Polk Audio 10" Subwoofer Ultramarine - Black UMS108BR. These Subwoofers by Polk Audio use air suspension technology in the woofer to provide stronger bass response with waterproof UV and corrosion-resistant protection. The Polk Audio 10in Svc Subwoofer...
Polk Audio 10" Subwoofer Ultramarine - Black UMS108BR. These Subwoofers by Polk Audio use air suspension technology in the woofer to provide stronger bass response with waterproof UV and corrosion-resistant protection. The Polk Audio 10in Svc Subwoofer...