Car Subwoofers

This product is a vintage Polk model and is not available for sale, but it may still be available in some stores as a closeout or used product. The following text is taken from the original sales brochure for this product and does not reflect current availability. If you happen to have any question or concerns about this product, or any other Polk Audio product, feel free to contact our Customer Service Department at 1-800-377-7655 Monday - Friday, 9am - 5:30pm EST


10 inch, 4 Ohm subwoofer optimized for small sealed enclosures

Available Finishes:

More Control, More Power,
More Everything

When a 12 inch woofer just won't fit, here's your chance: a medium-size dX Sub for big bass in smaller spaces! Optimized for small sealed enclosures (.66 cubic foot), the dX10 delivers deep, tight, musical bass and a whole array of impressive features:

  • Polymer and graphite composite cones -- the stiffest cones in the autosound industry! Able to withstand the enormous pressures generated inside small enclosures without breakup and distortion.
  • High mass cones allow awesome low frequency tuning in small enclosures.
  • Thick ABS dustcaps prevent the distortion that can be caused by the build up of air pressure behind the cap.
  • High durometer rubber surrounds provide a much tighter and more durable air seal behind the cone than foam, paper, or cloth surrounds; for deep, tight, quick bass. Also, rubber surrounds don't dry rot like the foam surrounds used by other manufacturers.
  • Extra long, precision wrapped and vented coils for superior cooling and high power handling.
  • Four layer, 2" voice coil handles the heat generated when your amp is really cranking.
  • Vented pole piece lets air circulate over the voice coil to keep it cool and in control even when the bass is really thumping.
  • 8 Ohm and 4 Ohm versions available: Choose the impedance that suits your personal system design, including exotic isobaric and push-pull types.

If you're serious about your car stereo -- don't bother with cheap-o speakers. Go for the gusto of the dX Series Loudspeakers. They give you the ultimate in performance, flexibility, and control. They contain some amazing technology -- the kind that makes them tough enough to take the heat, and powerful and efficient enough to inspire many a road trip.

Driver Complement

Diameter10" (25.40cm) 
TypePolymer composite subwoofer 


Total Frequency Response20 - 300Hz 
Nominal Impedance4 ohms
Efficiency85 dB
Power Handling
Continuous300 watts
Peak600 watts
Voice Coil
Driver Diameter2" (5.08cm) 
Magnet Weight40.00 pounds

Thiele / Small Parameters

Resonant Frequency28.7 Hz
Xmax Linear.343in / 8.7mm 
Xmax Mechanical1.0in / 25.4mm 
Winding Width1.0 / 25.4 mm 
Recommended Enclosure.66 cubic feet sealed 
LE1.5 mH
SD.355sq. ft. / .0330sq m 
VAS1.18 cu ft / 33.4L 
Driver Weight8lbs 3oz / 3.7kg pounds


Cut-Out Diameter9 3/10" (23.62cm) 
Driver Mounting Depth
Top Mount4 1/2" (11.43cm) 
Bottom Mount4 3/4" (12.06cm) 
Product Weight (each)8.30 pounds


Unit of Measureeach 


Speaker WarrantyLimited, 1 year parts and labor 

Specifications, dimensions and features subject to change without notice. For more information call us at 1-800-377-7655 (USA and Canada). Outside of North America call +1 (410) 358-3600.

dX10-4 Media

dX10-4 Literature

Want to know more? Want to dig just a little deeper to learn about this product? Here's a list of source material that will give more detail, other perspectives, and answer questions you may have.

dX10-4 Accessories