The Biggest member of RCF’s ART7 series is the powerful ART745A Mk4 it is the flagship speaker in its category With 700w RMS (500w going to the 15″ woofer, and 200w powering the 1.4″), ART745A Mk4 works comfortably in front of a band as your Front of House speaker system. The 4.0″ voice coil neo compression driver offers a unique vocal clarity and sound projection, while the 15″ woofer offers a linear response and precise, deep low frequency control. Maybe it’s the FiRPHASE RCF speakers are designed by using FiRPHASE, a proprietary and advanced FIR filtering technology, conceived for delivering transparent sound, absolute clarity and perfect stereo images to the listener. The FiRPHASE algorithm optimises dynamics, amplitude and phase patterns, ensuring at the same time minimum system latency. Needless to say, we’re impressed.