Tuesday 20 July 2021

BJF Analog Reverb

 Schematic avaiable at Moody Sounds.




10 comments:

  1. This comment has been removed by the author.

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  2. I very much want to build this. If anyone else has - please let me know your thoughts or maybe link a video of it! I will build it after I make a bit of money for parts. Always loved the idea of a real spring reverb pedal. Yisssss!

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    1. I can't fine a proper demo for it, just a short soundclip...
      https://www.youtube.com/watch?v=dyAIl_7s04w

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  3. Verified.

    Q1/Q5: 2N5457
    Q2: 2N2222
    Q3/Q4: BC549

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  4. I've never seen this before.... Is it kind of like the Surfy bear? A Fender reverb unit using FETs instead of valves?
    In the demo, it's a small box... Is it a tiny spring reverb unit?

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  5. Ignore me, I've found listings for the kit!
    I may be out of my depth with this one....
    One day ...

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  6. I just built this and it sounds really really good! Initially, I used these transistors:
    Q1/Q5 - J113
    Q2 - 2n2222a
    Q3/4- BC184c
    I was getting a signal, but the reverb mix was weak. I studied the schematic and, using an audio probe, I found that Q2 was not “swinging”, so I switched it for a 2n3704 (I had to bend the leads since it’s ECB). This thing started howling with reverb! Using the trimmer, I got it to unity gain and it’s quite luscious.
    I had recently built the “Box of Hall”, which I boxed up. It’s also a great pedal. Once I box this one up, I’ll make some comparisons, but as of now, I favor this one for its more natural reverb. Thanks again Fuzz Head!!!

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  7. Hi, awesome job. Could I send in a request to update it for the latest version of this? https://moodysounds.com/wp-content/uploads/2021/09/analog-reverb-kit-eng-2c.pdf
    Thank you

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    1. This is my fav spring tank driver circuit. As much as I want to volunteer to do this drawing, I don't know if I could handle it. Bjorn's circuit schematics are hand scribbled (and I do mean SCRIBBLED) and after comparing the v1.2 with the v2 you linked here, I think I'd be out of my depths to try... I think we are going to have to leave this one up the Fuzzhead himself.

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