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.

Friday, May 29, 2015

Run Off Groove Condor Cab Sim

Part of the last request included a cab simulator to run the headphone amp through. The ROG Condor is a great cab sim and has a fairly low parts count. It uses a JFET amplifier at the input, boosting the signal to drive the following 3 filters (Bridged-T notch filter, High-pass filter, and Low-pass filter). Much more info on the circuit can be found here, as well as a few mods. J201 apparently sounds the best for Q1, but similar DSG pinout JFETs will also work. Any dual opamps can be used for the 2 ICs, so socket and try the usual candidates (TL072, JRC4558, etc).


at
Labels: , ,

20 comments:

  1. wainer.said@gmail.comJuly 1, 2016 at 5:05 PM

    layout tested , works fine , gorgeous pedal, would like to see after the modifications to Marshal this layout. thank you

    ReplyDelete
  2. Bazin GuitarsJuly 12, 2017 at 2:41 AM

    hey,
    How much should be the glow on the transistor?
    How much value to expose on the variable

    ReplyDelete
  3. AgustínFebruary 14, 2018 at 11:14 PM

    This pedal can replace an amp
    Can i use this in a live session and go direct to PA?

    ReplyDelete
    Replies
    1. Effects LayoutsFebruary 15, 2018 at 10:28 AM

      You'd still need something like a direct box to go to the PA, but theoretically yes.

      Delete
  4. cacopandaApril 10, 2018 at 5:46 PM

    can I use a 10kB on the output?

    ReplyDelete
    Replies
    1. Effects LayoutsApril 10, 2018 at 9:59 PM

      Yep. Sweep might be a little off but it’ll still work

      Delete
    2. cacopandaApril 11, 2018 at 4:52 AM

      Which comes at the end of the chain - this or looper?

      Delete
  5. MetalheadApril 13, 2018 at 12:07 AM

    Can i add a di box after this cabsim?
    (Guitar -> cabsim -> di box)

    ReplyDelete
  6. PauloJuly 4, 2018 at 8:55 PM

    This comment has been removed by the author.

    ReplyDelete
  7. PauloJuly 4, 2018 at 8:56 PM

    This comment has been removed by the author.

    ReplyDelete
  8. UnknownOctober 22, 2018 at 8:54 PM

    do you have audio sample?

    ReplyDelete
  9. UnknownDecember 5, 2018 at 7:10 PM

    How's it going, bros?
    I think there's a 1nF cap missing on the non inverting input of the last op amp. It was supposed to connect to ground from there, according to the schematic.
    Thanks for the layout!

    ReplyDelete
    Replies
    1. CroustanouneJanuary 15, 2020 at 4:09 PM

      You're absolutely right. There's indeed a 1nf cap missing from pin 5 to ground on the 2nd op amp. It doesn't work properly otherwise (there's an unbearable wall of noises without this cap).

      Delete
  10. Diego JorgeDecember 31, 2018 at 10:51 AM

    You're right!

    ReplyDelete
  11. Ricco SeixasSeptember 3, 2020 at 9:12 PM

    the voltage is 4.5 volts for transistors? can I exchange the trim for a 22k to reduce it to 4.5 volts?

    ReplyDelete
  12. SlackMarch 6, 2021 at 2:28 AM

    so you run the cab sim into the headphone amp? howd that turn out? should you leave the volume put on the condor?

    ReplyDelete

Subscribe to: Post Comments (Atom)