hum noise when using amplifier.

Kilau · 18 Jun 2015 at 23:35

Hello all,

I received a pair of KRK rockit 5 3g today. They work when plugging a phone or cd player into them, but when I plug them into my pc I get a humming noise, like you can hear the pc working through the speakers. When I move the mouse the sound intensifies.
Would and external sound card fix this problem? Or would you recommend a ground loop isolator. I'm currently just using the onboard sound card. My set up is:

Gigabyte 297X - UD3H-BK with Devils Canyon i7 4790k
Geforce 970 ex oc Black edition
Team vulcan red 16gb Ram ddr3 24000 mhz
and a 650 watt corsair

thanks!

Kilau · 19 Jun 2015 at 10:29

Thank you for your replies.

What sound card would you recommend? And would this definitely stop that god forsaken hum?! I have tried both the front and back ports, but they both get the interference.

If I buy a ground loop isolator as a short term solution, what is the long term?

Thanks!

Kilau · 19 Jun 2015 at 10:58

Ah right, cool.

Could you recommend me some external and internal sound cards? I'd really appreciate that!

Kilau · 27 Jun 2015 at 09:32

Sorry to bump this but...

I bought a focusrite sapphire 2i2 so I could use the balanced TRS outputs, this has unfortunately not fixed the problem. I don't think I described the original sound very well, it's less of a hum and more like higher pitched static (think dial up but less severe). The sound worsens when moving the mouse or moving a window.

I noticed the sound becomes particularly bad while using the BIOS.
I have tried swapping the usb port for the mouse.

http://vocaroo.com/i/s1inBCaGdTpW

The link is a recording of the sound that the speakers make when you move the mouse.

edit: Just tried playing GTA5 and there was a constant loud buzz coming out of the speakers

Thanks!