Recent content by JohnnyCreepy

  1. JohnnyCreepy

    Transistor: proper continuity / fails hFE test

    Haven’t done any transistor based PPs, but I’ve messed with tubes. Would your circuit be tweakable with adjustable bias or bias balance as it’s done with tubes? If the old NPN is cooked I’d go replacing PNP and NPN sides with new transistors and adding a bias adjustment addon there. With tubes...
  2. JohnnyCreepy

    Transistor: proper continuity / fails hFE test

    Dunno if this helps, but while ago I cooked couple Ge transistor exceeding their max current limit with trimpot on FF circuit and after that my cheap component tester read cooked transistors as shorted/faulty component. Cannot recall if it was E or C tied to B, but nevertheless that gave a diode...
  3. JohnnyCreepy

    Vacuum Tubes

    Some E83CCs and couple 5751s bought within last two years. Haven’t really looked into manufacturing time, but there’s always a chance they date earlier.
  4. JohnnyCreepy

    Vacuum Tubes

    Couple months ago I bought NOS Telefunken 12AT7 from my local shop with ~20 coins and I know they’re reliable and test their tubes. Still it wasn’t good and had terrible microphonics. Got money back and they let me too keep the tube. Haven’t had guts to test it again, but maybe some day it find...
  5. JohnnyCreepy

    Vacuum Tubes

    PM’d.
  6. JohnnyCreepy

    Vacuum Tubes

    I have three leftovers of a quad. The fourth one gave up and made a good flash. Willing to trade those for some NOS ecc83 goods. Maybe we first need to wait this import/export toll thing figure itself out?
  7. JohnnyCreepy

    Keeley Psi Fuzz (PedalPCB Kinetic Fuzz)

    I’ll try to get on with it in next few days!
  8. JohnnyCreepy

    Keeley Psi Fuzz (PedalPCB Kinetic Fuzz)

    IMO Ionosphere sucked, is this more worth building? If it is, I’ll verify your layout within couple weeks.
  9. JohnnyCreepy

    What is a good “first pedal” for a bass player?

    Im both offended and amused at same time about the realization sludge/doom/stoner is the goth.
  10. JohnnyCreepy

    Rosamp SLO50 Soldano Clone Clean Channel Issue

    You’re good if the changes make you to play guitar more and current channel volume difference fits your needs better than stock circuit.
  11. JohnnyCreepy

    Rosamp SLO50 Soldano Clone Clean Channel Issue

    Have you tried jumping R17 with alligator clips if it brings Clean vol up? I’d start from there if there’s no cold solder spots or other problems you catch visually or with DMM. If jumping R17 works, maybe change Clean side switching circuit same as in OD side. Edit. hold your horses and do...
  12. JohnnyCreepy

    I could use another set of eyes and help with this idea (pickup simulator)

    Now it all starts to make sense as concept described at start was a bit hard to grasp. If it’s tone and vol only, why not go mechanical route first with sliding pots or rollers (like in keyboards) attached to regular pots?
  13. JohnnyCreepy

    I could use another set of eyes and help with this idea (pickup simulator)

    It’s the reason I use Ge-FF as first pedal in board. Why it isn’t possible? What you’re doing seems complicated and I wonder wouldn’t it just be enough to include (AMZ) pickup simulator w/ transformer or real pickup coil into the fuzz box circuit or before it like others do it and call it a day...
  14. JohnnyCreepy

    I could use another set of eyes and help with this idea (pickup simulator)

    Im reading this over and over again, but cannot understand what is a midi controlled pickup simulator, why you need one and what you think it’s gonna solve. :unsure:
  15. JohnnyCreepy

    How does this tone control work?

    To say what to look at, please define what kind of change you’re aiming to? Less brite or more everything? That’s tone circuit in the NFB partion of an operational amplifier stage. R12 ratio to two 3.3Ks parallel with pot between sets gain and pot setting also affects low freq content passing...
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