Subwoofer+random speakers

[LadderOfChaos]

Hey everyone, so i've been using Edifier speakers for well over a year and i quite like them but i thought i could connect my old subwoofer and get even better audio.

So the speakers are https://edifier-online.com/us/en/speakers/studio-r1280t-2.0-powered-bookshelf-speakers they use a single 3.5mm to 2x cinch to connect to my pc and from main speaker to the 2nd speaker is just a generic audio cable(2 copper wires). The Subwoofer is from a creative inspire 5.1 system, it have 1 main speaker that controls the on/off and volume and 4 empty female cinch for the other 4 speakers. 

Ideally i would like to connect to one of the empty cinch but i doubt it gonna be that easy. Hopefully one of you can guide me thru the process. Thanks in advance.

[emosun]

well both systems are powered and separate so you'd just split the audio input and run them both separately at the same time