Polk Audio DB522 with Sound Damping. Polk Audio DB522. 600W Peak (200W RMS) 5.25" DB+ Series 2-way Marine Coaxial Speakers with Sound Dampening. 5-1/4" Polk DB+ Series 2-way Coaxial Car Speakers. 600W Peak (200W RMS) 5.25" DB+ Series 2-way Car and Marine Certified Coaxial Speakers.
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