Pages

▼

Wednesday, March 29, 2017

Lovepedal Hi Volt

Today we've got the Lovepedal Hi Volt. A wide variety of tones on tap with this one. It's a cascaded JFET gain stage into an active EQ section, all powered by a 16v charge pump. Laid this out with on board pots and will fit in a 125B with top mounted jacks. Here's the schematic for reference.



at

14 comments:

  1. BerkicauMarch 29, 2017 at 12:12 PM

    OMG!!
    Awesome!

    ReplyDelete
  2. raduandroidulApril 5, 2017 at 4:53 PM

    Thank you very much for your wonderful layouts!

    I've just finished HiVolt, but it didn't work. I found that the problem comes from the power supply part, which is wrong on the FSB schematic. So, you must disconnect 1N4001 diode from the pin 7 of MAX1044 and connect it to pin 8 (as I saw in many others schematic). Because I am lazy, I cut the pin 7 from the IC and I soldered together pins 7 and 8 :)
    Now it works, but not as in videos. It hasn't a tight sound. It has a muffled sound. Maybe are other errors in the schematic.

    Best regards!

    ReplyDelete
    Replies
    1. Effects LayoutsApril 5, 2017 at 4:54 PM

      Thanks for the report. I'll correct the charge pump on the layout.

      Delete
    2. UnknownApril 7, 2017 at 2:46 AM

      I have the original schematic that it was redrawn from, perhaps there was an error made when I had it redrawn to share by another member. The one I have is the factory schematic sent to me by Sean so I don't feel it's right to share without redrawing it

      Delete
    3. UnknownApril 7, 2017 at 2:52 AM

      i would send the schematic to you however to check against the layout you've made if you'd like so we can get this one verified :)

      Delete
    4. Effects LayoutsApril 7, 2017 at 1:15 PM

      Feel free to email it to me

      gehringcustomguitars@gmail.com

      Delete
  3. johnkApril 7, 2017 at 1:44 PM

    judging by the schematic posted on FSB, pin 3 of the mids pot should connect to pin 2 of the top TL072. i corrected the charge pump on mine and then used a jumper to connect it and it works, but it doesn't sound quite like the original pedal to me.

    Jesse, i'd also like to see the original factory schematic. if you could email it to me at jrkallas@verizon.net i'd really appreciate it

    ReplyDelete
  4. raduandroidulApril 8, 2017 at 2:25 AM

    Jesse, I am interrested to see the original schematic, too...i will be grateful if you will send it to me at radu.androidul@gmail.com...thank you!

    ReplyDelete
  5. raduandroidulApril 10, 2017 at 6:31 AM

    Hello, again!

    After I added a wire between pin 3 of the mid pot and pin 2 of top TL072 (as John Kallas suggested above), the effect sounds very well, almost as in the videoclips. Anyway, I will test it these days at higher volumes :)

    Thank you very much all!

    ReplyDelete
  6. Effects LayoutsApril 11, 2017 at 11:24 AM

    I've fixed the layout. Thanks for figuring out what was wrong, guys.

    ReplyDelete
  7. wainer.said@gmail.comMarch 5, 2018 at 2:42 PM

    Can I use the ICL7660S in the location of the MAX1044? Has this layout been successful?

    ReplyDelete
    Replies
    1. Effects LayoutsMarch 5, 2018 at 2:54 PM

      You can use the 7660 in place of the 1044. And to my knowledge it hasn't been verified yet.

      Delete
  8. FernandoApril 10, 2024 at 3:13 PM

    I made some modifications on the circuit:
    I changed the 22nf mid control capacitor to 10nf (mids more tweakable)
    10k resistor from q1 source to 1k, and put a toggle switch spdt in source q1 to make switchable 10uF capacitor to 220nf capacitor, getting a tighter sound;
    And last, a changed the 820k resistor from q5 to 100k (I based in BSIAB that It uses 82k) to get less fuzzy than original sound at high gain configurations;

    It sounds pretty good, verified!

    ReplyDelete
  9. FernandoJuly 26, 2024 at 3:58 PM

    Another mod: change the 22nF + 1M resistor in middle control to 4.7n +100k resistor, you will feel the mids working better

    ReplyDelete