No idea what 85% you tried but I would start with buying some
ferrite cores. 1/2" or larger for power cables and smaller for others as needed. The trick is to have a large enough diameter opening you can loop the cords two or three times inside it. This could also be needing to replace your cable from the sound card/computer to the speakers with ones from another brand. I would do this and then worry about needing a digital interface + XLR cables
Thank you for suggesting these ferrite cores, never heard of them before but them seem as if they will tidy up everything. Appreciated
well from the pic it looks like you have an modular PSU but it looks like you've got every cable it came with plugged into it when really all you need is only those cables needed to power devices any others shouldn't be in there also buy and use cable ties to tie cables away from addin cards like audio cards they're really sensitive to RFI also screw those cards to the case with a screw ie: the GPU and Audio cards don't leave them dangling like that
I likely do have every cable it came with plugged in. This was my first computer build so I was quite anxious about messing anything up and seemingly just made sure everything had a place to be plugged in, which turns out is not the way to go about a proper build. I've purchased some cable ties omw home from the gym, when I have some spare time later tonight I will remove excess cords and tie things together in a neat fashion.
Not sure where those little extra screws to hold up my GPU and audio card went so I'll try to buy some at Micro Center tonight -- speaking of which, I am actually returning the internal soundcard, being that it did not solve my issue and I will instead purchase a USB interface.
Some thoughts on your build:
*Looks like you installed the AIO according to Corsair's directions which makes sure that the AIO performs its best while ignoring the needs of the rest of the build. If that fan is blowing in, and you have a fan in the front blowing in, where is the air to go?
*@Athlonite just beat me to the modular cable issue.
Further suggestion:
Try disconnecting the front port audio cable (from the motherboard) and see if the noise goes away. Next, try disconnecting the internal USB cables. If that fixes it, go buy a better case.
Beyond that, you might need to remove your components from that case and assemble them on cardboard to see if it's something from the case. If the I/O panel has little "fingers", it's easy to have them end up in the wrong place (I've had to disassemble my own systems even though I thought I had paid close attention to this), which can cause problems.
How would I go about ensuring the Corsair fan blows air out? Honestly I assumed they would not have a cooling fan blowing toward the inside.. this doesn't quite make sense to me at all.
I'll have to do some research into "disconnecting the front port audio cable from the motherboard" as I have no clue what I would be doing and don't want to risk permanently damaging any hardware. Will update tonight or tomorrow.
The I/O panel does have little fingers directed toward the interior of the case, but they are all attached and accounted for from what I've just looked at.
Appreciate all the help guys!
From what I've gathered from Hugh at SoundOnSound, he said that purchasing a USB interface with two individual XLR cables (one for the left speaker, one for the right) should provide a balanced audio input and solve my problem. He assures me the issue is coming from using an unbalanced dual 1/4" to 3.5mm aux cable.
