The db1040DVC subwoofer employs a 10 inch driver and has dual voice coils for more wiring options and greater power handling. The subwoofer has been optimized for high performance in virtually any enclosure type: sealed, vented and band pass. db1040DVC Features: 10 inch dual coil subwoofers optimized for high performance in virtually any enclosure type: sealed, vented and band pass. Wrap around rubber gasket seals the sub in your enclosure for airtight performance. State of the art laser based Klippel measurement technology perfectly centers the subwooferrsquo;s voice coil in the magnetic field, improving X max and BL linearity, and the sub's micro and macro dynamics, for deep, precise, bass! Black matte finish composite cones are unbelievably stiff for real gut pounding bass. Injection molded ABS dust cap also stiffens the cone to suppress unwanted resonance for incredible low distortion, high impact bass response. Big beefy magnet structure and motor assembly for high output bass with tight control. Durable butyl rubber surround for consistent, reliable performance. Four layer vented voice coil runs cool while your music stays hot. Vented pole piece for higher efficiency and ultra high power handling. Fast on wire terminals for quick, secure hookups. Marine Certified Polk db Series speakers are built tough to withstand the toughest environments so they are perfect for use in boats of all types. That's why Correct Craft offers Polk speakers in their award winning Nautiques ski and wakeboarding boats. Fire retardant flat NOMEX® spider allows extended linear motion while providing highly reliable mechanical and thermal stability. Single voice coil version also available db1040 1 Buy = 1 Subwoofer **We are an authorized Polk Dealer**

2) NEW **Polk Audio DB1040DVC** 10" 540 Watt Car Subwoofers 540 Watt MAX 270 Watt RMS Type: Dynamic Balance Woofer with Polymer Composite Cone Dual 4 Ohm Voice Coils Efficiency: 86 dB Nominal Impedance: Dual 4 ohms Total Frequency Response: 28 200 Hz Driver Diameter: 2" (5.08cm) Cut Out Diameter: 9 1/16" (23.02cm) Bottom Mount: 5 15/16" (15.08cm Top Mount: 5 7/16" (13.81cm) Diameter: 10" (25.40cm) Recommended Enclosure: Sealed/Ported/Bandpass Resonant Frequency: 35 Hz SD: 54.25 sq in/350 sq cm VAS: 1.17 cubic feet/31.6 L Xmax Linear: .728 inch/16 mm (peak to peak) Product Condition: Brand New Item Weight: 12 lbs. Part Number: **DB1040** Warranty – 1 Year Manufacturer Warranty