After a lot of research, I decided to build my own spring reverb. I had never done this before so the video includes a lot of prototyping. This unit has some issues, but I learned a lot and proved it is possible. Stay tuned for Part II.

Intro - 0:00
Idea & Backstory - 0:29
Parts - 3:27
Diagram - 5:31
Input Circuit - 6:15
Output Circuit - 7:33
Finished Product - 8:39
Initial Thoughts - 9:13
Overview & Demo - 9:59
Final Thoughts - 11:39

See more Musical DIY Projects here: https://www.youtube.com/playlist?list=PLwIixlr7C6KUbPfAgFP6Sn4D46L0i0CQD

And more effect pedal videos here: https://www.youtube.com/playlist?list=PLwIixlr7C6KVSWiiDvR8999MAGRcmc41g

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Comment by Poorness Studios on July 22, 2022 at 12:31am

Thanks BrianQ. I checked out the Stage Center Reverb and it looks like a pretty cool little circuit. 3 ICs and some resistors/caps. That was a good find. It's not exactly what I was trying to do though. Where that's a simple circuit to use a pre-built tank, I was attempting to build the tank itself. Adding another amp after the spring might be an option but honestly, the output volume is reasonable... even with this thing being passive. I'm working on a round II and I think it's going to make this design a lot more useful. The current problem with this design is feedback. If you get your amp cranked up the spring starts to vibrate and make a small feedback loop. That's probably going to be the hardest part to solve.

Comment by BrianQ. on July 21, 2022 at 1:15pm

Forgot to mention in my earlier post, generally a spring reverb has a preamp & a recovery amp. So, another amp/preamp circuit after the spring would definitely do it some justice? 

Comment by Poorness Studios on July 21, 2022 at 12:13am

There might be a way to make it a lot smaller but I had the wine box on hand and it seemed to work. I'm pleased so far and I think part II is going to be great.

Comment by Doug Thorsvik on July 20, 2022 at 2:20pm

Another intriguing video Kale! I am looking forward to part 2 also. This is definitely a jumbo effects box!

Comment by Poorness Studios on July 20, 2022 at 11:48am

Yeah. I'm happy for a first attempt but I think a couple tweaks could make it really useful.

Comment by t-belly johnson on July 20, 2022 at 11:36am

Interesting stuff. Can`t wait for part 2!

Comment by Poorness Studios on July 20, 2022 at 5:48am

Thanks BrianQ. I figured you'd know more about this. I'm going to go for a round II on this design but I'll probably end up trying something like you suggest as well.

Comment by BrianQ. on July 20, 2022 at 4:31am

Kool, I’ve built quite a few reverb units myself. Check out the “stage center reverb” it has a simple IC driver circuit, it can drive an accutronics tank well. That might be a better driver for your project?Actually, this is a good alternative to a Fender style reverb unit, those transformer’s are really pricey & tubes are becoming scarce because of the Ukraine incident. Have you heard of the  Belton “brick”? It’s an IC module that emulates spring reverb, eliminates the need for a reverb tank? Cheers :)

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