User ManualTable of ContentsImportant Safety Instructions2Contents3Features3Introduction3Hookup Diagrams4Rear Panel Features71. IEC AC Receptacle72. Power73. Inputs84. High Pass Outputs85. Full Range Outputs86. Polarity Invert87. Power Light On88. Level89. Sig/Limit LED910. Thermal LED9The Ins and Outs of Polarity10Placement11Thermal Considerations11AC Power11Care and Maintenance11Appendix A: Service Information12Appendix B: Connections13Appendix C: Technical Information14HD1501 Frequency Response and Dimensions15HD1501 Block Diagram16HD1501 Limited Warranty17Size: 2.95 MBPages: 18Language: EnglishOpen manual