fekalizatorius Posted March 3, 2009 Share Posted March 3, 2009 Hey! After messing with the ashdown eq (added more mids + trebble) I started noticing, that my bass (yamaha rbx-375 was giving LOTS of feedback/static buzz @ 50% of output power (Input at 3 o'clock). I tried to see what the problem was. Sources deducted from posibilities: *Efect loop - disconected, still lots of buzz *Cables - switched them up - same deal *EQ setting - switched back to flat, nothing *Amp - tried it with my headphones via Zoom B2 - *buzzzzzzzz* *Clothes have a static charge from moving - sorry, left my Adidas athletic wear in the dumpster. *Cell phone, rings, belt buckle, genital piercings, PC, other gadgets - none present - amp/bass in a seperate empty room, where no possible interfierance can be found So that leaves me with my bass being the problem. I guess It's either my humbuckers (passive), or the active 2-way eq. I tried turning down the "tone/brightnes" knob half way, I noticed something. The buzz is gone. But I noticed also, that when I touched the knob when it was full way up, the buzz stoped. That means, that when that knob is earthed via my body, the buzz stops. I know the issue has to do with the potentiometer giving off some current, therefore cousing the buzz, whenever it tries to ground itself. What should I do? Cheers, Fek. Quote Link to comment Share on other sites More sharing options...
BOD2 Posted March 4, 2009 Share Posted March 4, 2009 Sorry, but the first thing you have to do whenever tracing an active EQ problem is to try replacing the battery. A dying battery can cause all sorts of problems so you have to rule this out first before trying anything else. Quote Link to comment Share on other sites More sharing options...
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