Tuesday, June 9, 2015
Mid-Fi Electronics Demo Tape Fuzz
Here's a pretty unique fuzz from Mid-Fi. Built around a dual opamp, the Demo Tape Fuzz recreates the sound of a guitar being played directly into an old 4-track cassette deck. It features a 2-band EQ in addition to the Volume and Trim (gain) controls. I've laid it out for board mounted right angle PCB pots mounted from the solder side.
Is LM4558N the same to JRC4558?
ReplyDeleteWhat would be the best to replace it?
The JRC should work fine.
Deletethanks man. I'll verify this one
DeleteDone, verified.
ReplyDeleteAwesome!
Cool. Thanks man!
DeleteSuch a cool circuit, I want to build one again. Your layout looks perfect.
ReplyDeleteI wonder how it'd sound with switchable diodes in the feedback loop... :)
no encunetro el LM4558, por cual otro puedo reemplazar ??
DeleteAny 4558 should work. JRC, TJM, KIA, etc.
DeleteI just tried building this and when testing before boxing up, I get signal through the circuit but no effect. So the volume pot does its job but there is no gain, treble or bass control. Any ideas why this would happen?
ReplyDeleteI was mistaken, all the pots work, except gain. I can control volume, bass and treble, but I can't get any gain. Any ideas on this?
DeleteHi, Would you be able to use a TL072 here , or would the LM4558 equivalent nte778A be more suitable
ReplyDeleteI'm guessing it should work. I breadboarded it with a LM358 while I wait for some LM4558s to arrive. It sounds good enough that I'm confident in starting to put it in perf board, with a socket of course.
DeleteI built this one, it works pretty fine but the Trim pot does not work that lineal, at the last 4th of the pot it is noticeable the change in gain, the other 3/4 of the pot barely does anything, is this normal? I tried 2 different lineal pots.
ReplyDeleteI used mounted pots and looks like on Eagle you placed them on the wrong side, so the drill template doesn't match. It was a headache until I noticed what was going on (first perfboard build). I just rotated 180ยบ and it's fine, but bothers me aesthetically that pots are so low in the enclosure and close to the switch. The other option is to build it as usual but all the pots would work in the oposite direction (volume decreases clockwise). Thanks for the layout anyway :)
ReplyDelete