EM Acoustics HALO bi-amplified line array system - Manual (Page 29)

Page 29 of 39
HALO system User Manual
V2.2 August 2010
5.0 - Ground Stacking a HALO System
The HALO system can be easily ground-stacked where necessary. The methods described
below describe ground-stacking the system both with & without subwoofers.
Method A – With HALO-S subwoofers
The best way to imagine a ground-stacked HALO system is simply a flown system upside
down. So, the first step is to move the base board from the HALO-S enclosure due to go
on the bottom of the stack. In normal use, this board would be on the bottom of the
enclosure (so that when sat on its feet, the EM logo is on the left of the enclosure as you
look at it. Remove the four countersunk bolts in the board and move this board to the top
of the enclosure. You can then position the HALO-S enclosure in the desired location,
ready to assemble the system. Additional HALO-S subwoofers can be added to the stack if
required, by removing the base board completely, turning the enclosure upside down and
stacking in place as before.
The SLG-HALO grid must now be prepared as in the section above, turned upside-down
and secured to the HALO-S as before. You are now ready to assemble the HALO array
itself.
As the HALO enclosures have to be turned upside down, unless you have already prepared
these upside down in their flightcases or wheelboards, we would recommend attaching
the enclosures one at a time. Simply repeat the procedures detailed above for a flown
system, attaching each enclosure one at a time.
Method B – Without HALO-S subwoofers
For ground-stacking HALO systems without the HALO-S, only use the MFG-HALO grid as
the FG-HALO grid will not provide a stable enough base for the system. Prepare the grid
as detailed in the flying arrays section above, turn it upside down and securely strap the
grid down to a level & stable surface. You can then attach your HALO enclosures. As
before, as the HALO enclosures have to be turned upside down, unless you have already
prepared these upside down in their flightcases or wheelboards, we would recommend
attaching the enclosures one at a time. Simply repeat the procedures detailed above for a
flown system, attaching each enclosure one at a time.
IMPORTANT NOTE:
In order to maintain the stability of the stacked system, do not ground-stack
more than 8 HALO enclosures high.