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



Available Finishes:

Dialed In Performance

Everyone knows that aftermarket car audio speakers always sound better than factory speakers. The GXR Series of great sounding, reasonably priced, easy-to-install car loudspeakers are your "instant" car audio upgrade kit.

  • Cool look, great sound.
  • High efficiency tweeter (with 1/2" voice coil), usually found on far more expensive speakers, for smooth, clean & detailed highs.
  • Exclusive Duralam Cone: Silicone treated lacquered Fiber material is strong, yet light -- and waterproof -- for crystal clear midrange and durable long life.
  • Airtight Butyl Rubber Surround is impervious to the elements.
  • Ultra high efficiency -- plays loud and clean even with just head-unit power.
  • High fit ratio and low profile design makes for easy installation in virtually any car on the road, your's included!

Get performance that impresses the pros, at a price that is perfect for car audio beginners, with the GXR Series. GXR Series speakers make upgrading easy -- the GXR Series is efficient enough to work well with stock electronics, engineered with a high fit ratio to drop right in, and priced to move.

Join us in our car audio obsession!

Driver Complement

Diameter1/2" (1.27cm) 
Typehigh efficiency tweeter 
Mid / Woofer
Oval Height7" (17.78cm) 
Oval Width5" (12.70cm) 
TypeDuralam composite cone 


Total Frequency Response57Hz-21kHz 
Nominal Impedance4 ohms
Efficiency92 dB
Power Handling
Continuous50 watts
Peak125 watts
Voice Coil
Tweeter Diameter1/2" (1.27cm) 


Oval Cut-Out Height7 1/8" (18.10cm) 
Oval Cut-Out Width5" (12.70cm) 
Full-Range Mounting Depth
Top Mount2 1/8" (5.40cm) 
Bottom Mount2 1/2" (6.35cm) 


Unit of Measurepair 


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.

GXR57 Media

GXR57 Literature

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GXR57 Accessories