Car Subwoofers


12-inch single voice coil mobile audio/marine subwoofer

12" woofer
30.48cm woofer



Available Finishes:
Additional Images

Your ride. Our Sound.

Big serious bass made real with a list of features as only Polk can deliver. It’s all here. State-of-the-art everything. For state-of-the-art performance.

DXi124 Features:

Klippel motor optimization uses laser measurement technology to ensure a smooth excursion path at either end of the volume spectrum for uniform performance at both low and high volumes.

Polk's proprietary, patented Dynamic Balance® technology allows our engineers to design out distortion-causing driver and system resonances, so you only hear the good sounds.

Polymer woofer cones and butyl rubber surrounds will not break down over time and will survive the rigors of harsh automotive environments.

High temperature copper voice coil (50mm) and polyamide former stands up to the most rigorous use while maintaining extremely low distortion for bass punch and output.

Nickel plated heavy duty input terminals accommodate speaker wire up to 8 AWG or twisted pairs of 12 AWG.

Carbon composite basket based on the spokes of a wheel is lightweight, will not flex during peaks and looks great! Don’t be afraid to show off the back of your woofer.

Dual voice coil configuration (DXi124DVC) also available.

All Polk products are made using the best materials and the most advanced manufacturing techniques. They pass the industry’s most exhaustive quality tests, including drop testing, extreme signal response and UV & salt exposure testing. Polk loudspeakers are built to perform for a lifetime.

Driver Complement

Diameter12" (30.48cm) 
TypeDynamic Balance polymer composite woofer 


Total Frequency Response27-200Hz 
Nominal Impedance4 ohms
Efficiency88 dB
Power Handling
Continuous360 watts
Peak720 watts

Thiele / Small Parameters

Resonant Frequency30 Hz
Xmax Linear0.622 
Recommended Enclosuresealed/ported/bandpass 
SD80.6 square inches 
VAS2.54 cubic feet 


Cut-Out Diameter11 1/16" (28.10cm) 
Full-Range Mounting Depth
Top Mount6 1/16" (15.40cm) 
Bottom Mount6 9/16" (16.67cm) 


Unit of Measureeach 


Speaker Warranty1 year parts and labor (original purchaser) 

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.

DXi124 Media

DXi124 Accessories