Buy a sub-woofer cable. The gauge needs to be thicker to allow proper passthrough.

I have used both personally. I find the bass response quicker and the bass tighter.

Check the link below for some options

http://www.futureshop.ca/en-CA/category/subwoofer/25331.aspx?path=81aaaa055a8d565526d272b6300f953aen...