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CHAPTER 5: QUICKFLY RIGGING
500-HP Load Ratings
Table 9 lists the maximum number of M'elodies that can be
safely suspended from a 500-HP. For MG-M'elodie load rat-
ings, see "MG-M'elodie Grid Load Ratings" on page 26
Table 9: 500-HP Load Ratings for M'elodie Arrays
Safety Factor
5:1
7:1
CAUTION:
When using 500-HP and M'elodie
!
arrays with the MG-M'elodie grid, never
exceed the load rating for the grid or the 500-HP.
500-HP CARDIOID ARRAYS
500-HP subwoofers can be configured in cardioid arrays to
reduce the amount of output heard behind the subwoofers.
Subwoofer cardioid arrays are archived by placing three
units coplanar to each other (in either a groundstacked or
flown array) with one unit facing the opposite direction. The
output of the reversed subwoofer cancels the output of the
other subwoofers normally present behind the units.
500-HP Cardioid Array
NOTE:
To achieve an accurate cardioid pat-
tern, a Galileo 616 is required. Use MAPP
Online Pro to calculate the appropriate ratio of for-
ward to rear facing loudspeakers, as well as the
required Galileo parameter settings for polarity, delay,
and gain. For more information, contact Meyer Sound
Technical Support.
30
M'elodies
15
12
THE MCF-500 CASTER FRAME
The heavy-duty MCF-500 caster frame can transport stacks
of up to three 500-HP subwoofers (fitted with or without
MRF-500 rigging frames). The caster frame can also be
used for groundstacking 500-HPs, though this option
requires that the four wheels be safely blocked.
MCF-500 Caster Frame
When transporting 500-HP stacks with the caster frame,
straps are highly recommended (see Figure 7), especially for
units without the MRF-500 rigging frames. When transport-
ing 500-HPs fitted with rigging frames, pin the GuideALinks
so the units are at 0 degrees to each other, thereby ensuring
their center of gravity is near the center of the caster frame.
Figure 7: MCF-500 Caster Frame with 500-HP Stack and Straps
NOTE:
For the MCF-500 caster frame dimen-
sions and weight, see "MCF-500 Caster Frame
Specifications" on page 46.
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