I just bought this 5.1 surround sound stystem https://www.amazon.com/gp/product/B0195HV2NC/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1 and brand new they are crackling while projecting audio from my computer. I tried the Bluetooth from my phone and they dont crackle when i play music through my phone, only my computer. It plugged in to a power outlet and then a usb 3.0 connects from my sub woofer into my computer. I have tried literally all my usb ports on my computer and my computer is about 3-4 years old but i dont think it would be a big problem. Please help!