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


12 Inch, 4 Ohm Car Subwoofer

Available Finishes:
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Push It To The Limit

Bass in your face, from GNX Series Subwoofers.

This version is the 12" diameter, 4-Ohm model.

Like all the GNX Subs, it's totally optimized to work great in virtually any type of enclosure from Sealed to Vented to Band-Pass (if you can build it, GNX will rock it!)... Without emptying your wallet.

  • GNX Subs are available in two sizes, 10 inch and 12 inch, and three flavors of impedance, including Dual Voice Coil models (which can be paralleled for 4-Ohm or 2-Ohm loads).
  • Optimized for high performance in virtually any enclosure type: sealed, vented and bandpass.
  • Super strong and durable Poly-Mica Cones for gut-pounding bass.
  • Huge, injection molded ABS dust cap further stiffens the cone to supress unwanted resonance. You get incredible low distortion, high impact bass response.
  • Extra beefy (beefy!) magnet structure and motor assembly for high output bass with tight control.
  • Four-layer vented voice coil runs cool while your music stays hot.
  • Vented pole piece for higher efficiency and ultra high power handling.
  • Gold-plated three-way wire terminals for secure wire termination (fast-on, solder or screw terminal choices)
  • Durable rubber surround for extended life performance.

Driver Complement

Diameter12" (30.48cm) 


Minimum Impedance3.56 
Total Frequency Response18 - 400Hz 
Nominal Impedance4 ohms
Efficiency93 dB
Power Handling
Continuous175 watts
Peak400 watts
Voice Coil
Driver Diameter2" (5.08cm) 

Thiele / Small Parameters

Resonant Frequency25.99 Hz
Xmax Linear0.24 in. (6.1mm) 
LE1.54 mH
SD76.09 sq. in. (490.87 sq. cm) 
VAS4.11 cu. ft. (116.25L) 


Cut-Out Diameter9 15/16" (25.24cm) 
Full-Range Mounting Depth
Top Mount5 13/16" (14.76cm) 
Bottom Mount6 1/4" (15.88cm) 

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.

GNX124 Media

GNX124 Literature

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GNX124 Accessories