well i joined the bandwagon and just ordered a level 4XL 15" but i have a question. im gonna use my last subwoofer as an example i had a 15" kicker L7 and it was 1000RMS but what they dont tell you is thats only for a sealed box when its in a ported box its only 750RMS. so on the DC website it says 1500RMS for the level 4XL and it only recommends a ported box so is it 1500RMS for a ported box? i just wanna make sure cause i have heard the bigger your box is the less power you can give a woofer safely and the smaller the box they can handle more power.