Sealed oversize for 12"s 200-800W a piece, 15"s Would definitely ported considering how shotty a L7 sounds in a sealed. IMO skip bandpass, Port larger subs to flex hard, Seal smaller subs for tighter bass AND Longer sub life. Don't forget IMO....Only 9 years experience here.
B4 Cleared Corners/Fog Light Removal
Threaded Mode