5-inch coaxial mobile audio loudspeaker

5" coaxial
12.70cm coaxial


$8995 per pair

Available Finishes:

Your Ride. Our Sound.

The DXi500 is your ticket to much better sound with features that create the legendary Polk sound in a highly reliable package. You can even keep the factory grilles and everything else, because the DXi500 is ready for a quick swap.

DXi500 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.

3/4-inch silk dome tweeter delivers clear, well-defined highs.

Durable butyl rubber surround won’t fall apart under the stress of extreme temperatures, sunlight or time, for years of great Polk sound.

Polymer/mica composite cones are stiff yet lightweight for big sound, small distortion.

Low-mass 2-layer Kapton voice coil’s high melting temperature (725°F/400°C) ensures high power handling and serious reliability.

Pole plate heat sink promotes better heat dissipation for superior power handling and reliability.

Marine Certified to withstand the harshest environments on the water.

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

Diameter3/4" (1.91cm) 
TypeDynamic Balance silk/polymer composite dome 
Mid / Woofer
Diameter5" (12.70cm) 
TypeDynamic Balance driver with polymer composite coaxial driver 


Total Frequency Response85Hz-22kHz 
Nominal Impedance4 ohms
Efficiency91 dB
Power Handling
Continuous45 watts
Peak135 watts


Cut-Out Diameter4" (10.16cm) 
Full-Range Mounting Depth
Top Mount1 13/16" (4.60cm) 
Bottom Mount1 15/16" (4.92cm) 


Unit of Measurepair 


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.

DXi500 Media

DXi500 Accessories