ELECTRO-VOICE
®
Xi-A Rigging Manual
1
Table of Contents
0. Rigging-Safety Warning .......................................................................................................................................... 2
I. Introduction
......................................................................................................................................................... 3
1.1 The Flying Xi-A Loudspeaker Systems .................................................................................................... 3
II. Basic Xi-A Rigging Primer ....................................................................................................................................... 3
2.1 Anatomy of an Xi-A Flying System ........................................................................................................... 3
2.2 The Rigging Hardware ............................................................................................................................. 4
2.3 The Xi-A Flying Concept .......................................................................................................................... 7
2.3.1 Accoustical Considerations ...................................................................................................... 7
2.3.2 Practical Considerations .......................................................................................................... 8
III. Associated Rigging Hardware for Flying Xi-A Loudspeaker Systems .................................................................. 10
3.1 Grids and Associated Rigging Hardware ............................................................................................... 10
IV. Strength Ratings, Safety Factors, and Special Safety Considerations ................................................................. 10
4.1 Strength Ratings and Safety Factors ..................................................................................................... 10
4.2 Special Safety Considerations for Xi-A Loudspeaker Arrays .................................................................. 12
4.3 Special Safety Considerations for Rigging Strap Assemblies ................................................................. 14
4.3.1 Redundant Attachment Points ................................................................................................ 14
4.3.2 Special Considerations for Polyester Webbing ....................................................................... 14
4.4 Special Safety Considerations for Grid & Building Structural Supports .................................................. 14
V. Rigging Inspection and Precautions ..................................................................................................................... 15
5.1 Xi-A System Components ...................................................................................................................... 15
5.1.1 Xi-A Loudspeaker Systems .................................................................................................... 15
5.1.2 Rigging Strap Assemblies ...................................................................................................... 15
5.2 Associated Hardware ............................................................................................................................. 15
5.2.1 Grid Assembly ........................................................................................................................ 15
5.2.2 Chain Hoists ........................................................................................................................... 15
5.2.3 Building Structural Supports ................................................................................................... 15
5.2.4 Mechanical Components ........................................................................................................ 16
VI. Appendices ....................................................................................................................................................... 17
Appendix A Xi-A Rigging Accessories ........................................................................................................ 17
Appendix B References ............................................................................................................................. 17
B.1 Accoustical References ............................................................................................................ 17
B.2 Mechanical References ............................................................................................................ 18
