trust me mtx...after type r, you wont like L7...unless if all you want is mega loudness...but just a few weeks back you were talking about an SQ system and your car has some spirit in it, because whatever system you put, it turns off
@splfanatic: dude i have a very limited exposure to subs...never heard 3001spl..but i can tell you this, type r 15" is a mega A S S sub. you can feed it 1200rms if you want. and it can indeed go very very loud.
too many factors involved in loudness, not just rms...Geforce can explain this to u better