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 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.
Polk Audio MM840 8" Marine Single 4 ohm Mobile Monitor MM Series Subwoofer
Impedance: 4 Ohms
Polymer woofer cones
Butyl rubber surround
Heavy duty input terminals
Carbon composite basket is lightweight and durable
Klippel optimized components for the best possible performance
1-1/2" High temperature copper voice coil
Frequency response: 26-200 Hz
Sensitivity: 90 dB
top-mount depth: 4"
sealed box volume: 0.35 cubic feet
Marine certified to withstand a harsh marine environment
- Peak: 500 watts
- RMS: 250 watts