M4 Stage MonitorThe d&b audiotechnik M4 is a high performance 2 way stage monitor featuring a 15" LF driver and a 1. 3" exit horn loaded HF coaxial driver with neodymium magnets. It offers a rotatable dispersion of 50 x 70, delivering a maximum sound pressure level of 140 dB. Weighing 20 kg (44 lbs), the M4's versatile design allows it to function both as a floor monitor and, when used upright, as a powerful PA loudspeaker with a 70 x 50 dispersion. Its robust