noise coming from my Studio Speakers even when cables not connected

[ShiWarrior]

I have some M-Audio studio speakers which i connect to my PC and my CD player

When i have them connected up or not, there is a quite noise coming from it, not sure how to explain it, doesn't sound like interference

They are located on my desk either side of my monitor

if i turn the volume up to max it does not increase in decibels
any idea what could be causing this?



music etc come through fine

 

[ShiWarrior]

ill see if i can record the sound

thanks guys

 

[ShiWarrior]

very strange
turned them on today, no noise at all lol

ill connect them up and have a listen, maybe it will come back

i dont think its hmm or a hiss

 

[ShiWarrior]

Are they anywhere near you wireless router?

Seen that cause a noise through speakers before.

yes they are, the only place i can have it unfortunately