Driver Impedance: 4 ohm, Speaker Dimension: 40"(H) x 9"(W) x 10"(D)Driver Unit: Passive type, 2 way - 3 drivers, Driver Size: 5" Woofer x 2 - 1" Tweeter x 1, Frequency Response: 50 Hz ~ 25KHz, S/N Ratio: 87 dB +- 3 dB, Handling Power: 20 Watts ~ 150 Watts