Electro-Voice EVF-1122D, EVF-2121S, EVH-1152S Table of Contents cont’, Rigging-Safety Warning

Table of Contents (cont’)

6.5	HRK Rigging Structural Ratings for Horizontal Clusters		46
	6.51	Using Tie Plates as Main Load-Bearing Suspension	47
	6.52	Suspension-Line Angles for HRK Kits	48
	6.53	Symmetry for Horizontal Clusters using HRK Kits	49
	6.54	Inner Connection Points	50
	6.55	Left-to-Right Horizontal Cluster Angles	50
6.6	Ratings for Outdoor Applications with Wind Loading		51
6.7	Electro-Voice Structural-Analysis Procedures		51
7.0 Rigging Inspection and Precautions			52
8.0 References			53
8.1	Rigging (Printed)		53
8.2	Mechanical Engineering (Printed)		53
8.3	Rigging (Websites)		53
Notes			54

Rigging-Safety Warning

This document details general rigging practices appropriate to the entertainment industry, as they would apply to the rigging of Electro-Voice EVF and EVH loudspeaker systems. It is intended to familiarize the reader with standard rigging hardware and techniques for suspending EVF and EVH loudspeaker systems overhead. Only persons with the knowledge of proper hardware and safe rigging techniques should attempt to suspend any sound systems overhead. Prior to suspending any Electro-Voice EVF and EVH loudspeaker systems overhead, it is essential that the user be familiar with the strength ratings, rigging tech- niques and special safety considerations outlined in this manual. The rigging techniques and practices recommended in this manual are, of necessity, in general terms to accommodate the many variations in loudspeaker clusters and rigging configura- tions. As such, the user is expressly responsible for the safety of all specific EVF and EVH loudspeaker cluster designs and rigging configurations as implemented in practice.

All the general rigging material contained in this manual is based on the best available engineering information concerning materials and practices, as commonly recognized in the United States, and is believed to be accurate at the time of original printing. As such, the information may not be directly applicable in other countries. Furthermore, the regulations and require- ments governing rigging hardware and practices may be superseded by local regulations. It is the responsibility of the user to ensure that any Electro-Voice loudspeaker system is suspended overhead in accordance with all current federal, state and local regulations.

All specific material concerning the strength ratings, rigging techniques and safety considerations for the EVF and EVH loud- speaker systems is based on the best available engineering information concerning the use and limitations of the products. Electro-Voice continually engages in testing, research and development of its loudspeaker products. As a result, the specifi- cations are subject to change without notice. It is the responsibility of the user to ensure that any Electro-Voice loudspeaker system is suspended overhead in accordance with the strength ratings, rigging techniques and safety considerations given in this document and any manual update notices. All non-Electro-Voice associated hardware items necessary to rig a complete EVF and EVH loudspeaker cluster (chain hoists, building or tower supports and miscellaneous mechanical components) are the responsibility of others.

Electro-Voice

June 2010

Electro-Voice EVF/EVH User Manual 3