- 8†speaker combination with transformer & mounted grille - 5 oz. magnet - 5W dual 70/25V transformer (with taps of 5W, 2.5W, 1W, 0.5W, 0.25W & 8 Ohms) - 85Hz â€" 20kHz Frequency Response - 10W RMS Power - 15W Max. Power - 8 Ohms - Sensitivity: 90±3dB (1W/1M) - Outer Dimensions: 13†(Dia.) x 3.5†(D) - Cut-Out Dimensions: 11.3†(Dia.)