Help with Stereo setup.
The reason people buy the dual 2-ohm subs is if they are running multiple subs. If say you are running 2 dual 2-ohm subs, you can wire them 3 different ways, paralell, series/parallel, or series, which would end up being 0.5-ohms, 2-ohms, and 8-ohms of resistance respectively. Therefore, you could run 2 subs on 2-ohms together, instead of buying 2 dual 4-ohms and wiring seperately to get 2-ohm of resistance.
Since you're going to be running 1 Type R 15, you would want to get the Dual 4 version, so you could wire it at 2-ohms and get the full power from you're amp to your sub so it can really pound

