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MG-3D/M MULTIPURPOSE GRID AND ACCESSORIES
PN: 05.132.036.01 B2
Page 18 of 32
Meyer Sound Laboratories Inc.
www.meyersound.com
T: +1 510 486.1166
F: +1 510 486.8356
NOTE 1: For center point configurations, up to 14 M3D loudspeakers with a 5:1 safety factor or 10 M3D
loudspeakers with a 7:1 safety factor can be flown only under the following conditions:
Monitoring of the stress load on the two rigging points is done with load cells between the hoist and
the MG-3D/M multipurpose grid, so that either the front or back pickup point used to hang the MG-
3D/M does not exceed 4700 lbs (2131 kg) at 5:1 or 3350 lbs (1520 kg) at 7:1 on the center pick-up
hole.
The total load must be calculated so that it is spread between the front and back points at the final
array position (grid angle and accumulative splay angle of the system) and does not exceed the
above stated weights on either the front or rear point.
The MG-3D/M grid plus 14 M3D loudspeakers weighs approximately 6000 lbs (2721.55 kg). As long as
that total weight is split between the front and rear points so that neither point supports more than 4700
lbs (2131 kg) at 5:1 or 3350 lbs (1520 kg) at 7:1, the safety factors are maintained.
NOTE 2: For corner point configurations, up to 16 M3D loudspeakers at a safety factor of 5:1 and 7:1
can be flown only under the following conditions:
Monitoring of the stress load on the four rigging points is done with load cells between the hoist
and the MG-3D/M multipurpose grid, so that either the front or back set of points used to hang the
MG-3D/M grid do not exceed the total weight load of 6000 lbs (2721.55 kg) at 5:1 or 5250 pounds
(2381.36 kg) at 7:1.
The total load must be calculated so that it is spread between the front and back points at the final
array position (grid angle and cumulative splay angle of the system) and does not exceed the above
stated weights on either the front or rear set of points.
The MG-3D/M grid plus 16 M3D loudspeakers weighs approximately 7000 lbs (3175.15 kg). As long that
total weight is split between the front and rear set of points so that neither set supports more than 6000
lbs (2721.55 kg) at 5:1 or 5250 pounds (2381.36 kg) at 7:1, the safety factors are maintained.
NOTE: Use the Meyer Sound array rigging calculator to compute center-of-gravity data and load
distribution between front and back points. Visit www.meyersound.com/arraycalculator to download.
CAUTION: This calculator has been found to match actual load cell measurements to within 16% of the
total weight of the array, and within 3.5 degrees of top grid angle.