Oxygen Audio SPIRAL5 5.25 inch. 2-Way Component, 120 Wattts RMS (O2 SPIRAL-5) Size: 5.25'/1' 2 - way Power (WRMS): 120W Magnet size: 10OZ Frequency range: 77HZ/28KZ Sensitivity: 87, 1W/1M/2V (dB)