Appendix A: Assembling Arrays With The Grid - Meyer Sound LEO Series Assembly Manual

APPENDIX A: ASSEMBLING ARRAYS WITH THE GRID

The quick-release pins (0.25 in x 0.53 in, black button, PN 134.039
NOTE:
are referred to as loudspeaker pins below. The quick-release pins (0.25 in x 0.90 in, black button with 6 in lan-
yard, PN 134.036) that come with the grid are referred to as grid pins.
To assemble a LINA array with the MG-MINA/LINA/750-LFC grid:
1. Place the MG-MINA/LINA/750-LFC grid on the floor or road case in the approximate location where the rigging points
have been established and the motors have been hung. Orient the grid for the desired configuration:
Maximum Downtilt: Use this option to place the flown LINAs closer to the front of the grid, to achieve a few more
•
degrees of downtilt.
Maximum Uptilt: Use this option to place the flown LINAs closer to the rear of the grid, to achieve a few more degrees
•
of uptilt.
Use the Center of Gravity function in MAPP to determine which orientation distributes the front and rear
NOTE:
rigging load most evenly. See "Estimating the Center Pickup Point with MAPP" on page 31.
2. Attach 5/8-inch shackles to the desired attachment points on the MG-MINA/LINA/750-LFC grid.
If using only one of the center pickup points, use the Center of Gravity function in MAPP to determine
NOTE:
to which point to attach the shackle.
A 2-foot length of wire rope between the shackle and the motor hook is recommended to prevent the
NOTE:
chain bags from either resting on top of the enclosure, causing the chain to spill out, or from hanging in front of
the loudspeaker, obstructing the high-frequency acoustic output.
3. Lower the motors so the hooks can be attached to the 5/8-inch shackles. Once the shackles are secured to the chain
hooks, raise the grid slightly higher than the first stack of LINA loudspeakers to be linked.
4. Unstow the grid's links and pin them at the desired LINA angle with respect to the grid (for the maximum downtilt config-
uration, 0 or –5 degrees; for the maximum uptilt configuration, –5 or –10 degrees). Make sure to use the grid pins
included with the MG-MINA/LINA/750-LFC grid to pin the links.
5. Use the MCF-MINA/LINA caster frame to roll the first LINA stack into position under the grid. Up to five LINA loudspeak-
ers can be safely transported with the caster frame.
a. Remove the pins from the link slots of the top loudspeaker of the stack.
6. Lower the grid to within approximately 1 inch of the top LINA cabinet. Adjust the placement of the LINA stack so the top
cabinet's link slots align with the grid links. Bump the motors down so the grid links are inserted into the top cabinet's
link slots. Pin the grid links to the top cabinet using the loudspeaker pins included with LINA.
7. Check that each grid link is secured to the grid with the grid pins, and that each grid link is secured to the top cabinet
with the loudspeaker pins. Ensure that each cabinet of the stack is securely pinned to the one below by verifying that all
four GuideALinks of each cabinet are pinned to cabinet below it. Adjust the splay angles between the loudspeakers as
necessary.
To reduce the tension on pins when changing angles between loudspeakers, it may be necessary to
NOTE:
bump the motors or lift the loudspeakers by hand.
8. Attach the AC power, audio, and RMS cables to the loudspeakers.
that are included with each LINA
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