Alpine RS-W12D4 12-Inch R-Series Shallow Subwoofer with Dual 4-Ohm Voice Coils Elevate your car audio with the Alpine RS-W12D4, a 12-inch R-Series shallow subwoofer designed for powerful bass in space-constrained installations. Featuring dual 4-ohm voice coils and 600 watts RMS power handling, this subwoofer delivers hard-hitting, smooth bass with a compact design. Built on Alpine’s renowned Type-R platform, it incorporates advanced technologies like a dual-gap motor structure and HAMR surround for deep, accurate sound in a shallow profile. Key Features of the Alpine RS-W12D4 Ultra-Shallow Design: Compact mounting depth enables installation in tight spaces without sacrificing bass performance. High Amplitude Multi-Roll (HAMR) Surround: Allows 20mm of cone excursion for efficient air movement and precise bass. Gen2 DD-Linear Magnetic Circuit: Dual-gap voice coil structure ensures low distortion and enhanced motor control. Aluminum Dust Cap: Lightweight yet rigid for fast sound transition and minimal distortion. Oversized 4-Inch Voice Coil: Controlled by a neodymium magnet for 600W RMS power handling. Die-Cast Aluminum Frame: Provides rigid construction for high energy transfer and reduced resonance. EZ-Change Twist-Lock Grille System: Compatible with optional KTE-RS12G grille (sold separately) for added protection. Dual 4-Ohm Voice Coils: Offers wiring flexibility for 2-ohm or 8-ohm configurations. Why Choose the Alpine RS-W12D4? The Alpine RS-W12D4 combines compact size with high-performance bass, making it ideal for car audio enthusiasts seeking powerful low-end output in limited spaces. Its innovative design matches the 20mm excursion of full-size R2-Series subwoofers, delivering clean, deep bass comparable to larger models. Specifications Table Specification Details Subwoofer Size 12 inches Impedance Dual 4-Ohm Power Handling (RMS) 600 Watts Power Handling (Peak) 1800 Watts Mounting Depth 3.25 inches (82.6 mm) Cutout Diameter 10.94 inches (278 mm) Sealed Box Volume 0.4-1.0 cu. ft. (11.3-28.3 Liters) Vented Box Volume 1.0-1.5 cu. ft. (28.3-42.5 Liters) Sensitivity (1W/1m) 81 dB Frequency Response 25 Hz - 100 Hz Voice Coil Diameter 4 inches (101.6 mm) Magnet Type Neodymium Cone Material Not specified (assumed Kevlar-treated based on R-Series) Dust Cap Material Aluminum Surround Material High Amplitude Multi-Roll (HAMR) Rubber Basket Design Die-Cast Aluminum Linear Excursion (Xmax) 20 mm Mechanical Travel (Xmech) Not specified (assumed ~60 mm based on series) Compliance Not specified (assumed CTA-2031) Grille Compatibility KTE-RS12G (sold separately) Warranty 1 Year (via authorized dealers)
