Audio Noise from monitors

[R2ria]

Good day comrades.

I am experiencing a very nasty issue.

I have Combo of 2 studio monitors (Presonus Eris E8) and subwofer (Presonus Temblor t10)

So it is playing just fine when i play it from Phone, TV other peoples laptop, even Bluetooth dongle.

But i get crazy amount of noise of all kinds when i connect it to my pc thru 3.5 jack on motherboard SABERTOOTH 990FX R2.0 am3+

Upgraded drivers, tried different types of wires between them and on the intake and wires all fine. Plugs and sockets were tested in different rooms and the result is always one.

PC works very fine with other speakers, headphones, microphone. No noise or anything that would unsatisfie.

I have Noise even when i connect PC to TV thru HDMI and then TV to Monitors. AS long as PC is in chain with speakers i always get noise, and it reacts to mouse movement.

NOISE STARTS ONLY WHEN WINDOWS ASKS FOR PASSWORD(Before that it is silent) 

Let me know if you have any ideas what it might be, and maybe which part of hardware is causing that.

 

[ProjectBox153]

It sounds to me like something on the motherboard is interfering with the audio circuitry. You could try to use an add-in sound card, to see if that helps.

[R2ria]

I don't have one. And none of my friends do.

No amp, no equalizer, no external sound card. 

If none will suggest anything that doesn't involve me to spend money on hardware i don't really need. I will get in few next days and post result.

[Glennieboyyy007]

if you have it plugged into the back 3.5mm port try the front one. i have the same problem and the one on the mobo gives a buzzing noise, but the port on the case doesn't

[Majestic]

All the other examples you mention have the DAC happening elsewhere. When you connect your speakers directly, you use the DAC of your motherboard.

Sounds like it has some EMI issues.

[R2ria]

On 1/3/2017 at 4:20 PM, Glennieboyyy007 said:

if you have it plugged into the back 3.5mm port try the front one. i have the same problem and the one on the mobo gives a buzzing noise, but the port on the case doesn't

Was away on Holidays. Had to buy other front panel scince the old ones audio never worked from the day i bought the case. 

And it still gives me the same sound. What next?> USB audio card? SO sad i have to get myself another device i dont really need and no guarantees that it will change anything. 

[R2ria]

OK, Same with USB SOUND CARD. I Will not even bother to put PCI EXpress sound card scince i am convinced that noise is coming from the case. 

Please recomend maybe there is anything to do with BIOS? So i think i have only one option of bringing something like amplifier in chain to see if it will be the same(BUT HDMI to tv from this mobo was giving the same trouble when speaker were conected by aux jack in TV.)

CAN PSU cause anything like that?Water cooling?  I am really out of ideas...