LS-6900 2.0 Computer Multimedia Speaker with 8 Ohms Impedance Speaker units: 3 inches full range (magnetically shielded) Impedance: 8 Ohms Frequency response: 20Hz to 20kHz Separation: >15dB S/N: >65dB Dimensions (L x W x H): 325 x 135 x 210mm Weight: 2.8Kg