I actually have a pair of TC2+ 10" subs. Marketed as Oaudio... O Audio - TC Sounds TC2+ Subwoofer Drivers - 10", 12", and 15". 400w each is enough, but 500w is about ideal from my experience. These are almost the same as the Soundsplinter RLi. DVC 4 ohm I believe, but I would have to check...