Polk Audio's Mobile Monitor Series subwoofers bring out superior performance from lighter materials, so you'll get the impact you want without the extra weight of a conventional system. Advanced engineering and optimized components reproduce your sound with uncompromising accuracy, for low end that is rich and clear.

The MM1240 12" 4-ohm subwoofer handles up to 425 watts RMS. A copper voice coil and neodymium magnet motor drives the polymer cone with exceptional efficiency. The carbon composite basket features a "wagon wheel" design that resists flexing during heavy excursion, so your sub hits solidly without distorting.

This sub is certified for marine use, and Polk includes corrosion-resistant stainless steel mounting hardware.

Features

• 12" 4-ohm subwoofer
• polymer cone with butyl rubber surround
• carbon composite basket
• certified for marine use
• optional matching grille complements the basket design
• power range: 100-425 watts RMS
• peak power handling: 800 watts
• frequency response: 22-200 Hz
• sensitivity: 92 dB
• top-mount depth: 4-11/16"
• sealed box volume: 0.88 cubic feet
• ported box volume: 1.58 cubic feet