SKU 1104
8-inch dual voice coil mobile audio subwoofer

Incredible Sound, Affordable Price

The compact db840DVC comes with all the Polk goodies that make this a great entry level mobile audio subwoofer for installs on land or sea. And because its a dual voice coil configuration, you have lots of wiring options for matching your amplifier's capabilities.

db840DVC Features:

  • "Dished" polypropylene cone supported by a vented cone/coil coupler stiffens the cone for greater mechanical stability and lower distortion.

  • 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.

  • Santoprene surround is impervious to extremes in temperature, humidity and exposure to sunlight for excellent long term reliability.

  • Fire-retardant flat NOMEX® spider allows extended linear motion while providing highly reliable mechanical and thermal stability.

  • Triple venting of the 4-layer Kapton voice coil former, cone/coil coupler and pole piece contribute to the high power handling and reliability of the db Series subs.

  • As with all Polk subwoofers, the voice coil alignment, motor and suspension were optimized using a state-of-the-art Klippel laser analyzer. The result is superior cone travel linearity for flatter response and lower distortion.

  • Single voice coil version also available - db840

  • Optional db8G grille is available.

Dimensions - Cut-Out Diameter 7 1/16 (17.94cm) "
Dimensions Driver Mounting Depth - Bottom Mount 4 9/16 (11.59cm) "
Dimensions Driver Mounting Depth - Top Mount 4 (10.16cm) "
Driver Complement Subwoofer - Diameter 8 (20.32cm) "
Driver Complement Subwoofer - Quantity 1
Driver Complement Subwoofer - Type Dynamic Balance woofer with polymer composite cone
Electrical - Efficiency 85 dB
Electrical - Nominal Impedance Dual 4 ohms
Electrical - Total Frequency Response 30-200 Hz
Electrical Power Handling - Continuous 180 watts
Electrical Power Handling - Peak 360 watts
Electrical Voice Coil - Driver Diameter 1 1/2 (3.81cm) "
Shipping - Unit of Measure each
Thiele / Small Parameters - BL 6.9 Tesla Meters
Thiele / Small Parameters - CMS 149.5 Micro Meters
Thiele / Small Parameters - MMS 65g
Thiele / Small Parameters - QES 0.62
Thiele / Small Parameters - QMS 14.1
Thiele / Small Parameters - QTS 0.59
Thiele / Small Parameters - Recommended Enclosure Sealed/Ported/Bandpass
Thiele / Small Parameters - Resonant Frequency 43 Hz
Thiele / Small Parameters - SD 35.65 sq in/230 sq cm
Thiele / Small Parameters - VAS .55 cubic feet/11.3 L
Thiele / Small Parameters Xmax - Xmax Linear .24 inch/6.1 mm (peak to peak)
Warranty - Speaker Warranty 1 year parts and labor (original purchaser)