Alpine R2-SB12V Next-Generation 12-inch R-Series Alpine Halo Preloaded Subwoofer Enclosure with ProLink™

Features: Groundbreaking Alpine Halo Design  ProLink™ ported enclosure design Polypropylene/Ceramic Composite Dust Cap  Kevlar Reinforced Pulp Cone High-Performance subwoofers   High-Amplitude Multi-Roll (H.A.M.R.) Surround  Large Double-Stacked Magnets CARB compliant 3/4-inch MDF construction Premium black carpet Silver Alpine embossed side logo badge Brushed aluminum finished metallic front baffle  Threaded Subwoofer Mounting Inserts (for reversible subwoofer orientation) Specifications: 750W RMS  2250W Peak Power Handling  Frequency Response: 24Hz-200Hz  Sensitivity (1W/1m): 85dB   Dual 4Ω Voice Coils Wired in Parallel for a 2Ω Load (Compatible with R-A75M)  Voice Coil: 65.5mm   X-Max: 20mm Magnet Weight: 144oz  12 Gauge OFC Speaker Box Wire  CTA-2031 Compliant