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Polk Audio MM521 - 5-1/4" Coaxial Speaker

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Polk Audio MM521 - 5-1/4" Coaxial Speaker

Quick Overview

The MM521 is a 5 1/4 inch coax speaker designed to fit in a variety of applications. As a result of 3 years of Polk research and development, the new MM series have been designed to offer unparalleled sound quality with exceptional fit to meet virtually any application.


Woven honeycomb glass fiber composite woofer cone with butyl rubber surround
1" silk composite dome tweeter with swivel mount
Certified for marine use
Impedance: 2.7 ohm for extra power
Power Handling: 90 Watts RMS/200 Watts Peak
Frequency response: 50-25000 Hz
Sensitivity: 92 dB
Mounting depth: 2-3/8"