Several weeks ago, I moved into a new home. In office, I have my computer set up with a set of media speakers (older model of Logitech Z-550's). Every now and then the speakers will make a popping sound that is quite painful to my ears. I can recreate the sound when I flip on light switches that are not connected to any actual light or electrical devices, i.e. the outlets they're associated with aren't used (they're blocked by furniture). Other times it happens randomly -- I'm actually not sure if it's truly random or if it's caused by activity of other people in the house (in the event that it actually is a electrical wiring issue).
So I was wondering if this was a electrical wiring issue, which wouldn't be a DIY project by any means, or could it be possible that the popping noise is caused by the speaker wires coming into contact with other cables from my computer, printer, and other electronic devices. Or is it something I haven't thought of?
Any help would be appreciated!
The speakers all connect to the subwoofer, and the subwoofer is plugged into a Tripp Lite surge suppressor that was designed for audio/video equipment (I forget the model). The surge suppressor "grounded" and "protected" lights both check out (both show a green light).
The sub does not have a ground pin (assuming that means a 3-prong plug). It only has 2-prongs.