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GROUND-STACKED, UPWARD FIRING ARRAYS
Applications such as covering stadium bleachers from the playing field may be addressed by installing the
VRX932LA-AF/VRX-AF/VRX-SMAF array frame to the bottom of the array.
Up to four VRX932LA-1/VRX928LA loudspeakers may be locked together and
ground stacked using the VRX array frame kit, as shown.
WARNING: Do not ground stack more than four VRX932LA-1/VRX928LA
loudspeakers in one array.
When ground stacking VRX900LA loudspeakers, use the VRX932LA-AF/
VRX-AF/VRX-SMAF array frame as the base (as shown) by attaching the loose
drop levers, included in the array frame kit, to the lower rigging bar on the
VRX900LA loudspeaker. When stacking the loudspeakers together, make sure
each loudspeaker is locked together. Be certain that the surface on which the
system is to be stacked is flat, stable and solid.
SUSPENSION IN PERMANENT INSTALLATIONS
For permanent installation applications a VRX array may be suspended using M10 eyebolts. Only load-rated,
forged shoulder eyebolts are to be used. A kit consisting of three (3) forged shoulder eyebolts is available from
JBL Professional as part number 229-00009-01. Suspension of the VRX array must employ both top attachment
points. The VRX918S and VRX915S subwoofers must always be at the top of the array.
EYEBOLT SUSPENSION
The following table defines the maximum number of speakers that may be suspended using the two M10
eyebolt attachment points provided on the cabinets. A minimum design factor of 7:1 is maintained for all
speaker configurations at or below those indicated in the table.
Maximum number of VRX918S in array 543210
Maximum number of VRX932LA-1 in array 024566
Maximum number of VRX915S in array 432220
Maximum number of VRX928LA in array 023456
EYEBOLT SUSPENSION ARRAY FRAME SUSPENSION
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All of the information in this section for VRX932LA-1 also applies to previous VRX932LA systems.
VRXpassive_UG_081808 copy.qxp 8/18/08 11:37 AM Page 20
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