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Tuesday, January 13, 2015

Lovepedal Eternity

The Eternity Overdrive is kind of like the Big Muff of Lovepedal in that it has a ton of different versions (there are over 10 I believe), but it's basically a Tube Screamer without the input/output buffers. I've drawn up 2 versions here, the Black and the Burst. The main difference between the 2 is the clipping stage. The Black version has an asymmetrical clipping stage, while the Burst has a 4 diode symmetrical clipping stage. The other differences are just minor value changes.

I've added polarity protection and put the LED resistor on the board. I've also added a 47pf cap in parallel with the clipping diodes in the Burst version that MadBean added in his Drunken Dragon version of the Eternity. Sean from Lovepedal says that the secret behind the Eternity is a LM1458, but any dual op-amp should work fine (JRC4558, NE5532, TL072, etc.). They'll just sound different, so adjust to taste.




Board size on both layouts is 2 x 1.4 inches or 51 x 35.5 mm.

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22 comments:

  1. AnonymousApril 27, 2015 at 8:25 AM

    you can mark this as verified, built it and it works and sound good (did the black)
    only thing is you have to reverse legs 1 and 3 of the gain and volume pots for them to work the right way.

    ReplyDelete
  2. AnonymousApril 27, 2015 at 10:07 AM

    just did the burst version too, more range everywhere (drive, tone and volume)
    think ill blend the two together as i prefer asym clipping...or ill try mosfets in there just for giggles.

    me thinks im ultra addicted to solder fumes :-p

    ReplyDelete
  3. UnknownSeptember 15, 2015 at 11:11 AM

    do you have a Lovepedal Kanji Eternity ?

    ReplyDelete
    Replies
    1. dtgehringSeptember 16, 2015 at 10:20 AM

      If you can find a schematic of that version I can post a layout for it.

      Delete
  4. fredOctober 4, 2015 at 4:16 PM

    Hi, I built this pedal, my pedal working good but make noise like hum when start roll the gain up. can some one help me if had the same problem.

    ReplyDelete
    Replies
    1. dtgehringOctober 5, 2015 at 9:33 AM

      Have you boxed it up? You might be getting interference if it's not shielded. Otherwise try increasing the power filter cap (47µ on the right).

      Delete
    2. fredOctober 5, 2015 at 2:03 PM

      ok, let my try, If it does not work. I gonna start to build other new. thanks.

      Delete
  5. fredDecember 22, 2015 at 1:53 AM

    in the black version 55nf is too hard to get, I can't find this capacitor. can I use other one?

    ReplyDelete
  6. Effects LayoutsDecember 22, 2015 at 11:52 AM

    A 47n is well within tolerances. I'd just go with what you have that's close.

    ReplyDelete
  7. ozzyMarch 15, 2016 at 12:44 PM

    Does anyone have a schematic for the Roadhouse variant?

    ReplyDelete
  8. MikebotJanuary 29, 2017 at 6:13 PM

    I recently built the black version using this layout. I noticed that with right angle pots mounted from the solder side of the board that the volume and drive knobs work as intended but the tone knob seems to work backwards (seemingly the opposite problem to that of modeffected - perhaps he mounted the pots from the component side?).

    ReplyDelete
  9. Ramón HerverJuly 11, 2017 at 2:18 AM

    how is the order of the pots lugs??

    ReplyDelete
  10. Ramón HerverJuly 11, 2017 at 2:30 AM

    Sorry, do you have the drilling template?? Thanks bro!!

    ReplyDelete
  11. EdoJuly 11, 2017 at 10:00 PM

    Same with mikebot, the tone pot is wired backwards.

    ReplyDelete
    Replies
    1. Effects LayoutsJuly 14, 2017 at 11:13 PM

      Yeah, really you're probably better off using the new Son of Screamer layout and altering the values to match the Eternity. The circuit is exactly the same, just altered values.

      Delete
    2. EdoAugust 22, 2017 at 5:09 AM

      i made a DIYLC layout with corrected tone pot trace. can i contribute it to you?

      Delete
    3. Effects LayoutsAugust 22, 2017 at 9:28 AM

      Sure. Shoot it over. Email is somewhere in the General Layout Notes comments. lol

      Delete
  12. SkaybluesOctober 30, 2019 at 3:38 PM

    I have a problem with the drive control, which does not work, I have tested the potentiometer and it works well. any ideas?

    ReplyDelete
  13. FranFebruary 16, 2020 at 3:34 PM

    Do you have the schematic of Kanji 9?

    ReplyDelete
  14. koshMay 4, 2020 at 7:41 PM

    Do you have a drill layout For the tayda eternity?
    thanks.

    ReplyDelete
  15. Ricco SeixasDecember 31, 2020 at 4:47 PM

    I did the burst version, I can say it's great !!! I put an on / off / on and select between symmetrical, asymmetrical and without diode to use a totally clean boost. greetings from Brazil.

    ReplyDelete