The HELIX COMPOSE Ci5 S200FM-D2 is a 200 mm hybrid speaker that combines mid-woofer and subwoofer roles to deliver controlled low-frequency reproduction with high excursion and strong output. It uses a lightweight polypropylene cone and a high-tech polymer composite basket reinforced with glass spheres, offers FlexMount200 adaptor compatibility and a shallow 47 mm installation depth for under-seat and bulkhead integration in select vehicles; available in D2 (2 x 2 Ohm) and S2 (1 x 2 Ohm) chassis configurations for flexible amplifier matching.