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Section 6. - HANGING AND RIGGING INFORMATION FOR HLA
ARRAYS
Introduction
This section provides instruction on what components are required to suspend HLA arrays, and how to
connect them. The suspension points and hardware used to hang the array must meet applicable professional
rigging standards. It is important to note that standards for hanging and rigging are local, not universal. It is
also important for the user to contact appropriate regulatory agencies concerning relevant standards for specific
applications.
This document provides necessary information for the user to determine compliance with local or
national standards but is not to be construed as a universal instruction guide for suspending loudspeaker
systems. All parts constructed by JBL and ATM Flyware for use with the HLA system conform with known
standards.
For additional information on this topic, see JBL Technical Note Volume 1, Number 14. This document
explains basic principles for suspending loudspeaker systems and provides further references on this specialized
subject.
Design and Weight Calculations
HLA hardware is designed and certified with a 10:1 design ratio. For example, if the array weighs 2,000
lbs. (910 kg), all load-bearing components are capable of supporting at least 20,000 lbs. (9,100 kg) of static
weight. Correct use of HLA hardware is required for secure array construction.
Model 4895 and 4897 SpaceFrames with Lifting and Connecting Bars have been tested and rated for a
working load limit of 25,000 lbs. (11,400 kg) per unit. No more than ten HLA speakers should be supported by
HLA hardware. Careful calculations should be performed to ensure all components are used within their rated
work load before the array is suspended. Remember: the weakest component determines the weight capacity of
the entire array!
WARNING! Before suspending any array, always inspect all components of the array for cracks,
deformations, corrosion, and damaged or missing parts that could reduce strength and safety
of the array. Use only load-rated hardware. Never exceed maximum load ratings at any time.
Consult a licensed physical engineer if you are unsure how to proceed.
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