Hey everybody!

i got a problem with my Sp404:
I got the SP connected to my mixer via chinch-cables. Sometimes, when the sp is running for a longer time, a get a very anoying humming-noise (and it gets louder and louder), which is imediately gone after i un- and replugged the chinch-jacks.
Does anyone else have this problem? Did you ground your sp? Could this be the reason why i got this problem?

thanks for help!

Ahhh hmmm, maybe get better quality cables...alot of people neglect how much of a difference quality cables make! Of course this might not solve your problem. Watch what the cables are rubbing against. maybe something else is causing the buzzing? like with guitar amps if I have all my electronics running in my room(lights, tvs, etc.) can cause buzzing! so experiment! we learn by doing bro