Featuring a solid medium-density fiberboard (MDF) construction, the BP1204 subwoofer is designed to be both flexible and anti-resonant. Included is a molded Plexiglas window so users can view the woofers and lighting, a heavy-duty carpeting finish for enhanced durability, and polypropylene cones with stamped steel baskets and foam surrounds for improved stability and control. Overall, the BP1204 subwoofer has received very positive reviews regarding easy setup, durable build, and quality audio output.