10A 250V~ CABLE NOISES (ELECTRICITY?)

Hello community, It has been a while that I didn't came here, but damn, I came with a damn issue im tryin to solve 2 month's ago.

I have an MPC 2500 SE connected to my external audio device (it doesnt matter but it is a x-station 25), I've already tried all kind of stuff, since connect my headphones directly to "phones" in on mpc. But the problem is not on my soundcard, or monitors, or even other stuff.... The problem, I FOUND, is in the damn electricity? Now it goes beyound my knowledge. EVERYTIME I plug the mpc to electricity (through 10A 250V~) noise will start instantly, its so anoying, so anoying. I CANT GET RID OF IT. I tried every plug in my house, with different cables and ****. Please someone help me on this. I CANT PRODUCE BEATS ON MY MPC. Its frustrating me a lot.

PEACE.

(When I connect my headphones to my MPC I cant hear any noises, but while Im hearing through my external audio device the noises are frequently there, like oscillating wind.)

(Sorry the double post, but I really need this, and I know theres a lot of folks with the same problem.)

This may or may not help but...

Don't run mains cables and audio cables side by side (applies to monitor feeds also)

Try to keep them well apart, if their paths must cross audio and mains should be at 90 degrees to one another.

It could be ground hum.

Have you tried using the MPC in a different location to see if the problem persists?

clint246clint wrote:This may or may not help but...


Have you tried using the MPC in a different location to see if the problem persists?

Yes, I did it. Nothing solved. But I also tried separated cables... its weird...

Sounds like a ground loop problem.

If two different pieces of audio equipment have two different ideas of what Ground/ 0 Volts is then you end up getting mains hum. The cure is generally a DI box with a ground lift switch, but there are sometimes other tricks like soldering a small resistor in series to the shield connection of the connecting cable.

Sound on Sound have various stuff on this :-

http://www.soundonsound.com/sos/nov02/a ... on1102.asp
http://www.soundonsound.com/sos/1994_ar ... loops.html
http://www.soundonsound.com/sos/nov04/a ... oblems.htm
http://www.soundonsound.com/sos/jun02/a ... iboxes.asp

http://www.channld.com/hum.html

Thanks, ill check it out