DIY Reverb Pedal Circuit: Spring-Hall Reverb with PT2399 IC – Deeptronic
Silver Spring Reverb pedal by Mad Professor
Analog Spring Reverb Pedal : r/diypedals
Coda Effects - Rub A Dub Reverb circuit analysis
Analog Spring Reverb : How it works | Anasounds
How to build your own spring reverb unit | Guitar.com | All Things Guitar
Stage Center Reverb Guitar Effect - Circuit Scheme
Build Your Own Spring Reverb | Tape Op Magazine | Longform candid interviews with music producers and audio engineers covering mixing, mastering, recording and music production.
Femto-Verb--a DIY digital reverb pedal
Everything I know about Spring Reverb | by Tom Whitwell | Music Thing Modular Notes | Medium