Well, decided to throw a system in the trunk of the Beemer.
Going to be 2 10s built from Audiobahn motors powered off a PPI S2000.1. If that doesn't give me enough power, I've got a Popcorn Sounds 6k ill use. Will be integrated into the OEM system using a custom wiring harness and Navone LOC. Electrical will be stock battery and 2 Kinetik HC600s to start. Depending on how that does, may upgrade the stock batt to a Kinetik HC2400 and add a couple more HC600s. All Power Cable is 1/0 Welding Wire and speaker wire is 8 gauge OFC.
Carboard mock up of the box to ensure fitment. Amp will go under a false floor and batts to the side of the box. Box will be 1.9cuft with 5" Aero tuned to 35 for daily and 40 for comps.
The subs I will be making. Thanks to Fedex, I get to rebuild them. Carbon Fiber Cones, DD 9500 Baskets, Dual stacked 7.5" Spiders, 3" 4layer/8layer coils (haven't gotten to measure the gap yet to see what will fit. FedEx really dragging their feet with the claim)
The Amp. PPI S2000.1D. Rated at 2krms @ 1ohm. Supposedly will run at .5ohm. We will see, couldn't find a lot of info on this amp. Worst case I run the 6k I have.
Electrical will be stock batt with 2 HC600s w/ 1/0 welding cable and 8 gauge speaker wire.
Hopefully box will be built this weekend and everything except subs will be installed. And when FedEx gets their act together, I will be able to tear the subs apart and rebuild.
Current 09 BMW 335xi: SQ build with Sundown and IA in progress
Retired '99 Jimmy: Highest TL 155.1 w/ 2 self made 12s and AQ3500.1