JBL PRX812W - Technical Resources; Recommended Suppliers; Safe Rigging Practices; Working Load Limits

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Resources
Adaptive Technologies Group McMaster Carr
562.424.1100 Various locations in the USA
1635 E. Burnett Street For a location near you, visit
Signal Hill, CA 90755 them at www.mcmaster.com
www.adapttechgroup.com
JBL Professional - Tech Note Vol. 1 No. 14
“Basic Principles for Suspending Loudspeakers”
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Safe Rigging
JBL suspendable version loudspeakers are supplied with built-in internal brackets. The systems are designed
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practices. Improper installation may result in damage, injury or death.
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with rigging hardware and industry practices.
Working Load Limit
Working Load Limit for M10 Suspension Points:
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maintained with a safety factor of 5:1, provided no more than 470lbs/213kg from 2 points equally loaded, or no
more than 235lbs/106kg maximum from a single suspension point, is utilized in conjunction with industry
recognized safe rigging practices and the guidelines established within this manual.
For permanent installation applications utilizing the M10 suspension points order JBL 229-00009-01.
This kit includes three M10 x 35 mm forged shoulder steel eyebolts with washers.
WARNING
Suspension of JBL loudspeakers must employ a minimum of two attachment points. When “bridling” a JBL
loudspeaker system, two legs of equal length must be used. The rear attachment points are pull-back points and
are intended only for use in adjusting the down-angle of the speaker enclosure. Only the top and bottom
attachment points are intended for use as suspension points.
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permanent hearing damage to performers, production crew and audience members. Caution should be taken to
avoid prolonged exposure to SPL in excess of 90 dB.