Groundstacking 1100-Lfc Loudspeakers; 1100-Lfc Cardioid Arrays; Mrk-1100 Rigging Kit - Meyer Sound 1100-LFC Operating Instructions Manual

CHAPTER 4: QUICKFLY RIGGING
GROUNDSTACKING 1100-LFC
LOUDSPEAKERS
1100-LFCs can be groundstacked up to four cabinets high,
with or without the MRK-1100 rigging kit (Figure 14).
Protective plastic skids are included on the bottom of the
1100-LFC cabinet that align with the slots on the cabinet top.
Loudspeakers can be stacked normally or reversed for
cardioid configurations. When groundstacking 1100-LFCs,
make sure the skids for each cabinet align with the slots in the
cabinet tops.
Figure 14: 1100-LFC Groundstack (Without Rigging)
CAUTION: As a safety precaution, to avoid
tipping, a maximum of four cabinets is
supported for groundstacked 1100-LFCs.
NOTE: 1100-LFCs need not be equipped with
the MRK-1100 rigging kit for secure ground-
stacking of up to four cabinets.

1100-LFC CARDIOID ARRAYS

The 1100-LFC can be configured in cardioid arrays to reduce
output heard behind the loudspeakers (Figure 15). The
loudspeaker's linearity ensures that cardioid patterns behave
accurately even at very high levels. Cardioid arrays are
achieved by placing three loudspeakers coplanar to each
other (in either a groundstacked or flown array) with one
loudspeaker facing the opposite direction. Polarity and delay
processing is applied to the rear-facing loudspeaker, which
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yields output that cancels the output of the front-facing
loudspeakers behind the array. Example: for the rear-facing
loudspeaker, reverse the polarity relative to the front-facing
loudspeakers and add 5.2 ms of delay relative to the front-
facing loudspeakers.
Figure 15: 1100-LFC Cardioid Groundstack (With Rigging)
NOTE: 1100-LFCs need not be equipped with
the MRK-1100 rigging kit for groundstacked
cardioid configurations of up to three cabinets.
NOTE: 1100-LFC cardioid arrays can also be
flown from the MTG-1100 grid. For more infor-
mation, refer to the MTG-1100 Assembly Guide
(PN 05.220.030.01) available at
sound.com.
NOTE: To achieve an accurate cardioid pattern,
Meyer Sound's MAPP prediction software and
the Galileo ® GALAXY Network Platform are required.
Use MAPP to calculate the appropriate ratio of forward
to rear-facing loudspeakers. A myriad of cardioid and
directional configurations are possible and can be cal-
culated and predicted with MAPP. For more informa-
tion, contact Meyer Sound Technical Support.

MRK-1100 RIGGING KIT

The optional MRK-1100 allows the 1100-LFC to be flown from
the MTG-1100 top grid. The rigging kit is available as a
factory-installed option or as a field upgrade and uses rugged
GuideALinks and intuitive quick-release pins to securely link
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