Car

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

MMC690

6 x 9 inch three way loudspeaker with external crossover

Available Finishes:
Additional Images

Championship Performance

Polk/MOMO Championship Performance car audio speakers are engineered by Polk Audio with ultra high-tech materials for competition-level performance and durability. They're styled exclusively by MOMO, the world's preeminent designer of racing accessories, to look as good as they sound. And for motor sports enthusiasts the world over, a MOMO product is a charismatic symbol of the finest quality.

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 the Polk/MOMO Carbon Series brings legendary Polk/MOMO championship performance and style to convenient coaxial and three-way configurations.

MMC690 technologies and features:

  • 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.
  • 30mm Liquid-Cooled Silk/Polymer Composite Dome Tweeter and 19mm Super-Tweeter with Neodymium magnet for clear, detailed highs.
  • 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.
  • Channel vented, acoustically inert rustproof Cast Aluminum Basket for superior stiffness and better heat dissipation.
  • By-passable, vented Outboard 2nd Order x2 (High and Low) Crossover with big, beefy 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 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 35.5mm 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

Tweeter
Quantity
Diameter1" (2.54cm) 
TypeSilk/Polymer composite dome 
Midrange
Quantity
Diameter1 1/4" (3.17cm) 
TypeSilk/Polymer Composite dome 
Mid / Woofer
Oval Height9" (22.86cm) 
Oval Width6" (15.24cm) 
Quantity
TypeWoven Carbon Fiber with rubber surround 

Electrical

Total Frequency Response33Hz-25KHz 
Nominal Impedance4 ohms
Efficiency91 dB
Power Handling
Continuous100 watts
Peak300 watts

Dimensions

Oval Cut-Out Height8 11/16" (22.07cm) 
Oval Cut-Out Width5 7/8" (14.92cm) 
Full-Range Mounting Depth
Top Mount3 1/4" (8.26cm) 
Bottom Mount3 3/8" (8.57cm) 
Tweeter Mounting Depth
Surface Mount Height3/4" (1.91cm) 

Warranty

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.

MMC690 Media

MMC690 Literature

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Series Catalogs

MMC690 Accessories