Rockville RVSPL15.1 15" 1500 Watt Car Subwoofer+Enclosure+Mono Amp+Wires Package Rockville RVSPL15.1A 15" Bass Enclosure System with matching Mono Block Amplifier. 1500 Watts Peak Power / 500 Watts RMS CEA-2031 Rating. Bonded, Stapled and Braced 3/8" MDF Cabinet. Tuned Vertical Slot Port System. +3dB increased Bass SPL in vehicle. Rockville Logo Mark on Carpet. Mono, gold-plated push style, speaker terminal. Dual, High-Power, High-Efficiency 12" Subwoofers. Kevlar Reinforced Ultra Stiff Pulp Cones. High Excursion Stitched Double Laminated Foam Surrounds. 3-D Molded Dust Cap. Linear Progressive Spider System. 4 Layer, High Power, Aluminum Voice Coil. Bumped and Vented Magnet Motor Structure. Frequency Response: 25Hz - 500Hz. SPL: 109dB @ 1w/1m. 90oz Magnet Motor Structure Weight per woofer. 1800 Watts Peak Power. Power Output: 600 Watts RMS CEA-2006 Power @ 4-ohm and 97dBA (Reference: 1Watt into 4 ohms). Frequency Response: 15Hz - 20KHz (-3dB). RMS Power: 800 Watts @ 2 ohms. 4 Ohm Mono-Block Class A/B. Input Gain Control: 150mV - 8 Volt. Power & Diagnostic LED Indicators. Computerized IC Control, Thermal, Speaker Short, Overload and DC Protection Circuitry. Mute & Delay Turn On Circuitry. Auto Thermal Control Circuitry