Pages

▼

Saturday, 17 March 2012

Ersatz Verben psuedo reverb by culturejam

Designed by culturejam on FSB and CW, this is what he wrote:

Inspired by the Crap-Fi Delay by allesz, I decided to see if a similar simple circuit would work at lower delay times for reverb and slapback. It does.

Once the basic circuit was up and running, earthtones helped me refine it and make it much nicer. He's wicked smaht like that.

Delay time range is about 40ms up to about 140ms. As delay time is increased, more highs are rolled off by C4 (that was ETA's idea). So it's pretty much hiss/noise free no matter the delay time. 

He posted a demo here, and it sounds pretty good to me.  Something different to do with those PT2399s you've got.


Geiri's quick demo of his build:



And another clip with 100K as delay pot for longer delay times...:

at

76 comments:

  1. Anonymous17 March 2012 at 09:35

    Excellent, Going on my 'to do' list

    Cheers ;0)

    ReplyDelete
  2. timmy.18 March 2012 at 04:10

    call it verified :) sounds great!

    ReplyDelete
  3. Anonymous18 March 2012 at 20:00

    Damn. timmy beat me to it!
    +m

    ReplyDelete
  4. vaxire28 April 2012 at 16:04

    I.

    I realize it. it worked great but now I no longer sound reverb. The knobs seem to work. I mean a regulation in the breath when I turn. One appears to increase the volume of that breath, ... But not the sound you want. Do you have an idea of this defect?

    ReplyDelete
    Replies
    1. vaxire9 May 2012 at 09:29

      Hello!

      it was just that the footswitch was broken

      It works very well !

      Thanks!

      Delete
  5. Brett2 May 2012 at 12:46

    Just wondering if anyone knows what dictates the min and max delay time, and whether it could be increased to a longer delay. Worked first time btw, which only seems to happen with your veros

    ReplyDelete
    Replies
    1. Brett2 May 2012 at 12:49

      I just answered my own question by chucking on a 100k pot which gets some nice long delays

      Delete
    2. IvIark2 May 2012 at 13:38

      Cool, what are the repeats like, are the quite lofi?

      Delete
  6. Brett2 May 2012 at 16:23

    The 100k pot has nice repeats. 250+ starts to get lofi which is nice if your after that sorta thing. Maybe a mod idea is having a pot after the feedback, like a band pass type filter so the repeats filter out. Might have a tinker with that idea n see how it goes. Could slap a lovepedal sticker on there and pass it as my own design. Just kidding

    ReplyDelete
    Replies
    1. IvIark2 May 2012 at 17:19

      If you add a bandpass filter on there you've spent more R&D time and modded it more than Lovepedal ever have with their pedals! :o)

      Delete
  7. Unknown22 June 2012 at 20:20

    OK, I just built this one... not sure if my mix and feedback controls are working right. With the feedback down (one repeat), the mix control seems to work fine and goes from all delay, to clean guitar. But once I dial in some feedback, I can never get clean guitar (mix knob then just goes from delay only, to guitar+delay). The feedback knob works, as it adds feedback. Is this the way it is supposed to work, I'll go over the board again tonight for bad cuts/solder bridges or a misplaced component, but before I spend all night wanted to be sure it wasn't just designed that way.

    ReplyDelete
    Replies
    1. Unknown25 June 2012 at 06:38

      After making the Crap-Fi Delay (which this is based upon) I guess it's supposed to work that way.

      Delete
  8. mirosol1 July 2012 at 18:25

    Rockabilly rocket for a friend:
    http://mirosol.kapsi.fi/varasto/boxes/therocket.jpeg

    It's Tremulator to Verben. Works like a charm and sounds very fat and warm.
    +m

    ReplyDelete
  9. Brett6 July 2012 at 07:43

    Mine works that way. From memory if I turned down the feedback and time knob I'd get a clean signal.

