Polk Audio AA2521-A MM521 5.25-Inch Coax Speaker

by Polk Audio

Product Details

• Item Weight: 1 pounds
• Shipping Weight: 6 pounds (View shipping rates and policies)
• Shipping: Currently, item can be shipped only within the U.S.
• ASIN: B001E5JWFY
• Item model number: AA2521-A
• Average Customer Review: 4.4 out of 5 stars  See all reviews (5 customer reviews)
• Amazon Best Sellers Rank: #41,500 in Electronics (See Top 100 in Electronics)

Product Description

Introducing the new Mobile Monitor (MM) Series high performance loudspeaker systems, the next generation in mobile loudspeaker design. The MM Series features 18 new models, including 3 Ultra Marine designs, to fit virtually any application on land and water. The MM Series is composed of 6 full range systems, 3 component packages and 9 subwoofers. As a result of 3 years of Polk research and development, the new MM systems have been designed to offer unparalleled sound quality with exceptional fit to meet virtually any application. Borrowing technology from our flagship SR Series, the MM Series offers exceptional value for the price. Through the use of high-tech carbon composite baskets, powerful Neodymium motor structures using oversized voice coils, and state-of-the-art woven glass composite cones, we offer high-end audio performance normally found only in the most expensive loudspeaker systems. In addition, these space age materials offer weight savings that can mean higher performance for your car or boat.

Customer Reviews

Most Helpful Customer Reviews

2 of 2 people found the following review helpful:

5.0 out of 5 stars Polk MM521 speakers in Harley Davidson, June 11, 2010

By 

Mark Frost - See all my reviews
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Amazon Verified Purchase

This review is from: Polk Audio AA2521-A MM521 5.25-Inch Coax Speaker (Electronics)

I upgraded my stereo on my 2010 Ultra Limited by installing an Alpine KTP-445 Amplifier and a set of marine grade Kicker Speakers that are designed for the Harley Batwing Fairings. The fronts were KS5250 and the rears were DS5250. I took a ride and was not happy with the front speakers. I did a little research and purchased the Polk Audio MM521 marine grade speakers for the fronts. I removed the outer fairing and installed the speakers. The Polk speakers have a crossover that wires directly into the original wires that were attached to the Kicker Speakers. I also run a Hog Tune Tweeter Bar on the front inner fairing above the CD player. I was pleasantly surprised with the vast improvement of the sound sytstem after install of the Polk MM521 speakers. Volume, clarity and bass are all vastly improved. I am a happy rider. I only have to wipe the blood from my ears after turning off the stereo.

4.0 out of 5 stars Loud, High Power Eaters!, June 25, 2011

By 

Tracy A. Beall (Lafayette, IN) - See all my reviews
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Amazon Verified Purchase

This review is from: Polk Audio AA2521-A MM521 5.25-Inch Coax Speaker (Electronics)

I've got a 120Wx2ch RMS amp that is pushing these babys to the max! Great midrange sound! Solid construction, neodynium magnets, very light. Don't let the weight fool you. These are nice speakers. Tweeters are silky sounding, but a bit drowned out by the mid. Would be perfect with a pair of high powered tweeters mounted up high.

5.0 out of 5 stars perfect for jeep soundbar, June 4, 2011

By 

argonaut - See all my reviews

Amazon Verified Purchase

This review is from: Polk Audio AA2521-A MM521 5.25-Inch Coax Speaker (Electronics)

Great speakers for the price. Fit perfectly. Look good. Marine certified(Jeep in hawaii). As long as you don't have unrealistic bass response expectations you should be happy. Crystal clear. Aloha.