Right now I have a Memphis 12'' M3 in my GTI, that is powered by a JL 300/2. I got the sub for free because it had a small tear in the surround. I repaired this and it has worked flawlessly for about 6 months. The box is a sealed 1.4 cu.ft enclosure. The next box is for a Elemental Designs 15'' sub. The box is a dual bandpass box. Outer dimensions of 37.5''x 18.5''x 19.75'' Chamber one is 3.5 cu.ft with a slot port 1x 15x 15 tuned to 25hz Chamber two is 2.5 cu.ft with a slot port 2x 15x 6 tuned to 55hz The final box is for a bunch of stuff. JL 1000/1- sub amp JL 250/1- sub amp JL 300/2- front component amp JL e2150- rear coax amp JL 12w7 JL 8w7 ADS 346 components- fronts Kicker KX2- sub crossover Rockford Fosgate 1 Farad cap Alpine IWA-W200 head unit The first two setups are leading to the finally of the JL system. The box is going to be wrapped in black vynil. Any comments or questions?