Diameter: 98 mm / 3.86 in Installation depth: 45.5 mm / 1.77 in Potenza Max: 200 W Potenza RMS: 100 W Frequency response: 3 KHz - 20 KHz Impedance: 4 Ohms Sensitivity: 104 dB Magnete: Ferrite Coil diameter: 25.4 mm / 1 in Bobina: Rame Diaphragm: Titanio