Spring Reverb Pedal

[SilverSurfer]

I am trying to build a pedal to use with my spring reverb tank.  Any suggestions on a build and schematic?

Thanks

[matmosphere]

Welcome to the forum.

There was a project called the surfy bear a while back that people seemed to like. Don't know if they still sell boards now though.

[mjg]

I've just finished one, if you are interested I can clean up the schematic and pass it on, and I actually have some boards left over.  I wasn't going to offer them for sale as I thought it was a pretty niche PCB, but if you want one I'm sure we can work something out. 

[WormBoy]

This will depend a lot on what exact reverb tank you have lying around, especially the input/output impedance. Some tanks are meant to be included in tube circuits (with a transformer), and others are meant to be driven directly by opamps. Mixing that up will lead to drama  .

[mjg]

I'd also recommend reading over this site, if you haven't found it already:

https://sound-au.com/articles/reverb.htm

It goes into details, like WormBoy says, about tanks and impedances, etc.  Has schematics too.  Well worth the time to read it all. 

I'm attaching a schematic, but depending on your tank it will need values adjusted.  The tank driver and recovery are based heavily on the info on the site linked above.   It needs +/- 15v power, which I had on a different board, so the power supply isn't in this schematic.

[jubal81]

Really impressive design, mjg.