Boards
boring audio/music tech/physics question:
in my band, i use the headphone socket from my laptop to connect it to a small mixer, which then goes into the PA, usually via a DI box.
on many PAs, and at home going through a guitar amp, if my laptop is plugged into the mains there is a load of humming. noise humming.
generally i can just solve the problem by using hte battery power on the laptop.
BUT on some PAs there is no humming, plugged in or not.
SO:
what is the difference between the humming PAs and the non humming ones?
also: neighbours just started. its pretty high drama.
lots of po:leece