    ReplyDelete
  10. heavenwithin25 July 2012 at 06:06

    I am getting clean guitar signal even without a battery and the PT23399 removed from the circuit (I am just testing the board without 3pdt switching) and when the PT2399 and battery is there I am getting reverb but the mix and feedback knobs are creating lot of hiss and working only in certain positions and on other positions there is simply the clean signal without reverb.....what could be wrong?

    ReplyDelete
  11. Steve Weston19 May 2013 at 14:34

    Hi, I'm only getting about 1.5v on the O of the 78L05 - is this correct?

    Im getting a clean sound an no delay, so suspect this is the problem?

    ReplyDelete
    Replies
    1. IvIark19 May 2013 at 15:07

      No that's not right, you should be getting close to 5V at the output

      Delete
    2. Steve Weston19 May 2013 at 18:48

      Thank you, I now have it working!

      I am only really getting one repeat, is there a way to get more?
      The only change I have made is used 100k for Time pot.

      Thanks for all your help!

      Delete
  12. Lee11 August 2013 at 17:32

    Hi IVIark, I built two of this, and the first one works just fine. However, in the second attempt, the mix knob seemed to function incorrectly. I suppose the mix knob determines proportion of the dry signal and the delay signal.

    If I was right in the first attempt, there should be only the delay when the knob was turned to the left-most while only the dry signal when right-most.

    But my second attempt did not work in this way. In the left-most position, there was no dry signal and only the delay signal (the overall volume was low); in the right-most position, there were both dry signal and the delay signal ( the overall volume was louder). It sounded that the delay signal was along with the dry signal, wherever position the mix knob was.

    So could you help me out with this problem？I've double checked the circuit and knifed the lines. And the output voltage of 7805 was 4.88.

    ReplyDelete
  13. Unknown11 September 2013 at 23:45

    Built this this week and just fired it up. Works but the effect only kicks in when the FB is crank just short of full. Then, a hair more and it goes almost into oscillation. Going to have to debug this problem before it gets boxed.

    ReplyDelete
    Replies
    1. Unknown11 August 2014 at 15:52

      did you find a solution for the FB- problem?

      Delete
  14. Sonicguitars5 October 2013 at 19:31

    ....but the two little orange are 100n or 100p?

    paolo

    ReplyDelete
  15. Anonymous6 November 2013 at 10:16

    I'm having a similar issue as lee. I've built 2 and both do the same? I'm looking for a more wet sound? Mix knob to the left and there's only the delay signal how to correct this?

    ReplyDelete
  16. Anonymous10 November 2013 at 11:25

    Other than that it's a really great sounding circuit! I'm very pleased with mine! And FYI I do all my work on perfboard and trace the layouts! Great work Ivlark! Thanks for all your hard work! And do you have to figure out the layouts or does that software do it? I downloaded it and have trouble using it. I need something that takes a schematic and gives you a PCB layout if possible I'm not good at that manually lol

    ReplyDelete
    Replies
    1. mirosol10 November 2013 at 14:41

      Auto-routing software tends to cost something like 12000 usd. Yeah. We are drawing these manually.
      +m

      Delete
    2. Anonymous11 November 2013 at 22:37

      Kudos to all of you then my hats off! I'm good with circuits tracing, reading, making schematics , and building on perfboard but layouts um not my strength either way the work you guys do on here is great many thanks for occupying way too much of my time!

      Delete
  17. Eric16 November 2013 at 02:36

    This sounds great! I substituted a 100k for the 10k and got some long delays (thanks Brad!). I just have to figure out how to get a bit more highs out of the delay signal without going into serious oscillation.

    Great layout Ivark!

    ReplyDelete
  18. Unknown18 November 2013 at 21:08

    Could you add the tap tempo board to this?

    ReplyDelete
  19. Eric27 December 2013 at 21:21

    Is there a way to add an active LED to the layout in a way that will have the LED blinking with the delay time?

