It can be wired either 2 ohms or 8. Simple as that. A single VC sub can only be wired one way whereas a DVC can be wired 2 ways. Multiple subs with DVC gets a little tricky. IF your willing to read and learn more about it, go to http://www.jlaudio.com and look under tutorials under wiring. Always helps me out when I wire up subs. Hope this helps.