User ManualTable of ContentsImportant Safety Instructions2Contents3Features3Introduction3Hookup Diagrams4Rear Panel Features81. IEC AC Receptacle82. Power83. Inputs94. High Pass Outputs95. Full Range Outputs96. Polarity Invert97. Power Light On98. Level99. Sig/Limit LED1010. Thermal LED10The Ins and Outs of Polarity11Rigging12Rigging Design Practices12Rigging Hardware and Accessories12Rigging Notes12Fly Points12Important Rigging Reminder13Rigging Illustration Examples13Placement14Thermal Considerations14AC Power14Care and Maintenance14Appendix A: Service Information15Appendix B: Connections16Appendix C: Technical Information17HD1801 Frequency Response and Dimensions18HD1801 Block Diagram19HD1801 Limited Warranty20Size: 5.19 MBPages: 21Language: EnglishOpen manual