GROUND-STACKED, UPWARD FIRING ARRAYS
Applications such as covering stadium bleachers from the playing field may be addressed by installing the
MG-AF / MG-SMAF array frame to the bottom of the array.
Up to four MG1932 / MG1928 loudspeakers may be locked together and
ground stacked using the MG array frame kit, as shown.
WARNING:
Do not ground stack more than four MG1932 / MG1928
loudspeakers in one array.
When ground stacking MG loudspeakers, use the MG-AF / MG-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 MG 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 an MG 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 MG array must employ both top attachment
points. The MG1918S and MG1915S 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 MG1918S in array
5
4
3
2
1
0
Maximum number of MG1932 in array
0
2
4
5
6
6
Maximum number of MG1915S in array
4
3
2
2
2
0
Maximum number of MG1928 in array
0
2
3
4
5
6
EYEBOLT SUSPENSION
ARRAY FRAME SUSPENSION
20
Содержание M G - A F
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