Hum and other sounds from speakers

[raventy]

Hey guys,
On my Crisis Zone Delux machine there is a hum and other various more high pitched noises which come out of the speakers. Interestingly enough the noises seem to change depending on the image displayed on the tv screen. Typically when a lighter image is shown the noise gets more high pitched/louder. Anyone know why this happends? Thanks!

[fiscap]

This could be the result of a ground loop somewhere in your system or feedback through an inexpensive on-board soundcard.

The first thing I would try is to open up your mixer through your Volume Control properties and mute all unnecessary inputs - i.e. Line-In, Aux, Microphone, etc. This may help you isolate where it's coming from.

Can you provide more details as to what your system looks like and how it's being used?

Whoops - my bad! I didn't see that this was related to a specific upright cabinet. My apologies, although it is possible that there is a ground loop somewhere in your audio path. I wouldn't be able to help you troubleshoot it without seeing a schematic of how the cabinet is wired.