Air XD Sub 18 1 x 18" Active Extended Definition Subwoofer

The El AIR XD Sub 18 is a professional-grade active subwoofer with a 18-inch custom low-frequency driver designed for large-scale events and installations, offering deep, powerful bass with minimal distortion and advanced adjustment options.

• The description claims the subwoofer provides deep, powerful bass with minimal distortion.
• The description claims advanced adjustment options including variable low-pass filtering, delay alignment, and cardioid/end-fire presets.