Feedback Pedal

[tomhanzo]

So i was thinking of making this feedback loop from Beavis Audio's site
http://www.beavisaudio.com/techpages...edbackLoop.gif

does anyone have any tips or any clips

[TaySte_2000]

Pedals with buffers are best in feedback loops especialy old 80's pedals. There is no rule when it comes to what you should stick in one as every effect will react differently, hell I've used them to tame some crazy fuzz's and other times it makes a filter inter a high pitched yelp.

This is the only real clip I've got of my feedback loop in action

http://www.grygrx.net/Pedal%20Review...0Bassballs.mp3

Which is the EHX Bassballs both the old USA and Nano version react like this.

The feedback loop is turned on about 1/2-3/4 of the way though but you should be able to hear it.

[fretlessman71]

Interesting... I can't hear a darned thing! Dogs left the room though.

[tomhanzo]

ahahhaha yeah i couldnt hear a big difference but my speakers were dancing on the shelf lol. i dont think i am gonna go through with the build. i just dont see a real practical use for this (im having to remove pedals from the board as is)

thanks for your take on it though

[speak_onion]

I <3 feedback loops. The one I built to go on a bass pedalboard (which it never did, because I never ended up in a band where I could use floops) I put a send/return for the feedback path as well as the normal loop. Putting a volume pedal in the feedback path gave me foot-control of the feedback level, so I could be playing and also going harshbonkers with the floop at the same time.

So, uh, yeah, my advice (even though the plan is dead) is to implement either expressionpedal or volumepedal control of the feedback amount. It's the most important amount to be tweaking.

[tomhanzo]

i can see what you mean. that would be really cool but i dont even know how to fix an expression pedal to something like that.

[speak_onion]

It's really easy!

An expression pedal is a potentiometer, with the outside legs connected to the tip and sleeve, and the wiper connected to the ring. See the feedback level pot? Let a jack replace it such that the exp pedal acts as your feedback pot. It's probably best to use a switching jack so you it will still work even without the exp pedal.

[tomhanzo]

really? so anything with a pot in it can become an expression pedal?

[rcubed]

Originally Posted by tomhanzo

really? so anything with a pot in it can become an expression pedal?

That's all a volume/expression pedal is. It allows more/less signal to pass by changing the resistance.

Beavis Audio also has some buffer circuits that you could potentially add.

[tomhanzo]

well im super nub when it comes to this stuff so what is a buffer and why do i need it? to keep my amp from exploding?

[rcubed]

Buffers can prevent signal loss but could potentially cause side effects that other pedals don't like.

[tomhanzo]

side effects they dont like. umm well i think i will give up on all this feed back stuff.

Thanks for all the help guys

[fuNKmaster83]

Originally Posted by TaySte_2000

Pedals with buffers are best in feedback loops especialy old 80's pedals. There is no rule when it comes to what you should stick in one as every effect will react differently, hell I've used them to tame some crazy fuzz's and other times it makes a filter inter a high pitched yelp.

buffer is definetly it... i experimented with that... i have an old dod 4 to 1 mixer... its passive and the vol. drops about 6 db or more and you have to cranck it up high on efx to make feedback sing... but with this less vol you can get some strange sounds... pads and that sort of stuff