I'm looking for a simple solution to an annoying problem.
On my PC I've got a set of external (mains powered) speakers. I've got a couple of annoying problems that I'm sure should be rectifiable, but I don't know how!
- When the speakers are turned up high I hear a mains (60Hz) hum.
- I sometimes get really heavy interference from what sounds like local walkie-talkie / taxi service / emergency service (mainly noticable when the speakers are (i.e. powered up) but have no audio output going to them.
Any ideas how to stop this?