The SUB 8004-AS is a high-power 18-inch subwoofer delivering up to 2500 W peak and 136 dB max SPL for deep, precise low frequencies. Its 4-inch vented voice coil ensures accurate bass reproduction across 30 Hz – 120 Hz, while DSP-controlled input with selectable presets allows flexible system tuning. Features like delay control and a Baltic birch tour-grade cabinet make it road-ready and durable. Compatible with NXL23-A, NXL24-A, and HDL 10-A / HDL 20-A systems, it enables versatile stacking and system integration for professional live sound setups.