Pages

▼

Tuesday, May 19, 2015

Run Off Groove Phozer V1

I came across the schematic for this while looking through RunOffGroove.com. It's an interesting mashup of Tim Escobedo's Idiot Wah and the LFO section from the EA Tremolo to produce a faux phaser effect, and apparently works very well at higher speeds.


at

19 comments:

  1. p0mp0October 29, 2015 at 9:15 PM

    Tried this one, not workingg, only clean signal. Couldn't find a schematic for this either

    ReplyDelete
    Replies
    1. dtgehringOctober 30, 2015 at 9:50 AM

      Here's the schem: http://runoffgroove.com/old-phozer.png

      Delete
    2. dtgehringOctober 30, 2015 at 9:58 AM

      Just went back over the layout and it should work. The only thing my layout doesn't include from the schem is the LED for rate indication. That would go between the 10k from the voltage rail to the collector of Q4 if anyone wants to add it.

      Delete
    3. UnknownMarch 16, 2019 at 8:02 AM

      please respond to this circuit is working?

      Delete
  2. NahuelNovember 1, 2015 at 2:19 PM

    Hi! In the schematic there's no diode from 9v (1N5817). What is its purpose? It should work without it, right? Greetings from Argentina

    ReplyDelete
    Replies
    1. dtgehringNovember 1, 2015 at 4:23 PM

      That diode is for polarity protection. You can replace it with a jumper of you don't want that feature.

      Delete
  3. angelmahon88May 31, 2016 at 9:47 PM

    Hi, I tried to make a phozer and no function just clean signal anyone can help if possible, thanks

    ReplyDelete
  4. Marcello M.September 4, 2016 at 8:55 PM

    I built this and i put a 1M pot in place of 1.5M wired on the Depth 3 and works. I used the vero layout from Parasit Studio. But mine sounds more like a tremolo.

    ReplyDelete
  5. luciano gianinettoMarch 5, 2018 at 10:48 AM

    Hi! Transistors must be matched? Thank u!

    ReplyDelete
  6. UnknownSeptember 26, 2018 at 10:38 AM

    please can you do the phozer v2 without the manual sweep option part? just the LFO? I know I'm asking too much but ... please?????

    ReplyDelete
  7. UnknownDecember 8, 2018 at 7:09 PM

    is this verified yet?

    ReplyDelete
  8. UnknownMarch 16, 2019 at 8:01 AM

    please respond to this circuit is working?

    ReplyDelete
  9. UnknownAugust 14, 2020 at 3:50 PM

    As shown, this doesnt appear to work. By placing the rate LED between the 10k resistor and q4 emitter, it works perfectly! Wacked out phaser-ish sounds. It's like an auto wah and a phaser had an ugly baby. I love it. Thanks!

    ReplyDelete
    Replies
    1. UnknownAugust 14, 2020 at 3:51 PM

      Replacing the top 1.5M resistor with a trim or external pot controls the smoothness of the cutoff. Phaser trem/chopper? Yes, please!?

      Delete
    2. UnknownOctober 4, 2020 at 12:06 PM

      Q4 collector, that is.

      Delete
  10. ArtisLabMay 3, 2021 at 11:24 AM

    Hi all
    I have just built one of this board. It works well without placing the LED as mentioned in the previous comment, but it has a strange behavior. I can hear the dry and wet sounds and I can change the balance with the depth pot. I only have a strange behavior because I always hear the tremolo oscillator very loud even if i put the depth pot all the way to left (only dry signal).
    I have tried to remove the 22uF cap (center bottom of the board) and the effect stop to work ad I have only the dry signal, but I still hear the tremolo signal as a little background noise. Any advice?

    ReplyDelete
  11. FernandoOctober 11, 2024 at 8:33 AM

    I've checked in a Brazilian forum and descovered that video showing the pedal is about Phozer V2, using IC's

    ReplyDelete