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Polk Audio db521 5-1/4" 2-way car speakers at Crutchfield
https://www.crutchfield.com/ISEO-rmsbcspd/p_107DB521/Polk-Audio-db521.html
Polk's db521 speakers feature 5-1/4" woofers made from a polymer/mica composite and durable rubber surrounds that won't fall apart under stress from heat, moisture, or time. Liquid-cooled 3/4" silk/polymer dome tweeters use powerful Neodymium magnets to deliver precise high-frequency reproduction, enveloping you in bright musical detail.
Polk Audio DB521 5-1/4 In. 2-Way Car Speakers | …
https://www.electronicexpress.com/catalog/11181/PolkAudio-DB521
Polk Audio DB521 5-1/4 In. 2-Way Car Speakers. At a Glance. Power range: 4-45 watts RMS (135 watts peak power) Frequency response: 60-22,000 Hz Sensitivity: 93 dB Dynamic Balance Polymer/Mica Composite Mineral Filled Cone is stiff yet lightweight for big sound, little distortion. Marine Certified Polk db Series speakers are built tough to withstand the toughest …
Polk Audio DB521 – Car Stereo Warehouse
https://www.carstereowarehousenc.com/product/polk-audio-db521
The db521 Features: Dynamic Balance® polymer/mica composite mineral filled cone is stiff yet lightweight for big sound, little distortion. Marine Certified Polk db Series speakers are built tough to withstand the toughest environments so they are perfect for use in boats of all types. 19mm liquid-cooled silk/polymer composite dome tweeter with ...
Get 2021's Best Deal On Polk Audio DB521 Marine Speakers ...
https://www.rocktheboatmarinestereo.com/html/77667.html
Polk Audio DB521 5.25" Coaxial (Pair) Silver 135 Watt Coaxial Waterproof Marine Speakers Code: DB521 Last Updated: 2022-01-31 12:17:30
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