Mackie HD1531 Owner's Manual - Page 8

HD1531 Rigging HD1531s may be individually flown horizontally or vertically using M10 X 1.5 X 37 mm forged shoulder eyebolts. WARNING: Installation should only be done by an experienced technician. Improper installation may result in damage to the equipment, injury or death. Make sure that the loudspeaker is installed in a stable and secure way in order to avoid any conditions that may be dangerous for persons or structures. WARNING: The cabinet is suitable for rigging via its fly points. NEVER attempt to suspend the HD1531 by its handles. Rigging Design Practices Rigging a loudspeaker requires determining: 1. The rigging methods and hardware that meet static, shock, dynamic, and any other load requirements for supporting the loudspeaker from structure. 2. The design factor for and the required WLL (Working Load Limit) for this support. Mackie strongly recommends the following rigging practices: 1. Documentation: Thoroughly document the design with detailed drawings and parts lists. 2. Analysis: Have a qualified professional, such as a licensed Professional Engineer, review and approve the design before its implementation. 3. Installation: Have a qualified professional rigger do the installation and inspection. 4. Safety: Use adequate safety precautions and backup systems. 12 Fly Points MP MP MP=Mounting Point MP MP MP Two per side Flown Horizontally Rear Fly Points (adjust angle) Side Fly Points MP MP MP MP MP MP Two on the rear Three each on the top and bottom Flown Vertically Top Fly Points  HD1531 Lower Rear Fly Point (adjusts angle)