What is the name of the input for the subwoofer and is there any way to have my old sub work with this? My old one had a positive and negative wire like the red and black speaker inputs. Any good subs for under out there under $300?
What you currently have is an unpowered subwoofer. You could hook it up to that receiver by running the speaker cables for the front L/R speakers into the sub and then out from the sub to the speakers.
With that said, you would likely see better performance all around from a powered sub. In the