$319.00 12" 1800W 4-Ohm Type-R Shallow-Mount Car Audio Subwoofer General FeaturesPower Handling: 300-600W RMS 1800W Peak Power Features: Impedance: 4 Ohms Aluminum woofer cone Injection Molded Santoprene rubber surround High-Amplitude Multi-Roll (HAMR) suspension results in the highest X-max and SPL output in its category Thin design allows for installation in compact areas FEA-Optimization allows for maximum linearity, greatly reduces distortion, and improves power handling and output Vented voice coil heat sink, and airflow management system keeps subwoofer cool, while reducing distortion 4" diameter single layer edge-wound ribbon wire voice coil Unique spider and pass-through gap design, provide over 50mm of peak-to-peak excursion Neodymium 35SH magnet structure Frequency response: 26-200 Hz Sensitivity: 84dB More...