mach 460 data cable (line out or speaker driver)?
 

I have a Mach 460 in my '02 GT and an Infinity Subwoofer I want to install. The Infinity can accept 'rca line in' or 'speaker tap' type inputs. In my former car, I had it wired via 'speaker tap'. I searched and read all about the data cable. Is the data cable 'line out' or 'speaker driver'?