[shonor6]

Hello. My M-Audio BX5's produce a small static "hum". What's interesting is that the sound is monotonic, which means that it doesn't change with volume. I can hear the hum even if my computer's volume is muted. When music's playing it's a bit less obvious because the music overvolumes the static hum. The only way to stop this annoying sound is to turn off the speakers, which I obviously do not intend to do.
 
They are connected to my Macbook Air from 2 TRS connections to a 3.5mm Audio Jack. Might that be the problem, because of the connection's low quality? If so, what are my options?
 
Cheers.

 

[mtkversion]

One thing you could try is to isolate the speakers to their own power outlet or power strip. Doing this fixed the same issue I was having with my speakers.
 
If that doesn't work, it could be noise interference from your computer.  Getting a USB DAC or sound card could fix the issue.