Section 6. Suspension Hardware; Safety Precautions - JBL VP7215 Product User Manual

SECTION 6 : SUSPENSION HARDWARE

Safety Precautions

Before attempting to suspend your speakers, read and understand the following safety information.
IMPORTANT SAFETY WARNING!
The information in this section has been assembled from recognized engineering data and is intended for
informational purposes only. None of the information in this section should be used without first obtaining
competent advice with respect to applicability to a given circumstance. None of the information presented
herein is intended as a representation or warranty on the part of JBL. Anyone making use of this information
assumes all liability arising from such use.
All information presented herein is based upon materials and practices common to North America and may
not directly apply to other countries because of differing material dimensions, specifications, and/or local
regulations. Users in other countries should consult with appropriate engineering and regulatory authorities for
specific guidelines.
Correct use of all hardware is required for secure system suspension. Careful calculations should always be
performed to ensure that all components are used within their rated workload before the array is suspended.
Never exceed maximum recommended load ratings.
Before suspending any speaker system always inspect all components (enclosure, suspension frames, pins,
etc.) for cracks, deformations, corrosion, missing, loose or damaged parts that could reduce strength and
safety of the array. Do not suspend the speaker until the proper corrective action has been taken. Use only
load-rated hardware when suspending VP Series loudspeakers.
Are You New to Rigging?
If you are new to rigging, you should do the following:
• Read and study JBL Technical Note Volume 1, Number 14: Basic Principles for Suspending Loudspeaker
Systems (available at http://www.jblpro.com/pub/technote/tn_v1n14.pdf).
• Know the Rules for Safe Loudspeaker Suspension.
• Attend a safe rigging seminar, such as that presented by professionals like Rigging Seminars™ or by Chain
Motor Hoist manufacturers like Columbus McKinnon Corp. (manufacturers of the C/M Lodestar).
• Meet and establish a relationship with a licensed mechanical or structural engineer. Get in the habit of asking
them questions instead of guessing about their answers. Learn from what they tell you.
• Meet and discuss this aspect of your business with your Insurance Agent.
• Research and understand the codes, practices, and requirements in the venues where you intend to operate
your sound system.
12
Venue Performance Series User's Guide