im about to buy this Rockford Fosgate 900 watt amp off my buddy, right now my set up is 1 kicker 12" cvr its 400 rms and 1000 peak i think and a mtx thunder4202 amp its like a 250watt amp, if i change amps and turned the volume a bit would that lower the wattage level so my sub wont blow after 2 songs? lol i probably sound retarded but i hope someone understands what im trying to ask