Pro-grade Power and Effortless Setup RCFs HDL 20-A is a professional-grade active line array module, fine-tuned from stem to stern for optimal acoustic performance. A dual pairing of 10-inch woofers and a single 1 x 3-inch compression driver produce a broad, full-range response thats ideal for both permanent installations and live sound situations where fast, easy setup is a must. The 2-way 1,400W digital amplifier allows the HDL 20-A to push out a seriously impressive 135dB max SPL with solid bass, optimal clarity, and a response thats perfectly suited for vocal applications. Whats more, the DSP-controlled input section includes a variety of selectable presets, cluster, HF high curving, and indoor mode, allowing the HDL 20-A to be tweaked and adjusted for almost any environment. Need just a touch more bass? The HDL 20-A is specially designed to be paired with the HDL 18-AS subwoofer for a total live sound solution.Top-shelf