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Old 22nd December 2009   #1
Jakeman1086
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Joined: Sep 2009
Posts: 179

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ground loop (I think?) problem

I know very little about circuits, so I really need your help.

The picture represents exactly what my setup consists of right now.

I have high frequency "chirping" noises coming from the speakers that tend to react to mouse clicks and cpu activity. I completely solved the problem for a single speaker by inserting an IMP2 DI Box Whirlwind / Direct Boxes in between my audio interface and that studio monitor. The volume was significantly reduced and I think I might be losing high frequency content though.

I'm thinking the problem is interference between the CPU and the firewire connection which are very close to each other on the motherboard. Dunno.

What should I do?

*buy a PCI card with firewire to get the firewire connection farther away from the CPU?
*use ground-loop solving strategies (telescoping, etc.)? Please be specific. I know very little about the subject.

Attached Thumbnails
ground loop (I think?) problem-my-schematic.jpg  
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