I guarantee you swapping for 2 12w7's would *not* gain me in that application.
Why? Because I'm only getting 1300 watts total... simply put. 11 volts and impedence rise... both bad bad things power wise.
Would w7's be louder @ 30hz with 1000+ per woofer... hell yea.
As far as "do subs matter".... yes, they matter alot. Its not 100% box. THe main thing is effeciancy... you can make an effeciant sub loud if you know what your doing, but ineffeciancy is hard to get around, particularly when the sub wont handle much power. Generally you will get no more than a 3db swing assuming the sub can handle the power. 3db isn't night and day, but its definitely noticeable.. and a BIG BIG deal on the meter.
The type R line is superb... PERIOD. No money involved, no rules. They get loud and sound good, flat out. They handle whatever power you can throw at them for short periods... particularly the 15. The 15 is an *extremely* strong sub and if tobias (sblazer) would man up and let me drop in the R against the SX in his blaze, maybe he'd realize how good it really is //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif. Fun comparison anyway.
