Love my weener (that was fun to write) but its still got a bit of scratchy noise towards the treble end. How do I get rid of this?
Some say bumping up R2 from 220ohms would work. Others say R4? Or could it be a bad pot? If so, how could I tell?
I just built another one to similar specs and it is totally quiet. Biggest difference are R4 and the trannies.
Any ideas would be great. Thanks
annoying bump
So there's a static noise on the treble end? 1st try low gain, low noise transistors. Like 2n222a
I had the same problem with my cry baby-based build and saw a rumor on diystomp that noise is reduced if the hfe of both transistors is closely matched. I tried it and it seems to help!
I had that issue with a vox wah just today. The cure for this one was tightening the pot. when I got to the treble end,the pot was twisting and touching the bottom of the wah plate which is metal.
thanks dudes
I've swapped Q1 out a few times and only noticed volume differences more than anything with the static noise persisting throughout.
I'll try some others I just got in along with ratcheting around the trimpots I have in R4 & R5 (I believe that's where they are off the top of my head)
THanks
How to cure weener scratch lol.....thats just haha funny. All jokes aside glad u figured it out
There were a couple of posts regarding static in wahs.
http://www.madbeanpedals.com/forum/index.php?topic=5041.msg43748#msg43748
Best thread title of the week.
I saw one on weB MD asking how to cure Weener itch.
Funny thing is the replies were pretty much the same....
Still working on this one
I need to swap out R4, socket it and see if that does it
I've tried a lot if tranny swaps and so far no real change in static. Just volume mostly
Quote from: octa805 on April 04, 2013, 03:25:08 PM
annoying bump
Weener scratch AND an annoying bump? Dude, it's time to go to the doctor! ;D
Hi Everyone,
Just wanted to follow-up here cause I finally fixed this.
I thought I'd have to play with R2 or R4 so I swapped those around a ton. Did nothing.
Then I finally just sprayed some de-oxit spray in the sweep pot, worked it around a few times and then amazingly it was 100% clear. NOT ONE BIT OF STATIC.
I don't know what boogers were in there but it was pretty sweet to finally clear that up with such a simple thing.
Now my wah is perfect. yea!
Looks like I'll put this one in my "should have been obvious" folder that I've built up for myself over the years :-[
Thsi should take care of your weener itch, um I mean scratch.
http://www.antimonkeybutt.com (http://www.antimonkeybutt.com)