I've already tried to do that, but I wasn't sucessful with my phone, because the sound is not audible on the recording. I'll try to find another way to record it, and I'll post it.
I have Logitech Z4 speakers since some years ago, but since some weeks ago I'm listening a strange noise (like some interference) in the left speaker (I think it comes from the upper "ball"). Sometimes I hear that noise from right speaker, but it's lower.
This noise appears every time the...