I recently received some studio speakers as a gift from a friend(A pair of 'MR5 MK3' Speakers). I got home and immediately attached them to my computer(stand RCA input)(through motherboard). There was a buzzing noise, and the volume seemed really low. I then plugged them into my phone and there was no issue. I checked a few troubleshooting forums and videos with no luck(I didn't receive a manual). The cords go straight from the back of the speakers to the back of the computer(about a 2.5 ft).