810CXBT/WG 810CXBT/WG – 8″ Coaxial Speaker, 70/25 Volt Transformer, Attractive GrilleEasy to mount one piece construction70 volt/25 volt selectableTransformer taps at .63W, 1.25W, 2.5W, 5W, 10W10 ounce strontium magnetFrequency range: 45-18,500 Hz