Bundle Includes: One Alpine R2-SB10V Single Type R2 10-in Subwoofer in Vented Enclosure, one Alpine S-A60M Mono Digital Subwoofer Amplifier, and one Wiring Kit Brushed aluminum finished metallic front baffle Dual 4Ω Voice Coils Wired in Parallel for a 2Ω Load (Compatible with R2-A75M) 12 Gauge OFC Speaker Box Wire Threaded Subwoofer Mounting Inserts (for reversible subwoofer orientation) Alpine R2-SB10V Single Type R2 10-in Subwoofer in Vented Enclosure - The new R2-Series subwoofers now feature larger, double-stacked magnets that contribute more motor force for deeper bass and tighter bass control compared to the previous generation. ProLink is unique to Alpine and allows you to link two R2-SB10V enclosures together using an optional KTX-H10 Linking Kit (sold separately) to create a dual subwoofer-enclosure. Drawing inspiration from the sleek, tapered lines and clean silver finish of the Alpine Halo Display, the R2-SB10V shares the same unique, curved edges outlined by a silver trim and a metallic front baffle for a matching system aesthetic. Features - Groundbreaking Alpine Halo Design Vented Enclosure Tuning Frequency: 35Hz Sensitivity 85dB ProLink ported enclosure design Optimal Sound Performance 750W RMS Power Handling Alpine S-A60M Mono Digital Subwoofer Amplifier - 600 Watts x 1 @ 2-Ohms & 330 Watts x 1 @ 4-Ohms - The S-Series Amplifiers have a diagnostic LED located behind the blue Alpine Jewell on the top of the amplifier. A Blue light means the amplifier is operating normally. A red blinking light means the amplifier is currently too hot for operation and needs to cool down. A solid red light can mean three things; 1. Amplifier circuit is abnormal. 2. Temperature is too high. 3. Power supply voltage is too high. Specifications: Power output 4-Ohm @ 14.4 Volts: 330 W RMS X 1 Power output 2-Ohm @ 14.4 Volts: 600 W RMS X 1 THD 10 W into 4 Ohms: Less Than 0.03% THD 10 W into 2 Ohms: Less Than 0.05% THD Rated Power 4 Ohms: Less Than 0.02% THD Rated Power 2 Ohms: Less Than 1.0% Bundle also includes one Wiring Kit, one Creative Audio Coozy, and one 4-piece set of plastic pry tools.