This product is a vintage Polk model and is not available for sale, but it may still be available in some stores as a closeout or used product. The following text is taken from the original sales brochure for this product and does not reflect current availability. If you happen to have any question or concerns about this product, or any other Polk Audio product, feel free to contact our Customer Service Department at 1-800-377-7655 Monday - Friday, 9am - 5:30pm EST


5-1/4 inch component mobile audio loudspeaker system

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Championship Performance

When you consider your car an extension of your personality, Polk Audio/MOMO High Performance Car Audio is the perfect synthesis of technology and design.

Now you can get the championship performance of Polk/MOMO components in the convenient 5-1/4" size--perfect for kick panels, compact car doors and other tight spaces.

MMC5250 Technology & Features

  • Marine Certified Polk/MOMO 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/MOMO speakers in their award-winning Nautiques ski and wakeboarding boats. Professional wakeboarder Brian Francis choose Polk/MOMO speakers woofers and amps for his MasterCraft boat and Chevy Avalanche truck for maximum entertainment and excitement on the road and wave.
  • Woven Dynamic Balance Carbon Fiber Cone provides the ideal balance of stiffness and low mass for the clearest, most detailed midrange performance, and lowest distortion, of any speaker in its class.
  • 25mm Liquid-Cooled Silk/Polymer Composite Dome Tweeter with Neodymium magnet for clear, detailed highs.
  • 15º Swivel Tweeter Housings delivers direct, detailed imaging.
  • Surface and flush mount tweeter housings supplied
  • Channel vented, acoustically inert rustproof Cast Aluminum Basket for superior stiffness and better heat dissipation.
  • Outboard 2nd Order Crossover with Mylar Capacitor/Air-Core Inductor components for better dynamic impact and transparency. Vented Crossover Housing has multiple mounting options (screw or "zip" tie) for the ultimate system installation choices. Mating "fastons" for hassle free connections.
  • Muscular ABS Grilles based on exclusive MOMO rim designs.
  • Airtight Rubber Surround stands up to moisture, sunlight and extreme temperatures while allowing long excursion linear motion and years of reliable use.
  • Strong, fire-retardant flat NOMEX® Spider allows extended linear motion while providing highly reliable mechanical and thermal stability.
  • Laser-based, Klippel-optimized, channel vented 2-Layer 25mm Kapton Voice Coil and Former for high heat dissipation (Kapton's melting temperature is 725°F/400°C!) and extreme power handling.
  • Waterproof, anti-resonance PVC Magnet Boot, removable for more install flexibility.
  • Dual Nickel Plated Polarized Terminals for component-like connections. Truly "bi-ampable"!
  • Built tough and backed by a three-year parts & labor warranty, one of the best warranties in the car audio world.

Driver Complement

Diameter1" (2.54cm) 
TypeSilk/Polymer composite dome 
Mid / Woofer
Diameter5 1/4" (13.34cm) 
TypeWoven Carbon Fiber 


Total Frequency Response53Hz - 25kHz 
Nominal Impedance4 ohms
Efficiency89 dB
Power Handling
Continuous100 watts
Peak200 watts
Voice Coil
Driver Diameter1" (2.54cm) 
Tweeter Diameter1" (2.54cm) 

Thiele / Small Parameters

Resonant Frequency107 Hz
SD85 sq. cm 
VAS2.43 L 


Height1 1/2" (3.81cm) 
Length5 5/8" (14.29cm) 
Width6" (15.24cm) 
Height7/16" (1.11cm) 
Diameter5 15/16" (15.08cm) 
Driver Mounting Depth
Top Mount without Cup2 5/16" (5.87cm) 
Bottom Mount without Cup2 1/2" (6.35cm) 
Top Mount2 5/8" (6.67cm) 
Bottom Mount2 3/4" (6.99cm) 


Speaker Warranty3 years 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.

MMC5250 Media

MMC5250 Literature

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MMC5250 Accessories