First of all welcome and glad you could join us First were gonna need to know some more information such as amplifiers you will be running, budget for subs, electrical upgrades to the car if any? What vehicle or how much space do you have? The power levels you can throw at your subs depend on listening levels, the size of the enclosure, just for music or burps and etc. There is no such thing as underpowering a sub, a sub doesnt need double or triple its rms to show its output. Any sub in its recommended enclosure with rms power will sound good and get loud to its capabilities. Sure they could probably take more than rms but it all depends on a lot of factors, hence stated above. Talk to IA and ask them what there limits are and under what conditions dont let a You Tube video mes up your equipment, somebody with that amount of power has there system set around the amount of power there sending there subs.