The SUB 9007-AS is one of the most powerful 2x21” subwoofers in the field of live sound. Featuring two, high power, hyper-vented 21” neodymium woofers with 4.0” inside-outside voice coils, this cabinet deliver a serious amount of low frequencies. Powered by a 7200 W digital amplifier, the SUB 9007-AS can perform in the most demanding situations. The housing of the SUB 9007-AS match the RCF D-Line HDL 50 and HDL 20 array systems, enabling stacked systems matched a perfect combination.Features7200 Watt Peak power - 3600 Watt RMS143 dB max SPL25 Hz - 120 Hz frequency response2 x 21" WooferDSP controlled Input section with selectable presetsDelay controlIntegrated mechanics for multiple configurations with HDL50-A, HDL20-A, HDL10-ARDNet remote and controlBaltic birch tour grade cabinetAcoustical Specifications Frequency Response -3 dB: 20 Hz ÷ 400 HzMax SPL: 141 dBWoofer: 2 x 21", 4.0" v.c. Input/Output Section Input signal: bal/unbalInput connectors: XLROutput connectors: XLRInput sensitivity: +4 dBu Processor Section Crossover frequencies: Selectable HzProtections: Thermal, RMSLimiter: Fast limiterControls: Gain, EQ, Xover, Phase switch, Output Delay Settings, CardioidAmplifier Specifications Total power: 7200 W PEAK Low frequencies: 7200 W PEAKTotal power: 3600 W RMS Low frequencies: 3600 W RMSCooling: ConvectionConnections: Powercon in/out, RDNet connectors Cabinet Cabinet Material: Baltic BirchHardware: Mounting points, 2 x M20Handles: 8 sideColour: Black Physical Specifications Height: 708 / 27.89 mm/inchWidth: 1188 / 46.77 mm/inchDepth: 780 / 30.9 mm/inchNet Weight: 98 / 216.0 kg/lbs.