MODEL: YST-SW216

FOUND ON: Tigerdirect.com

LINK: http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=3347002&CatId=4601

question: do need a Y-cable for this sub for it to work properly. i had a powered subwoofer once before and it had only 1 input on the back. This yamaha sub has 2(if you look at the pictures) is it something to do with the extra speaker inputs. i could probly do more research but i think this will be quicker. i was thinking b/c it has two i would get a Y - Sub - Cable and just plug it in.

Thanks for your time.
i'd look in the manual on there, but it doesn't work.