Product Features
* A marine single voice coil subwoofer speaker
* Equipped with 10-inch black Dynamic Balance polymer composite cone
* Frequency response: 28-200 Hz
* Power handling: 270 watts continuous, 540 watts peak
* Marine certified - Polk db Series speakers are built tough to withstand the toughest environments
Technical Details
* Woofer: 10-inch black Dynamic Balance polymer composite cone
* Voice coil: 2-inch 4-layer Kapton driver
* Frequency response: 28-200 Hz
* Nominal impedance: 4 ohms
* Power handling: 270 watts continuous, 540 watts peak
* Efficiency: 86 dB
* Marine certified: Yes
* Santoprene surrounds: Yes
* Top mounting depth: 5.5-inches
* Bottom mounting depth: 6.25-inches
* Speaker warranty: 3 years parts and labor (original purchaser)
* Weight: 9 lbs
Ships free.
Amazon.com: Polk Audio db1040 10-Inch Single Voice Coil Subwoofer (Single, Black): Electronics
Polk Audio db1040 10-Inch Single Voice Coil Subwoofer @ amazon $44 free ship 
