How to build your own spring reverb unit | Guitar.com | All Things Guitar
Prototype reverb pedal using the Accutronics/Belton BTDR-2H module | Hot Bottles
Digital Delay Pedal : 19 Steps (with Pictures) - Instructables
DIY Reverb Pedal Circuit: Spring-Hall Reverb with PT2399 IC – Deeptronic
Experimentalists Anonymous DIY Archives
Build Your Own Spring Reverb | Tape Op Magazine | Longform candid interviews with music producers and audio engineers covering mixing, mastering, recording and music production.
GuitarPCB Add-Verb Reverb Pedal Kit by Pedal Parts and Kits
DIY Reverb Pedal Circuit: Spring-Hall Reverb with PT2399 IC – Deeptronic
spring reverb analogue predelay "design" | GroupDIY Audio Forum