WS-18 
 Components (components): VLF 1 × 18 "(460mm) 
 Connectors (connectors): 2 × NEUTRIK NL4 
 Frequency Response (Frequency): 40Hz-120Hz ± 3dB 
 Sensitivity (1W/1M) (sensitivity): 99dB 
 Maximum sound pressure (the maximum sound pressure): 128dB 
 Rated Power (Rated Power): 500Watts 
 Maximum power (maximum power): 1000Watts 
 Nominal Impedance (nominal impedance): 8Ω 
 Recommended Amplifiers (Recommended amplifier): 400 to 450Watts into 8Ω 
 Height × Width × Depth (H × W × D): 890 × 561 × 595mm 
 Weight (Weight): 45kg 
 WS-18 speaker system with ultra-low-WF-12 or WF-15, and Full-frequency system, used to expand or enhance the low frequency output. 
 S-18 to configure a direct-style 18-inch (460mm) low frequency driver, voice coil is a 4-inch (100mm) high temperature voice coil, 
 Have a strong impact force and the expansion of the middle of low-frequency bass output.