How to eliminate 'hum' or noise from laptops connected to speakers or PA equipment.
Great video here on how to break 'ground loops' which is what causes noise/hum on amplified speakers or PA equipment connected to a Laptop PC.
Curing Laptop Noise and Ground Loop Audio Interference - YouTube
This is something which has plagued me for years, I always knew it was a ground loop causing it, but I never knew the cure was as simple as changing the type of powersupply you're using on the laptop, obvious when you've watched the video.
Nother Video to eliminate the noise
Originally Posted by maniac
Nice video. Here another one.