Alpine 12-Inch 600-Watt Alpine S-Series Halo Loaded Subwoofer Enclosure with ProLink Connectivity Drawing inspiration from the Alpine Halo displays, these subwoofer enclosures feature distinctive curved edges accented by a sleek silver trim and a front baffle, creating a seamlessly matching system aesthetic. Built with sturdy, 3/4” MDF construction and covered in a premium black carpet, these enclosures not only provide durability but give the impression of a custom look, without the custom work. Alpine’s innovative ProLink technology is tailor-made for bass enthusiasts. With ProLink, experience unparalleled flexibility as you effortlessly add an additional Alpine Halo subwoofer into your setup. Utilize a dedicated linking bracket (sold separately) for seamless integration, doubling the impact of your bass for a truly immersive sound sensation. Features Groundbreaking Alpine Halo Design. ProLink™ Ported Enclosure Design. Carbon Fiber / Poly Propylene Cone. Poly Propylene / Ceramic Dust Cap. High-Grade Strontium Ferrite Magnets. Twist-Lock Grille Mount System. High-Amplitude Multi-Roll (H.A.M.R.) Surround. CARB compliant 3/4-inch MDF construction. Premium Black Carpet. Silver Alpine Embossed Logo Badge. Brushed Aluminum Finished Metallic Front Baffle. Threaded Subwoofer Mounting Inserts (for reversible subwoofer orientation). Specifications Dimensions: 17” W x 14.625” H x 15” D. 600W RMS / 1800W Peak. Frequency Response: 23Hz - 215Hz. Sensitivity (1W/1M): 86.2dB. Voice Coil: 2.6". X-Max: 15mm. Magnet Weight: 64oz. Dual 4Ω Voice Coils Wired in Parallel for a 2Ω Load (Compatible with S2-A60M). 12 Gauge OFC Speaker Box Wire. Binding Post Terminal Cup.