Whether you’re into four-wheeling, two-wheeling, hot-rodding, or just a leisurely drive, you’ll find no better way to enjoy your music on the road, or off, than with our db, DXi or MM loudspeakers and component systems. These series continue to be the performance standard and all offer the kind of styling that can work in a big-block American classic or a high-tech import.

MM571 5x7” 2-Way Coaxial Speakers

5x7-inch coaxial mobile audio loudspeaker

For a quick and easy install, with very little sonic compromise, choose the MM571. It’s an ultra-high-performance 5x7-inch mid-woofer and 1-inch silk dome tweeter have a frequency response of 38Hz-25kHz and a sensitivity of 92db. The MM571 is suitable for either a vehicle or boat. Like all MM Series speakers, the MM571 will fit virtually any application.

RRP $249.00 AUD

Product Manual

Space age materials reduce weight of components while offering rock solid reliability, advanced looks and ultra high performance.

Neodymium magnets a rare earth metal offering exceptional strength to performance ratio, found only in the most exotic speakers, saves tremendous weight. Don’t let the sound system weigh your vehicle down. Since the magnet is smaller, the speaker can fit into more applications.

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 speaker.

Woven glass composite cones feature tremendous stiffness-to mass ratio. Lower mass means faster transients and finer detail.

Klippel optimized components using a state-of-the-art Klippel distortion analyzer, Polk engineers were able to optimize the woofer’s motor structure, voice coil alignment and suspension for the best possible performance, even at extreme listening levels.

Marine Certified Polk MM Series speakers are built tough to withstand the toughest environments so they are perfect for use in boats of all types. That’s why Correct Craft offers Polk speakers in their award-winning Nautiques ski and wakeboarding boats.

Large-diameter voice coils (30mm) in drivers increase reliability and power handling capacity.

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

Diameter 1" (2.54cm) 
Type Soft dome 
Mid / Woofer
Oval Height 5" (12.70cm) 
Oval Width 7" (17.78cm) 
Type Dynamic Balance driver with poly-composite cone 


Total Frequency Response 38-25kHz 
Nominal Impedance 2.7 ohms
Efficiency 92 dB
Power Handling
Continuous 90 watts
Peak 200 watts


Unit of Measure pair 


Oval Height 7 3/16" (18.26cm) 
Oval Width 4 5/8" (11.75cm) 
Full-Range Mounting Depth
Top Mount 2 5/8" (6.67cm) 
Bottom Mount 3" (7.62cm) 


Speaker Warranty 1 year parts and labor (original purchaser)