Since my new build, i have been going nuts trying to trace the audio hum in my studio monitors. I'm using Resolve 65a powered speakers patched through a Behringer xenyx 1204 mixer with the audio coming in from my onboard sound card (nvidea high def). My son had a similar sounding audio hum on his system and solved it by snipping off the ground lugs on his power cords, but that didn't affect mine at all, in fact it got worse. Any of you audio gurus have a process of elimination flow that i might try to narrow this down? My previous build used an EMU 0404 sound card that didn't produce any noticeable noise on that system, but this one is making me crazy!