Alpine type R 10d2

10" Dual 2-Ohm Type-R Series Car Subwoofer Power Handling: Peak: 3000 watts RMS: 300 - 1000 watts RMS Notification: The objective rated wattage for the SWR-10D2 Subwoofer is 750W RMS. Alpine historically labeled this subwoofer as "up to" 1000W RMS so it would line up versus other brands that at times unscrupulously overrated their subwoofers. Recommend power: 400 - 750 watts RMS Impedance: Dual 2 ohms Kevlar treated pulp cone Durable HAMR Santoprene surround Progressive Conex spider Compound Radius Curve pole geometry Oversized 2.6", High-Temperature, 4-Layer Dual Voice Coil 10" Protective 2-Piece Subwoofer Grille Available, sold separately: Alpine KTE-10G Frequency response: 26-300 Hz Resonance Frequency (Fs): 31Hz Top-mount depth: 5-7/8" Sensitivity: 82dB