Amazon.com: Polk Audio DB522 DB+ Series 5.25" Coaxial Speakers with Marine Certification, Black : Electronics
Rockford Fosgate R1525X2, Prime 5.25" Full Range Coaxial Car Speakers 80W 618952490697 | eBay
Amazon.com: BOSS Audio Systems P55.4C Phantom Series 5.25 Inch Car Stereo Door Speakers - 300 Watts (Pair), 4 Way, Full Range, Tweeters, Coaxial, Sold in Pairs, Hook Up to Amplifier : Electronics
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