Specifications: WooferMid range Tweeter Frequency Response:50 Hz ~ 2 KHz200 Hz ~ 12 KHz1200 Hz ~ 25 KHz Sensitivity:89.3 dB81.2 dB84 dB Nominal Impedance:4 Ohm4 Ohm4 Ohm DC Resistance (RE):3.7 Ohm4.9 Ohm3.9 Ohm Resonance Frequency (FS):55.78 Hz190 Hz1250 Hz Power Handling:125 Watts50 Watts30 Watts QMS: 5.15.040.76 QES:0.951.292.43 QTS: 0.81.030.58 VAS:7.7 L0.1 L0.001 L CMS:307 um/N81 um/N5.7 um/N MMS:19.4 g6.9 g2.8 g Voice Coil Diameter:1.5"1"1" BL:5.95.96 Magnet Type: StrontiumNeodymiumNeodymium XMAX: 4 mm