I am setting up a home theater system and as soon as I connect the HDMI cable between the receiver and the TV, I get a nasty 60 hz hum through my subwoofer. The TV is on a separate outlet than the ...

Has anyone had any experience using HDMI fiber optic converters/extenders? I have a weird ground loop problem in my system which I traced back to my HTPC. I get hum whenever I join the grounds between ...

When [Denki Otaku] bought a ¥1,200 (roughly €6.5) XLR ground loop isolator off Japanese Amazon, he initially didn’t suspect that anything was off. Since they’re fairly simple devices, with basically a ...