RCF ART 312-A MK4 Aktivbox digital Features 128 dB Max SPL 800 WATT 2-way peak power DSP Processing with FiRPHASE 12" woofer, high power 2.5" voice coil 1" HF driver, mylar dome, 1.5" voice coil Technische Daten Acoustical Specifications Frequency Response -3 dB:50 Hz