Polk Audio Polk Audio DB 652

Dynamic Balance is a proprietary Polk Audio technology using laser imaging to determine what combination of speaker materials create the least amount of resonance. Eliminating resonance in speakers results in a wide, smooth response and low distortion. The speaker baskets have multiple mounting holes and are designed to fit standard 3-hole 6-1/2, Ford's 4-hole 6-1/2, and 6-3/4 applications. (A speaker baffle should be used to seal the inner ring of screw holes in 6-3/4 installations.) The included adapte...