Live power buzz? arrgh help please!

[zazamoth]

Hi everyone! I need a little help please!

I have just taken my band into the studio and we have been in for a couple of months now!

I'm using Live 7 on my laptop hooked up to an M-audio fastrack ultra 8r which is ran through a 10m balanced loom (jack to XLR) which runs straight to the Studio desk (various makes)

now this system runs perfectly but If i have the power cable plugged into the Laptop I'm getting a horrible buzz through the PA. If I remove the Power cable for the laptop the buzzing stops
but I don't have a good battery life on my laptop.

So I thought I would ask on here as I thought most of you would probably be using a similar set up..So could anyone help me, how do I eliminate the buzz

Thank you for taking the time to read this and any help anyone could give would be great

Many thanks

Zaz

[oddstep]

you're in ground loop hell.
http://en.wikipedia.org/wiki/Ground_loop_(electricity)
Its worth researching what you can actually do about it - it terms of consolidationg power sources, physical filters you put on the audio outs and so on.

[zazamoth]

you're in ground loop hell.
http://en.wikipedia.org/wiki/Ground_loop_(electricity)
Its worth researching what you can actually do about it - it terms of consolidationg power sources, physical filters you put on the audio outs and so on.

Ah I thought It would be something like that! I'll have a read at the link you posted, thank you for posting it. It's not really bad but on a larger PA I think It would sound a lot worse! thanks oddstep! I'll go read that just now!

Cheers again

zaz

[slatepipe]

hi

i used to have that problem - my laptop was ok at home but whenever i plugged it into a place's PA then it would buzz like mad

i asked around and got this :

http://www.maplin.co.uk/Module.aspx?ModuleNo=33172

works fine, no problems anymore

[Rabalder]

Get a loooong cable and try different outlets in surrounding rooms.. The futher you go the better.

[zazamoth]

hi

i used to have that problem - my laptop was ok at home but whenever i plugged it into a place's PA then it would buzz like mad

i asked around and got this :

http://www.maplin.co.uk/Module.aspx?ModuleNo=33172

works fine, no problems anymore

outstanding thank you very much mate!!!
Thanks Very much slatepipe think I will be walking donw to maplin tom! cheers mate

zaz