Martin Audio WS18X 18" Sub

The WS18X is a high performance sub-bass system designed for use with small to medium Wavefront systems, in both touring and install applications. It features a 1000 watt 18” (460mm) drive unit with magnet structure and suspension engineered for maximum linear excursion.
 
Features
 
Direct radiating, long excursion 18” (460mm) driver
High temperature 4” (100mm) voice coil
High power 132dB continuous, 138dB peak
Fitted with integral handles and castors
 
Applications
 
Theatre sound systems
Small to medium touring systems
Club sound reinforcement
Special effects sub-bass