6 1/2-inch coaxial mobile loudspeaker

6 1/2" coaxial
16.51cm coaxial


$9995 per pair

Available Finishes:
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Your Ride, Our Sound. Even Sweeter.

Turn up your vehicle’s audio performance with the DXi651, a 6 1/2-inch coaxial speaker designed to drop into a variety of applications in no time at all. Advanced materials reduce component weight while offering rock solid reliability, advanced looks and ultra-high performance.

DXi651 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.

The DXi651 comes with 6 3/4-inch adaptor rings for easy fit in VWs, Audis, BMWs and other European cars.

Bi-laminate composite cones are stiff yet lightweight for big sound and little distortion..

Low-mass 2-layer Kapton voice coil has a high melting temperature, ensuring reliability and high power handling.

Aluminum dome tweeter delivers the higher listening levels and higher power handling.

Swivel mount tweeter allows precise aiming of sound.

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 aluminum dome 
Mid / Woofer
Diameter6 1/2" (16.51cm) 
TypeDynamic Balance polypropylene cone 


Total Frequency Response35Hz-22kHz 
Nominal Impedance4 ohms
Efficiency92 dB
Power Handling
Continuous60 watts
Peak180 watts


Cut-Out Diameter5" (12.70cm) 
Height1 1/16" (2.70cm) 
Driver Mounting Depth
Top Mount2" (5.08cm) 


Unit of Measurepair 
Total Shipping Weight5.32 pounds


Speaker Warrantyone 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.

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