Spring Reverb Tank Driver

[skeletonghost]

Hey guys, came across some interesting DIY spring reverb projects today. This one looked partcularily easy, and from the demo sounds great. Probably wouldn't be too hard on perfboard but I thought some of you would find it interesting :) http://www.dogenigt.com/2013/08/spring-reverb-module.html

[skeletonghost]

I was able to answer my own question! I found this today at proto-schlock. Would be fun to experiment with one of those 20 dollar spring verb tanks.  

EDIT Oop just realized this is 9+/9-, so it'll need a dual supply or virtual ground (This circuit has got you covered though)

[Frank_NH]

I've been meaning to build a SCR.  IvIark has a daughterboard for a +9V/-9V supply here:

http://tagboardeffects.blogspot.com/2012/05/negative-voltage-inverter.html

Would be a quick one to put together and play around with.

[Neil mcNasty]

Here's my take on it!

I cut it down to just 1 TL082, as it seemed a bit waste to use 2 halves instead of one full IC.
But I'll make one with 2 seperate TL082 IC's later as well, as this configuration might give some bleed-trough. At least that's what the circuit designer got on the breadboard when testing it, but that might not apply when boxed up and isolated (I hope).

[Frank_NH]

Thanks Neil!  Here's a link to the Dogenigt Reverb:

http://www.dogenigt.com/2013/08/spring-reverb-module.html

And here's the existing schematic:



I can see where you can combine the TL082s into one.  The demo sounds pretty good and it would be nice to see a guitar demo at some point.  Let me know if you build this and if you think this a good spring reverb for guitar.

(Edit:  I suppose if bleed-thru is an issue you could use single, low noise op amps e.g. TL071)

[Neil mcNasty]

I have not had any time to build and verify this yet, but here is a layout that matches the schematic, using seperate IC's.
I will try to build it in a couple of weeks from now, when I return to my Workshop in Oslo (that's where my Reverb Tanks are...)

[Frank_NH]

Thanks for the layout.  I have a tank lying around doing nothing and may build this for fun.

[hobbyseason]

has anyone verified this by any chance??