Professional audio engineers looking for a high-performance, line-array system will be thrilled with the black RCF HDL 50-A 4K, a powered speaker module that is part of a long-throw concert line-array sound system for touring sound reinforcement for larger-sized venues, concert halls, and outdoor events. The speaker provides ultra-linear amplitude response, exceptional vocal clarity, and controlled deep bass—while also being easy to stack and fly. It is well suited to withstand the rigors of live sound reinforcement or rentals applications in performance venues, clubs, corporate spaces, houses of worship, mobile DJ setups, and more.

The HDL 50-A 4K is equipped with an 8000W peak, Class-D digital amplifier, which drives 4000W into the dual 12" woofers, 2000W into the four 6" mid-frequency drivers, and 2000W into the two 1.4" compression drivers. The integrated crossovers are set at 200 and 800 Hz. The speaker delivers a frequency response of 40 Hz to 20 kHz with a peak SPL output of 143 dB, and 90°H x 10°V coverage. The integrated DSP offers low-latency loudspeaker processing, while phase and amplitude are corrected using proprietary FiRPHASE technology conceived for delivering a natural and transparent sound, with a balanced stereo image.