▪ About this operating manual: Signal words
▪ Important safety instructions
▪ About this manual
▪ Safety Icons
▪ Signal Words
▪ User Manual Structure
▪ Introduction
▪ Getting to know the 18S
▪ Unpacking
▪ Packaging material
▪ Disposal
▪ Carton contents
▪ Installation
▪ Positioning
▪ Mains and signal connections
▪ 18S Connections Schemes
▪ Control and configuration
▪ Subwoofer controller
▪ Configuration and Use
▪ General Tips
▪ 18S Configuration Menus
▪ In use
▪ Cleaning your subwoofer
▪ Support
▪ Updating the Firmware
▪ Requirements
▪ Firmware Update Procedure
2 Professional Audio Subwoofers User manual