POLK AUDIO MM840 Mobile Monitor Series 8" Subwoofer

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.

• 8" 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: 100-250 watts RMS
• peak power handling: 500 watts
• frequency response: 26-200 Hz
• sensitivity: 89 dB
• top-mount depth: 3-15/16"
• sealed box volume: 0.35 cubic feet

The MM840 8" 4-ohm subwoofer handles up to 250 watts RMS. A copper voice coil and neodymium magnet motor drive 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.