DESC: The Power Stage 2 subwoofer utilizes dual voice coils for total wiring flexibility, and are optimized for mid-sized ported enclosures. The anodized aluminum dust cap bonded to a polypropylene cone is stronger and lighter than ever. Combine this with the parabolic triangular geometry cone support system, and you have a piston assembly that is lightweight but extremely rigid. Dual mirror image symmetrical spiders with integrated support ring ensures massive excursion and improves mechanical stability.