1. PS-15 contains constant directivity, un-parallel extensive tweeter and 15-inch woofer units. 2. Direction of speaker is adjustable according to the purpose; consist to horizontal and vertical compact or trapezoidal monitor. 3. Each speaker has multiple hanging devices for chain, foundation or frame installation. Technical Specifications: Power(W): 400 Impedance (ohms): 6 Transmit angle: Vertical: 50 Transver: 50-100 Sensitivity (dB): 103 Maximun Sound Pressure(dB): 128 Frequency Response(Hz): 45-17.5K Dimensions (D*H*W mm): 375*449*691