    ReplyDelete
  20. MoT13 January 2014 at 13:06

    What do you mean by?: Note 2 links in 1 hole at PT 2399 pin 3.. is the wire bridge going from pin 4 to pin 3 and pin 3 to ground?

    ReplyDelete
  21. Unknown17 January 2014 at 21:17

    when I use the humbucker switch actuated pops it loud. Whats wrong?

    ReplyDelete
    Replies
    1. IvIark18 January 2014 at 00:08

      Add a 1M resistor from the input to ground, and a 100K resistor from output to ground. That should stop it. The output resistor should be easy enough to add on the board, but for the input there isn't a lot of room there so if you don't want to hang it over diagonally to the space on the ground rail, just add it to the stomp switch.

      Delete
    2. Unknown18 January 2014 at 17:30

      Oh man. I've got a wrong connection between ground and input and output. Now i've got no problems. Sorry.

      Delete
  22. Unknown18 February 2014 at 23:21

    Is anyone else having problems with distortion from this circuit? I built one on it's own board & it worked absolutely perfectly. But now I've built a new one on a board with a Theremin & the delays are very very distorted. Can't find any faults with the build & all tracks between the Theremin & delay are broken.

    ReplyDelete
    Replies
    1. Unknown20 February 2014 at 15:13

      Nevermind, I'm an idiot, left a capacitor out. Jeeeeesus...

      Delete
  23. Unknown22 March 2014 at 02:15

    use 20kb for time pot.

    ReplyDelete
  24. Luke15 July 2014 at 03:23

    . I'm getting no dry or delayed signal but at a extreme settings I get oscillation of internal noise. I think the signal just isn't getting to the pt. my voltages are as follows:
    I 9.1
    G 0
    O 4.95

    1- 4.92
    2- 2.45
    3- 0
    4- 0
    5- 3.6
    62.4
    7 3.9
    8 3.9
    9 2.45
    10 2.45
    11 2.4
    12 2.45
    13 2.45
    14 2.45
    15 2.45
    16 2.45
    I built the same layout
    Does the dry signal come in to pin 16 or is there somewhere else I should look for where the signal is getting broken?

    ReplyDelete
  25. Unknown30 July 2014 at 16:12

    nice pedal. Just buildt it. But do you think the feedback control might be better with a diffrent poti than 250K? Maybe a like 200k or 150k? May problem is, that I have to turn it up almost to the max to get the slapback sounds.

    ReplyDelete
  26. Steve Weston11 September 2014 at 13:54

    This comment has been removed by the author.

    ReplyDelete
  27. Steve Weston11 September 2014 at 13:56

    This comment has been removed by the author.

    ReplyDelete
  28. Unknown17 October 2014 at 17:38

    I built this circuit with a momentary switch to get the infinite repeats. One lug of the switch to a 22k resistor then to fb2. The other side of the switch to fb3. It sounds pretty sweet I tried it without the resistor but it would self oscillate to bad with the feedback pot in the right setting the sustained note is at unity it sounds pretty cool

    ReplyDelete
  29. Putra Imam Arisfadillah25 December 2014 at 12:30

    i've build 2, the first pedal working fine, but the second have a problem, when pedal is on, i don't get a sound, but when i unplug the supply, i get a little sound,
    bypass working fine
    please help me get the problem

    ReplyDelete
  30. Steve Weston3 April 2015 at 15:35

    Is there any way to wire up an led to flash in time with the delay?

    ReplyDelete
  31. BRAVEWOLF1 June 2015 at 15:28

    uff did this project and gave me a sound ... it's great ..... but I can only say : VERIFIED

    ReplyDelete
  32. Carpe DM17 July 2015 at 01:15

    Is there a way to brighten this up a little? I like it, but it cuts too much treble

    ReplyDelete
  33. Unknown27 July 2015 at 16:38

    This comment has been removed by the author.

