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DIY MOD Wave Spring Reverb question
Old 13th August 2020
  #1
Here for the gear
 

DIY MOD Wave Spring Reverb question

Hi there. I've been building a DIY MOD Wave Spring Reverb kit for a few weeks. I got right to the finish line (almost) but I'm having problems with feedback when turning the reverb level up past 1 or 2. Something is definitely wrong and it appears that DIY MOD have stopped offering tech support on their kit builds due to it being too time consuming. I was thinking maybe someone here might have some suggestions? Perhaps someone else has built this kit and may have gone through similar troubleshooting? I've built a few pedal kits but this is my first full power build. I'm pretty new at this and have been very careful to solder the components into the right places. But, I'm pretty sure I did something wrong.

One thing also that has been perplexing is that the input to the reverb tank shows continuity between the sleeve and center. I asked the MOD DIY folks about it and they said it may read 1.8 ohms on my meter. I'm reading about 1.0 ohms. So not sure if this is the issue?

Any thoughts? Thanks so much!
Old 15th August 2020
  #2
Here for the gear
 

Here's a few pictures and links to the documentation in case anyone is interested. I know the problem may be hard to diagnose without more info. Sorry.

https://imgbb.com/vYcWnNv
https://ibb.co/gg330xR

Video of feedback / noise issue:
https://youtu.be/jpwzRyrgaj0

Documentation and demos:
https://www.amplifiedparts.com/produ...-spring-reverb
Old 21st August 2020
  #3
Here for the gear
 

Anyone built one of these? Any tips are appreciated. Thanks!
Old 21st August 2020
  #4

You say you have feedback problems. Is this true with a recorded signal going in and listening through headphones?

It's not unusual to have feedback problems from mechanical coupling to reverb tanks. But, if you are coupling your output back into your recovery circuit electronically, there is a wiring problem....



-tINY

Old 22nd August 2020
  #5
Here for the gear
 

Interesting! I’ll try some more troubleshooting and report back. Thank you!
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