Hello,
I sometimes experience a VERY loud buzzing sound while using the device (either recording/mixing or just using it as a sound interface while watching a movie online). This will result in an error from NI, but I forgot the actual error message although it's very generic like "an error has occurred." Just to be clear, this sound isn't like background noise that's always present. This sounds like someone hit the buzzer on a game show, and it's very loud.
The KA6 is connected to two speaker systems: Out 1/2 goes to a Headrush FRFR, and Out 3/4 goes to a pair of Mackie monitors. I am using shielded balanced cables to connect the Headrush, and unbalanced shielded cables to the Mackie (Live Wire Essential). The cables are connected directly to the speakers (no adapters).
The Mackie monitors sit on isolation foam on a glass table. The Headrush is propped up on a guitar stand that I'm using like a speaker stand. The cables connected to that are long, and I have them coiled neatly right below it. The ground button on it is currently pushed in, and the diagram says that it is grounded not lifted (not sure if I used the correct terminology there).
The power source of the laptop I am using and the Mackie's power source are connected to a different multistrip than the Headrush. There are also other cables that are near the Headrush (two guitar cables, a usb cable to connect my guitar interface, and another laptop power source that's just sitting there but not plugged anywhere).
Given all that, could any of those be the cause of the buzzing? I was planning connecting the laptop and Mackie power supplies to the other multistrip (Fuhrman) so that everything is connected there.
Appreciate any useful input :)