iam trying to hook up my teak 80watt modle cd-x10i to my pc the sub has a 9pin plug an a set of rca an my computert has three 3.5 mm plugs in back. two in front headphone an mic. how do i connect the sub to my pc ,do they make an adaptor or do i hard wire a 3.5 mm to it an where do i splice an connect