Problems Connecting To PA / Amp Options

[mrchu]

When connecting my laptop to various guitar amps and PA's I've had the same problem each time, I get feedback which seems to be the equivalent of PC background noise. It changes when you open folders and carry out tasks on the laptop...it's as if you can hear the laptop think....I've had this problem when using the onboard laptop chipset, an Audigy2 PCMCIA and an M-Audio FireWire solo....do I need to connect the laptop to a pre-amp or something prior to connecting to any form of amplified speakers or PA? Or is it something to do with cables? Or perhaps I need a very specific type of amplifier for the laptop?

This problem does not occur on typical PC speakers (GigaWorks S750, headphones etc..) so I know the system is working fine...it's just a case of me doing something wrong or missing a required piece of hardware.

Any help is greatly appreciated

This post has been edited by mrchu: Nov 14 2005, 14:29