A 1400W class D two channel amplifier drives the system. A powerful DSP processes the sound including frequency division (crossover), phase correction, limiting and protection.  The system features state-of-the-art RCF drivers - two powerful 6.0 woofers for solid bass reproduction, along with a high-power 1.7 voice coil compression driver coupled to an accurate waveguide. 100 ° x 10 °, which achieves great vocal clarity with high definition and incredible dynamics. The HDL 12-AS is the ideal flying bass complement to the HDL 6-A line array system. Features 1400W two-way digital amplification 131 dB SPL Max Neodymium compression driver with 1.7 voice coil 2 x 6.0 neodymium high-power woofers 48 kHz 32-bit floating point DSP processing Symmetrical design Extremely low weight FIRPHASE processing Specifications FREQUENCY RESPONSE: 65 Hz ÷ 20000 Hz MAX SPL @ 1M: 131 dB HORIZONTAL COVERAGE ANGLE: 100° VERTICAL COVERAGE ANGLE: 10th COMPRESSION DRIVER: 1 x 1.0 '''' neo, 1.75 '''' vc BASS SPEAKER: 2 x 6.0 '''' neo, 2.0 '''' vc INPUT SIGNAL: bal/unbal INPUT CONNECTORS: XLR OUTPUT CONNECTORS: XLR INPUT SENSITIVITY: +4 dBu CROSSOVER FREQUENCIES: 900 Hz PROTECTIONS: Thermal, RMS LIMITER: Soft Limiter CONTROLS: HF correction TOTAL POWER: 1400 W Peak, 700 W RMS TREBLE: 400 W Peak, 200 W RMS LOW FREQUENCIES: 1000 W Peak, 500 W RMS COOLING: Convection CONNECTIONS: Powercon IN / OUT CE MARKING: And it it CABINET/CASE MATERIAL: PP Composite PHYSICAL EQUIPMENT: Array fittings HANDLES: 2 back RACK: Steel COLOR: White HEIGHT: 237 mm / 9.33 inches OVERALL WIDTH: 470 mm / 18.5 inches DEPTH OF PACKAGE: 377 mm / 14.84 inches PACKAGE WEIGHT: 11.6 kg / 25.57 lbs