Can subwoofers get louder?

YES without a doubt it will knock HARDER! Kicker actualy makes a zx1500 I believe that puts out a "true" 1500watts Rms.. They are extrmly good wen it comes to amos.. Either kicker,alpine, or audiique just afew off the too of my head that truly put out what they claim unlike MANY other companies.. I always try to match rms exactly even or if pissibke go a "little" over (so 100 for a single ir in ur case 100-150watts (*max nothing more!*)rms over for the pair) you will without a doubt notice a pretty considerable difference from 1200w to 1500w to 1650w. U can get the kicjer for sumwhere around $600 wich isnt bad for REAL TRUE power.. I know u said money isnt an issue but I if im not mistaken chek out sonicelectronix.com I thought I remembr them sellin it for around $400 to 500bucks! Good luck dude n email me n let me know how much happier u are after the swap! joeg1488@yahoo.com