Not sure what's up

[Xuluu]

Hey guys, I recently purchased some polk audio speakers from GoodWill until I get the money to buy some decent ones and when I plugged them into my computer they are very quiet. I tested them out with my phone and they get pretty loud. I am not sure what is going on here and was wondering if I could get some help. I have an Asus p8z77 v-lk motherboard

 

[Maygentria]

You're probably going to need to hook them up to an external amplifier.