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



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Dialed In Performance

The easiest way to upgrade your car audio experience is to add a subwoofer. With little or no hassle, GXR Series Subwoofers pop into the most conveniently-sized enclosures and sound great even with low power systems (so there's no pressure to upgrade your electronics to get great impact from a car subwoofer).

  • Cool sport utility styling.
  • Optimized for high efficiency in sealed and vented enclosures.
  • Super strong & durable Poly/Mica cones.
  • Vented pole piece cools the voice coil for high power handling and reliability.
  • Awesome performance for less than $100!

Big, bold styling and durable, quality-built construction looks cool and stands up to the elements for serious bass performance without seriously breaking your budget. It's the best way to get into car audio: affordable performance that's good enough to please the pros!

Driver Complement

Diameter12" (30.48cm) 


Total Frequency Response25-400Hz 
Nominal Impedance4 ohms
Efficiency90 dB
Power Handling
Continuous165 watts
Peak365 watts
Voice Coil
Driver Diameter1 1/2" (3.81cm) 

Thiele / Small Parameters

Resonant Frequency25.91 Hz
Xmax Linear0.24 
LE1.32 mH


Cut-Out Diameter11" (27.94cm) 
Full-Range Mounting Depth
Top Mount5 1/4" (13.34cm) 
Bottom Mount5 5/8" (14.29cm) 


Unit of Measureeach 


Speaker Warranty1 year 

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.

GXR12 Media

GXR12 Literature

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GXR12 Accessories