SPECIFICATION With 15mm MDF board cabinet RMS output power : 250w Frequency resonse : 65Hz-20kHz Driver :LF :12"x1 :HF :1"x1 Input impendance : 8 ohm System sensitivity :97 dB Maximum : 126 dB Dimension : (34.5+41.5) x 43.5 x 67.5 cm.