I have a rockford fosgate 12" punch amp and the rms of it is 400 watts. will i blow the speaker too easy if i put a 500 watt amp on it. I will break in my sub before i start cranking with the 500 watts and i still wont turn it up all the way then. even if i take precautions will this cause too much damage. should i just go ahead and put on a 400 watt.