so the subject of a blend knob came up a few times today while i was browsing and it made me wonder about it a bit. would adding a blend pot be the same as adding a blend pot to say.. a jazz bass? or any bass with two pickups? i got parts to put together a true bypass pedal that i wanted for some of the cheaper effects i had laying around. i was wondering if i wired a blend pot like the ones used on basses would do the same in a pedal? to me it seems like theres no reason it shouldnt.. but is that all a blend knob in a pedal is? or is there some kind of buffer needed?
i've been trying to do something similar for a while, not quite got it sorted yet!! I'm told that it needs a buffer to work correctly, but as a relative electronic novice, i have no idea how to build one!! i tried some of the build your own sites, but noone really had what i was looking for. i will now be keeping an eye on this thread hoping someone may be able to help out!
It'll work with just a pot, but it may not work well depending on the circumstances. You best bet is a buffered solution such as those found here, here and here. For bass especially, the last link is the one I would go for.
Well, I didn't say it wouldn't work! It's impossible to nail it down really, but the "pot only" solution leaves you open to unwanted feedback. This is when signals interact due to the fact they are passively linked together via the pot. Wether it's a problem or not depends on many variables so the only way to be sure is to suck it and see!
Using a simple pot would only work if you used the pot to blend two fully buffered effects pedals. You cannot use a simple pot to blend wet and dry signals, you end up with a feedback loop. Adding a blend to a pedal can be as easy as adding one buffer and a pot in the right place. Finding the right place is the tricky part
oh no i didnt say that you said it wouldn't i was just wondering what situations would and wouldnt work
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