Polk Car Audio - db1240

12" Single Voice Coil 4 Ohm Subwoofer


Incredible Sound, Affordable Price


All the Polk features, all the Polk technology that makes our subs create big, tight, musical bass are here. The db1240 is ready for you when you're ready to get serious about your music.


240 Features:
  • Polypropylene cone with rigid ABS dustcap to stiffen 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.
  • 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.
  • Double 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.
  • Dual voice coil version also available - db1240DVC
  • Optional db12G grille is available.

  • Specifications:

    Dimensions:
  • Cut-Out Diameter: 11 1/16" (28.10cm)
  • Driver Mounting Depth - Bottom Mount: 6 9/16" (16.67cm)
  • Driver Mounting Depth - Top Mount: 6 1/16" (15.40cm)
  • Grille - Height: 2 1/8" (5.40cm)
  • Driver Complement Subwoofer - Diameter: 12" (30.48cm)
  • Driver Complement Subwoofer - Quantity: 1
  • Driver Complement Subwoofer - Type: Dynamic Balance woofer with polymer composite cone
  • Electrical
  • Efficiency: 88 dB
  • Nominal Impedance: 4 ohms
  • Total Frequency Response: 27-200 Hz
  • Power Handling - Continuous: 360 watts
  • Power Handling - Peak: 720 watts
  • Voice Coil - Driver Diameter: 2" (5.08cm)
  • Thiele / Small Parameters:
  • BL: 14.5
  • CMS: 215.5
  • MMS: 146.7
  • QES: 0.4
  • QMS: 11.7
  • QTS: 0.4
  • Recommended Enclosure: Sealed/Ported/Bandpass
  • Resonant Frequency: 28.3 Hz
  • SD: 80.6 sq in/520 sq cm
  • VAS: 2.87 cubic ft/81.4 L
  • Xmax - Xmax Linear: .62 inch/16 mm (peak to peak)
  • Available in:
    Size: Sold as Singles

    MSRP: $170.00 CAD

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