Quote:
Originally Posted by
briankoh42 
OK so I'm having a ground loop problem with my studio monitors. I'm kinda new to the studio but I'm wondering if a DI box would help. My current setup: pc -- m-audio fast track -- power amp -- ns-10's. This puts out a very silent white noise with amp set to lift and a loud buzz with amp set to ground. I am just looking at cheap passive di boxes to put in between the interface and the amp. Will this help the buzzing?
Buzzing, ie., high frequency noise, is usually RFI/EMI sourced, not ground loop. Ground loop noise is 60Hz hum. PCs are rather notorious for causing noise issues, usually because of cheap power supplies. But as for white noise, that's probably sourced from the sound card having poor signal to noise specs. Track the source down by first connecting the power amp to the speakers, and then adding devices one at a time back through the chain.