Static-like Sound from Tweeter?

Have recently noticed a static kind of sound coming from one of the tweeters of my Totem Hawks. Only notice it on some (Not all) quieter music and only when close to speaker - i.e. can't really notice it ten feet away but do hear it 3-4 feet away. Not there when no music is playing.

Any ideas on what this is?
Ag insider logo xs@2xitball
Try reversing the right and left channel from the source (since its the easiest) and does stay in the 1 tweeter? If so I personally would reverse the speaker connections to determine if its the source speakers amp or preamp.
Okay - it moves to the other speaker when I reverse channels at the source and I switched interconnects and it still did it so not the cables. Upstream I have an Olive Music Server connected coax to a Benchmark DAC that then goes straight into the AMP. So I plugged my Headphones into the DAC and I get the same thing through them. So clearly coming from DAC or Music Server (or coax cable). Will take DAC out of loop and replace with a preamp that I have and see what happens.

Thanks for the help thus far!
Well - very interesting. It is the Benchmark DAC. I even switched coax cables to be sure it was not the cable. That surprises me given all the other things it could have been. Guess i will have them take a look at it.