Electro-Voice DL18X is an 18-inch woofer with a 400-watt power handling capability and a frequency response of 40 Hz to 3000 Hz. It's designed for professional high-level, high-fidelity monitoring and sound reinforcement. The DL18X's carefully engineered drive system ensures linear, low-distortion output, high power capability, and improved heat transfer, reducing thermal dynamic-range compression. The high-excursion drive of the DL18X is augmented by two exclusive Electro-Voice features: the Thermo Inductive Ring (TIR™) and PRQTEF™ coating.