Need help Hum with the Mbox and external mixer

[cdp2004]

Need some help. When I run my Mbox straight to my powered monitors everything is fine. But when I run it to my mixer I get this hum in which I can hear the harddrive running. I've tried grounding everything possible thing. I've switched to balanced cables,trs cables. I've heard of people having this problem with the Mbox. But haven't heard a fix for it yet. I also have a M-audio sound card in my system that I keep disable.

Thanks in advance


AMD 2500 Barton
512 ram
Mator hard drives (2)
MSI

[Captain_Pants]

What kind of mixer?

I have a noisy Behringer mixer I try to avoid using.

[Rail Jon Rogut]

If it's a Mackie.. move it away from the computer... it's not shielded.

Rail

[cdp2004]

I'm using a Tascam M-08. Looking at it, it's not a ground mixer. But I've never had a ground hum until I plugin in my M-box

[cdp2004]

I will have to try moving it and see if that will help

[lemix]

cdp2004 ,
You should be powering all your audio equipment as well as your PC from the same, isolated, clean and properly grounded AC source.
A TRS balanced, quality cable to your mixer must be used. If still have "hum", try unbalanced from Mbox to balanced into the Tascam mixer.

hope this helps,
cheers,

[cdp2004]

I'm still getting the same problem. I'm wonder if I got a USB PCI card would that help

[cdp2004]

After weeks of trying I have found the answer to it in my system. It wasn't the MBOX, PC or Mixer. I found that my EMU keyboard I had plugin into my mixer was the cause of a ground loop. So I had to put $1.50 ground adapter on it and it worked like a charm. If I had known that I would have done it sooner. Hope that helps.

[Jorge442]

what´s a ground adapter?


thanks

jorge

[cdp2004]

It coverts a 3 prong plugin into a 2 prong to break the ground. You can pretty much get them anywhere. I picked one up at Home Depot