Loaded Sub Enclosure Features: Final Impedance: 2 Ohm. Peak Power Handling: 1600 Watts. CEA-2031 Compliant RMS Power Handling: 400 Watts. ¾” MDF enclosure. Bonded stapled and braced. Computer designed vents. Angled at 15 % for perfect bass alignment. High quality aviation grade tweed carpet. Satin Nickel speaker wire push terminals. Enclosure air space is 0.80 Cu Ft per sub. Vent dimensions: 2.5" x 6.75" x 9.75". Tuning frequency of enclosure: 37 Hz. 1.5" 4-Layer Black Aluminum Voice Coils Wound with OFC (100% Copper) Wire. The wire we use to wind the voice coil is imported from Japan which is way better quality than the standard China wire. Amplifier Features: Rockville dB11 1400w/700w RMS 2-Ohm Class-D Mono Car Amplifier and Bass Remote. CEA Compliant Power Ratings (Rated at less than 1% distortion) (Use these CEA ratings when matching and comparing with other CEA compliant brands such as Kicker, Rockford Fosgate, etc.).