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Polk Audio MM522, MM 5.25" 2-Way Coaxial Car / Marine / UTV / ATV Speakers
Advanced High- Performance Sound
Every element of the MM1 Series is meticulously engineered for high-performance sound—Dynamic Balance technology, a pivoting 1” Terylene tweeter, UV tolerant titanium plated composite cones, lightweight neodymium motor structure—plus, glass fiber formers, oversized voice coils and high-temp Conex spiders for increased power handling.
Dynamic Balance Technology
Enjoy a rich, clean, full-range sound with our patented Dynamic Balance technology engineered into every MM1 speaker. Rigorously tested and developed by our talented Polk Audio engineers, whose passion rests in the principles of great sound, Dynamic Balance technology features non-resonant materials so you get extremely clear highs, mids and lows no matter what you’re listening to.
Neodymium Motor Structure
Compact lightweight neodymium motor structure provides more output with less power and overall higher efficiency—plus easier drop-in installation.
Glass Fiber Formers, Oversized Voice Coils and High Temperature Conex Spiders
All three combine to create a high efficiency driver, for elevated sound, increased power handling, better linearity, lower distortion and greater durability.
Non-corrosive Fiberglass Reinforced Baskets
Offers heavy-duty protection for back half of the speaker, which helps prevent corrosion and general wear and tear.
Integrated Epoxy Coated Crossovers
With its second order high/low pass system, you’re ensured the right frequencies reach the right speakers in your setup for optimal system blending regardless of the vehicle you’re in or the elements you encounter.
Speaker Size |
5.25" |
Design |
2-Way |
Marine Certification | Ultra Marine |
Tweeter Design |
1" Dome |
Impedance (Ohms) |
4 |
Tweeter Composition |
Terylene Fabric |
Woofer Composition |
Titanium Coated Composite |
Woofer Surround |
Santoprene Rubber |
Sensitivity (dB) |
92dB |
Frequency Response (Hz) |
50-40k Hz |
RMS Power Rating (Watts) |
80 |
Peak Power Rating (Watts) |
240 |
Top-mount Depth (Inches) |
2 7/16 |
Bottom-mount Depth (inches) |
2 5/8 |
Cutout Diameter (inches) |
4 5/8 |
Grilles Included |
Yes |
Warranty |
1-Year |
Speaker Size |
5.25" |
Design |
2-Way |
Marine Certification | Ultra Marine |
Tweeter Design |
1" Dome |
Impedance (Ohms) |
4 |
Tweeter Composition |
Terylene Fabric |
Woofer Composition |
Titanium Coated Composite |
Woofer Surround |
Santoprene Rubber |
Sensitivity (dB) |
92dB |
Frequency Response (Hz) |
50-40k Hz |
RMS Power Rating (Watts) |
80 |
Peak Power Rating (Watts) |
240 |
Top-mount Depth (Inches) |
2 7/16 |
Bottom-mount Depth (inches) |
2 5/8 |
Cutout Diameter (inches) |
4 5/8 |
Grilles Included |
Yes |
Warranty |
1-Year |
WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to