Uploaded November 2025 | Updated September 2026, 2 weeks ago
I built a spring reverb for my guitar and studio. It uses a somewhat readily available PCB but it's far from a kit. This is supposed to be a 6G15 modernized clone.
Total cost is about $175 USD. It took about 6-8 hours to assemble and another 20 hours to finish including the cabinet and faceplate. Depending on the parts you use and the cabinet you make it may cost more, but probably not much less.
Amazon Parts:
Jfets: amzn.to/3JvRzwo
The reverb tank: amzn.to/3JJwCOz
Heatsinks: amzn.to/49OU0oe
Knobs: amzn.to/4oHesfw
Aluminum: amzn.to/4qZAyLA
RCA to cut in half: amzn.to/4hZF1tU
Jacks: amzn.to/48aYLXX OR amzn.to/4oHIRdI
3PDT: amzn.to/4ptgIHp
Regarding the JFETS, I bought the ones from the link and they worked. I have no idea what the specs are, but if you buy some and test them please leave a comment so we all know what they are!
Most of the electronics components were available from Mouser Electronics, except Jfets and the Potentiometers. Buying pots from mouser is a challenge. I bought these at Amplified parts along with the blonde tolex, reverb tank, reverb cables and that Hammond pedal case.
PCB, jacks, LED/mount, power inlet: Griffin Effects, Note: the schematic apparently has an error for R15, which should be 1 ohm. I ordered and installed 1 ohm and it works. I think the original value would starve the mosfets.
Also, the build guide has an drawing error for the switch pcb labelling, which doesn't match the actual switch pcb. Ignore the drawing and use the switch labelling.
Finally, use some type of external heat sink. I think the original design called for the Mosfets to be heat-sinked to the PCB. I can't imagine that would last very long, those mosfets get VERY hot.
I built a spring reverb for my guitar and studio. It uses a somewhat readily available PCB but it's far from a kit. This is supposed to be a 6G15 modernized clone.
Total cost is about $175 USD. It took about 6-8 hours to assemble and another 20 hours to finish including the cabinet and faceplate. Depending on the parts you use and the cabinet you make it may cost more, but probably not much less.
Amazon Parts:
Jfets: amzn.to/3JvRzwo
The reverb tank: amzn.to/3JJwCOz
Heatsinks: amzn.to/49OU0oe
Knobs: amzn.to/4oHesfw
Aluminum: amzn.to/4qZAyLA
RCA to cut in half: amzn.to/4hZF1tU
Jacks: amzn.to/48aYLXX OR amzn.to/4oHIRdI
3PDT: amzn.to/4ptgIHp
Regarding the JFETS, I bought the ones from the link and they worked. I have no idea what the specs are, but if you buy some and test them please leave a comment so we all know what they are!
Most of the electronics components were available from Mouser Electronics, except Jfets and the Potentiometers. Buying pots from mouser is a challenge. I bought these at Amplified parts along with the blonde tolex, reverb tank, reverb cables and that Hammond pedal case.
PCB, jacks, LED/mount, power inlet: Griffin Effects, Note: the schematic apparently has an error for R15, which should be 1 ohm. I ordered and installed 1 ohm and it works. I think the original value would starve the mosfets.
Also, the build guide has an drawing error for the switch pcb labelling, which doesn't match the actual switch pcb. Ignore the drawing and use the switch labelling.
Finally, use some type of external heat sink. I think the original design called for the Mosfets to be heat-sinked to the PCB. I can't imagine that would last very long, those mosfets get VERY hot.