    ReplyDelete
  34. Unknown27 July 2015 at 16:39

    78L05 generates heat.(hot enough to burn my skin)
    is this right?

    ReplyDelete
    Replies
    1. Blackwing12 August 2015 at 18:29

      No

      Delete
    2. Unknown13 August 2015 at 05:33

      i replaced the one with a 500mA regulater.
      then it has stopped heating.
      what do you think was problem?（ both the 78L05 and a 500mA regulater works right）

      Delete
  35. Unknown13 August 2015 at 11:00

    （in sound）

    ReplyDelete
  36. The Manticore17 August 2015 at 20:20

    Built this (with 100K for longer delay) and boxed it up but disappointed in the end because there's considerable volume loss with the pedal engaged. Also it randomly (?) goes into crazy screechy oscillation at times.

    ReplyDelete
  37. The Manticore17 August 2015 at 20:20

    Built this (with 100K for longer delay) and boxed it up but disappointed in the end because there's considerable volume loss with the pedal engaged. Also it randomly (?) goes into crazy screechy oscillation at times.

    ReplyDelete
  38. Sharpy2 October 2015 at 21:44

    i have problem with FB when i go max it have a crank sound non stop.

    ReplyDelete
  39. Germánico18 October 2015 at 09:19

    Im getting the same Sharpy. Just dont crank the feedback to the max. It regulates how much of the signal gets fed back into the loop. Turning it all the way means most of your signal gets repeated which would be the sound equivalent of a mirrored hall, it just repeats itself infinitely.

    I just build this one, sounds great . I used a dpdt switch to connect a resistor in series with lugs 1&2 of the time pot. (found out this doesnt changes the resistance on lug 3, so it doesnt affects its interaction with the bottom row (13) of the vero. The pot is 100k nominally but actually gets 107k. One side has a 27kohm resistor and the other a 120k. Middle position is off. So I get:

    Position 1 (top, 107k + 27k) I get 0-21k = 276ms
    Position 3 (bottom 107k + 120k) 0-56k = 670ms
    Position 2 (middle 107k only) 0-107k = 1255ms

    Formula is (11.46 + Resistance in Kohms) + 29.7 = Delay times in ms, which I took from Electric Druid's useful equations for the PT2399.

    In all Im very satisfied. I housed it in a bare 125b for now.

    ReplyDelete
  40. Unknown25 April 2016 at 09:43

    Please tell me where to put another 100k resistor in this schematic?Thanks

    ReplyDelete
  41. pakkee6623 July 2016 at 07:19

    Successfully build with lm7805, nice reverb sound get into,
    very interested on Germánico sw/resistor will give it a try later,
    thanks for the layout, and here some gutshot share,
    https://goo.gl/photos/C1i3gQDebwg52QyP9

    ReplyDelete
  42. Unknown15 July 2017 at 09:32

    My 2 cents on this puppy.... Change the voltage regulator to a L7806 for better faux verb. 2399 data sheet says you can go to 6.5V... on fx forums I have seen people push it up to 7.5v for even better slow stuff. 6v worked better than 5v when I cooked one up. Change the 22nf cap to 15nf or 10nf (lower=more highs) to to make it brighter and not so dark. I did the feed at B50k like a deep blue delay, B25k for the time pot sweeps nice half way it goes to self osc.

    ReplyDelete
  43. FXS18 April 2018 at 13:39

    Hi guys. I just built this but i had no 100n capacitors left. I used 150n instead, the whole thing works but the delayed signal distorts like madness. the longer the delay time the more distortion. Could this be my silly attempt to replace the caps? I don't understand the 2399 so I'm sorry for the silly question. I already tried a different 2399.

