The calming sound of the ocean or a steady rainfall can be easily accessed on Apple iPhones with a white noise feature that some users initially never knew existed. For interested iPhone owners, they ...

I have a set of Pioneer DJ DM-40Ds and I noticed they make a constant sound when plugged in. Its a high pitched chirping sound, almost like the whine from an old fan. I determined it seems to be ...

I've got a 6 year old JBL 10" subwoofer (home theater sub, not a sub for a car) that has suddenly taken to making a constant rhythmic knocking sound, even when not in use by the receiver. The sound is ...