm just not 100% on the controls and I'd appreciate a confirmation, if possible. The other thing I'm not 100% on is the switch on the Radium. I don't want to use the tremolo modes, and it looks like I just need to...
  13. jubal81

    The Pinche Cabron - an AS3046D Superfuzz

    I went over to Smallbear's site and noticed a new IC he's stocking on the front page. It's the AS3046D, which is 5 BJT, NPN transistors, with two of them a matched, differential pair. Since reading Chuck's transistor matching thread the other day, I've had the Superfuzz on the brain, since I've...
  14. jubal81

    Hydra is Niiice

    Belle Epoch going on Reverb. Love the Hydra. A few notes: squeezed in film caps and used PPCB relay switch. 'Pro' momentary switches from LMS feel great.
  15. jubal81

    Hydra 15pF cap

    Forgot the 15pF on my Mouser order and I'm wondering how critical the exact value is. Schematic isn't on the build doc.
  16. jubal81

    The Bollocks - a King Midas

    Found this one almost ridiculously dark. Changed C3 to 10n and C4 to 680n and it really opened up. Rock'n'Roll machine. Reverse etched faceplate and PPCB relay switching (really impressive - no clicks). Used a momentary switch marketed to DIY vape builders. We'll see how it holds up.
  17. jubal81

    Callahan Royale (Paragon)

    Buddy requested I build this for him. Hammond textured enclosure Reverse-etched faceplate Diode options on a 2X4 switch (Mode) External Presence Lots of wiring under that PCB (Used the long pin, right-angle pots to boost the PCB up and over the wiring)
  18. jubal81

    Molten Slag (Aldrin + C-buffer)

    Made this for a friend of mine. Aldrin with a few tweaks and C-buffer bypass PCB. Vintage BC109Cs and sounds amazing.