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Can I salvage the Spring Reverb from my Marshall Amp as a standalone effect?

FizzyLizzy27FizzyLizzy27
in Hardware

I’ve got an old Marshall bound for the scrap yard but it has an actual spring reverb box. I’m wondering how big of a project it would be to pull the reverb box out and make a dedicated effect.

It’s a Marshall Split Fifty twin reverb. I’ll try to get some pictures later.

Comments

  • uncledaveuncledave

    Hi. Assuming it's just the springs and transducers, you'll need to add some electronics. A preamp and power amp to drive the springs, a preamp and mixer for the output. This stuff is easy inside the amp, because there are stages they can just tie the reverb into. I googled "spring reverb module" and found lots of pictures and schematics that could be a start. Also, there appear to be Eurorack modules built for this specific purpose.

  • Philandering_BastardPhilandering_Bastard

    If you get the Koma Field Kit FX all the electronics are already in place and you only need to attach the spring tank.

    https://koma-elektronik.com/new/product/field-kit-fx-modular-multi-effects-processor/?srsltid=AfmBOopOUdbSkJ_DLIbs_q87PI0r3-yn9OXsvmtSlnkk8wmolmUqdje9

  • tubespacetubespace

    I went down this road a few years back. I ended up using the preamp from some old computer speakers and hooking those up to a couple of spring reverb tanks from some Fender amps I had. It was a fun project, but the results did not yield much, I felt. I have seen some products around that can help you achieve this, but most of them already have a tank installed. The Koma kit above is supposed to be good, I hear. And also the reggae dub community has some small batch reverbs that I've seen in the past - they tend to sell out fast, however.

    Myself, I ended up going back to digital - I bought a Source Audio Ventris - and the sound was gorgeous.
    Good luck on the project!

  • michael_mmichael_m

    I know someone who did this, but it was far from an easy task. I don’t remember all the details, but from what I remember, he salvaged parts from another amp and with the help of someone with electronics knowledge he got a very fine spring reverb going. So possible, but not straightforward.

  • FizzyLizzy27FizzyLizzy27

    Ok so this sounds beyond the scope of a weekend project for a tinkerer. I might end up scrapping the whole thing with that being the case.

  • michael_mmichael_m

    Why not google it and see if you can find someone who has done it already and maybe even made a how to video?

  • Philandering_BastardPhilandering_Bastard

    There’s also the Doepfer module (I’m sure there are others) but then you’d have sold your soul to the Eurorack devil:

    https://www.thomannmusic.com/doepfer_a199.htm

  • mrufino1mrufino1

    https://www.funkydown.com/downloads/shitty2.pdf

  • catherdercatherder
    edited January 30

    I used a cheap headphone amp as driver and a microphone input on my mixer as recovery amp for the spring tank. Sometimes with an EQ pedal in between. “It worked” and could create some fun effects, specially with some feedback. But nothing beats a proper spring reverb unit that matches the tanks impedance and frequency characteristics.

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