Features:

Alpine W12S4 12" 750 Watt Peak 250 Watt RMS 4-Ohm Car Audio Subwoofer
12" 4-ohm subwoofer
Polypropylene and mica cone with poly-foam surround
Stamped steel frame
Power handling: 50-250 watts RMS
Peak power: 750 watts
Sensitivity: 87.9 dB
Frequency response: 22-200 Hz
Top-mount depth: 5-5/16"
Sealed box volume: 1.09 cu. ft.
Ported box volume: 1.91 cu. ft.
Rockville RS12 Single 12" Sealed Subwoofer Enclosure
Proudly Made In The USA, Using Only The Finest Quality Materials - For The Best Level of Performance From Your Subs!
3/4" USA Heavy Duty MDF Construction
Machine precision cut mounting holes
Top of the line Glue for extra durable adhesion
High quality GOLD spring loaded terminals
Designed, tested, and engineered to work with most of today's popular woofers. These enclosures are built with the quality additives needed to maximize the performance of any sound system.

• Alpine W12S4 12" 750 Watt Peak 250 Watt RMS 4-Ohm Car Audio Subwoofer. 12" 4-ohm subwoofer. Polypropylene and mica cone with poly-foam surround. Stamped steel frame. Power handling: 50-250 watts RMS.
• Peak power: 750 watts. Sensitivity: 87.9 dB. Frequency response: 22-200 Hz. Top-mount depth: 5-5/16". Sealed box volume: 1.09 cu. ft.. Ported box volume: 1.91 cu. ft..  
• Rockville RS12 Single 12" Sealed Subwoofer Enclosure. Proudly Made In The USA, Using Only The Finest Quality Materials - For The Best Level of Performance From Your Subs!. 3/4" USA Heavy Duty MDF Construction.
• Machine precision cut mounting holes . Top of the line Glue for extra durable adhesion. High quality GOLD spring loaded terminals. Designed, tested, and engineered to work with most of today's popular woofers. These enclosures are built with the quality additives needed to maximize the performance of any sound system.. .  
• The RS12 single sealed speaker box is made in the USA with Grade "A" ¾" MDF wood. This enclosure is made with precision cutting machinery by industry experts that have been making these enclosures in the USA for over 20 years. All Rockville enclosures come with a customized enhanced glue that is unmatched by any other manufacturer. That means that the carpet will stay in place and not rip or tear

Alpine W12S4 12" 750 Watt Peak 250 Watt RMS 4-Ohm Car Audio Subwoofer. 12" 4-ohm subwoofer. Polypropylene and mica cone with poly-foam surround. Stamped steel frame. Power handling: 50-250 watts RMS.Alpine