This bundle includes 2x Alpine R2-W12D4 12" R-Series "R2" Subwoofers and 1x Alpine S2-A120M S-Series Class-D Mono Subwoofer Amplifier. The R2-W12D4 subwoofers feature a new motor structure for powerful and accurate bass, with a frequency response of 24Hz - 200Hz. Each subwoofer has a power range of 300W - 750W RMS and measures 11.61” x 11.61” x 6.43”. The S2-A120M Mono Amplifier delivers 1200W at 1ohm or 2ohm drive, featuring Alpine’s Class D Amplifier Circuit. It has dimensions of 13.1” W x 2.25” H x 8.25” D and a power output of 1200W. With simplified installation and adjustable crossovers, this amplifier offers unparalleled power and performance. Get ready to experience exceptional sound quality and bass performance with this premium bundle from Alpine. Ideal for upgrading your car audio system, these products deliver clean, distortion-free sound with powerful bass. The R2-W12D4 subwoofers with their innovative motor structure and the S2-A120M Mono Amplifier offering 1200W of output ensure an immersive audio experience. The subwoofers' oversized dust cap and Alpine’s HAMR Surround Technology provide enhanced bass response accuracy. The amplifier's Class D circuitry, two-sided terminal layout, and adjustable crossovers make it easy to customize your sound. This bundle is a must-have for audiophiles seeking top-notch sound performance in their vehicle. Elevate your music listening experience with Alpine's cutting-edge technology and reliable durability.