Water. Salt. Sunlight. Heat. These are typical boating conditions that eat ordinary speakers for lunch, but the Nautica TS-MR1600 6-1/2? Dual Cone Speaker is built specifically for marine use. Its heavy-duty construction resists all these nasty conditions, delivering rich, full music to an afternoon cruise or to happy hour while docked. It features Pioneer?s extremely strong yet lightweight IMPP Cone Woofer, for improved sensitivity and reduced distortion. A Conex Damper delivers higher power handling and deeper bass, and the tinsel lead wire and terminals are gold-plated for extra protection.