First off i've done a few head units and things but i'm new to amps and subs so i'm a lil confused by the power ratings on this amp.
http://www.sonicelectronix.com/item_...-+EV1500M.html
I've looked at alot of amps but this is the first one i've seen with the rms rating at 4 ohms and the max power output at 2 ohms. so why are they different and should i get 2 ohms subs or 4?