Hi Ryan. First let me say that i love powerfull deep bas.!!
Before i began this project i had already added 3 layers of sound deadening material to the oem subs.! After installing the gear im not goner change the oem subs, why..? because they pump deep, low, and loud .!!!! but keep in mind that thers three different oem subs from BMW.Power to the sub=1x400 real watt in 2 ohm (Focal Fp 1.800) and 4x75 watt to the doors( Focal Fp 4.75) About equalizer, yes !!! you must use equalizer.!!!
In my case, like you know . I use the Audioson bit one, and after many hours"days" of adjusting, i can tell you, it´s worth every penny.!
ps: the front crossover is set to -3db for the tweeters.
Music: Funk ,hard pumping gangsta rap,heavy rock, well all kinds of music.
Mobridge 1000 . was it worth it ????? I think like you. it´is to expensive.!!!
But that´s the only way to get a "clean" signal from the headunit. Otherwise you will be feading your new sound with the crap sound coming from the L7 amp=Bad dynamic + noise.