Hi, I'm planning to buy a pair of JBL 305 powered speakers and I already have a Polk Audio PSW10 powered subwoofer. I'm clueless on how to connect them to my computer. My old speakers have a subwoofer out jack that I can connect them with a subwoofer cable. However, the JBL 305 and the subwoofer only has input and no output jacks. Can I just buy a 3.5 mm TRS to Dual 1/4 in TS cable like this one https/www.amazon.ca/Hosa-CMP159-Stereo-Breakout-10-Feet/dp/B005HGM1D6/ref=pd_bxgy_267_img_2?_encoding=UTF8&psc=1&refRID=V5EGNFG2CGXXP18VG1GS Dual 1/4 TS end to the JBL 305s and the 3.5 mm to my motherboard's green audio jack? Then buy a 3.5mm to dual-Male RCA Cable like this one https/www.amazon.com/AmazonBasics-3-5mm-2-Male-Adapter-Cable/dp/B01D5H8KO2/ref=sr_1_3?s=electronics&ie=UTF8&qid=1513749138&sr=1-3&keywords=3.5mm+Stereo+Audio+Male+to+Dual+RCA+Male the dual-male RCA to my subwoofer and the 3.5 mm end to my motherboard's orange audio jack? Will this work? Thank you in advance. It would be nice if I do not have to get an amp or audio interface.