Speaker hum

I have a set of older harman/kardon speakers. When I turn them on there is a humming nose coming from them. It is a steady hum, it doesn't change volume when I turn up the speakers. Also when I turn them off there is a pop sound. Could this be a problem with the speakers or with my computers on board sound.

Your onboard should not be causing the noise, try different speakers that will surely tell

Are there any power cords running near or over the cable to your speakers. If so try moving them. Do you have the speakers sitting near a cordless phone? If so move it.



You could be getting interference from other devices near your speakers or the cord.



Also, inside your case, try moving the power cords around.



Those speakers are powered by plugging them into the wall right? It could be the amp inside of them going bad.



It could be the drivers for your sound card. Try either updating them, or removing and reinstalling the drivers.