Questions about feedback looper circuits

[eh la bas ma]

Hello,

A friend was playing solo in a bar last night. It was great. He was doing essentially some tapping on his guitar with both hands, using 2 delays, an overdrive, and a "feedback pedal". Pavel Viry, you can listen to his work on bandcamp.

I'd like to try to build one of these since it looks quite simple.


If I understand correctly, this is supposed to take the wet signal from 1 effect or more, let's say a delay for exemple, and send the signal in the same delay again, and again...?

Is there some interesting feature I could add to this build ?

Edit 1 : My friend told me that his feedback pedal doesn't work with every circuits, he said it's even written in the product's documentation.

Is there some simple explanation about that ?

Edit 2 : I found the same issue at the end of this post :

You know what, ****-it, I can't be bothered to do anything with the schematic, you can have it:



Spread the love....


** Funnily enough, it's quite dependant on what FX you put into it. My BBE Two-Timer works ace with it, yet my Malekko 600D does absolutely nothing with it!

All ideas are welcome !