    ReplyDelete
    Replies
    1. Unknown19 April 2018 at 09:24

      put capacitors at 100n and everything will be fine. Yesterday I collected this project with a potentiometer at 100K, everything works wonderfully. But there is noise when time increases. To remove it, attach a green light-emitting diode to the 7th leg of the IC. The cathode of which is fixed to the ground. Sorry for my bad english))

      Delete
    2. FXS19 April 2018 at 15:30

      Thanks for the answer. Today I replaced the caps except for the input / output and now there is no more distortion. Yay. Sounds pretty good. The mix control acts a little strange but its alright. Noisy is true, so i'll try that. Interesting, why led?

      Delete
    3. Jonathan Ty Long19 April 2018 at 16:52

      That LED on pin 7 is a current limiter. It stops the signal from getting beyond ~1.7V peak to peak inside a chip that runs on 5V. The distortion has more to do with the chip itself, I think.

      Delete
  44. Unknown19 April 2018 at 21:20

    Yes you are right! Completely remove the noise will not work because of the features of the chip. But the result will be a little better anyway.

    ReplyDelete
    Replies
    1. Unknown19 April 2018 at 21:23

      Initially, 2399 is not designed for such a long delay, if you use a 100K potentiometer (time). For normal operation with a long delay, you need to use two 2399. If you use 1K (time), as in the original circuit, there is no noise, because this will be the normal operating mode of the chip. once again, sorry for my bad english))

      Delete
    2. Anonymous14 March 2019 at 20:38

      This comment has been removed by the author.

      Delete
  45. Anonymous14 March 2019 at 20:41

    First pedal that worked right away, pretty happy with the result, it eats a little bit of the highs though.
    Made it with a switch that puts a 10K resistor in front of leg 1 of the time-pot, so it actually doubles the time value.<

    [img]https://i.imgur.com/Ol4PlVS.jpg[/img]
    [img]https://i.imgur.com/KfyEzoI.jpg[/img]

    ReplyDelete
  46. Blaze17 August 2019 at 01:19

    Hey guys please help me out. Built this and it’s acting like a metronome. If the Time pot is on full there a beep every second or so, and if I pull it down the speed of the beep increases. The guitar is still audible without the effect

    ReplyDelete
  47. Unknown16 April 2021 at 14:28

    I was just about to comment asking for help on why I was getting no clean signal and realised it was my terrible soldering on the mix pot!

    All up and running now and sounds great! I've taken some others advice here and used a 20k time pot just to extend the delay a touch, now to box it up!

    ReplyDelete
  48. Edmund Moon18 July 2022 at 22:29

    Hope someone can help me. I added this modulation add on board http://tagboardeffects.blogspot.com/2014/04/grind-customs-fx-deprofundis-delay.html with a NSL-32 to this circuit. I connected it to time 1 and time 3 as time 2 is grounded. I hear the modulation but the time knob doesn't seem to have much of a range. Any suggestions?

    ReplyDelete
  49. EKA SATRIA BAHARI3 August 2022 at 14:52

    I build this pedal with one change on time pot using 20k
    But i got very noisy oscillating sound when cranking up feedback pot
    And also mix pot act strange not just blending wet and dry signal
    Any idea on solution???

    ReplyDelete
  50. Jesus Cabrera4 February 2023 at 03:09

    I wanna build this, but Idk the variables of the potentiometers/controls; if you can pass me the model, that would be awesome.

    ReplyDelete
  51. Jamie B4 April 2023 at 17:08

    Built this, it sounds great. It definitely works better since I remembered to include the v reg.

    ReplyDelete
  52. Davis26 September 2023 at 20:32

    What do you mean by?: Note 2 links in 1 hole at PT 2399 pin 3.. is the wire bridge going from pin 4 to pin 3 and pin 3 to ground?

    ReplyDelete
    Replies
    1. IvIark26 September 2023 at 20:40

      You need a link from 3 to 4 and then one from 3 to ground. So the note is just a heads up that pin 3 has 2 wires soldered in it.

      Delete
    2. Davis26 September 2023 at 20:45

      Oh I understand. Thanks for the explanation! My brain was smoking trying to figure that out.

      Delete