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GENERAL SET-UP INSTRUCTIONS
ALPHA SERIES USER MANUAL V1.0
DATE: 14/01/00 18:27
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Always survey the supporting structure upon which a ground stack is to be built. Always
look beneath PA wings to inspect the deck support and if necessary ask for the stage
scrims and dressings be removed to allow access.
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X-BOW components should be used to stabilise ground stacks and to ensure that
cabinets remain securely registered to each other. The X-HINGE can be used to connect
Alpha cabinets both vertically and horizontally at the rear and horizontally at the front
edge. In addition the Fly Track can be used as a connection point for a safety wire to a
secondary structure.
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If the stage surface slopes, as it does in some theatres, ensure that the system is
prevented from sliding forwards due to vibration. This may require the fitting of timber
battens to the stage floor.
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For outdoor systems ensure that that the system is protected from wind forces which
might cause the ground stack to become unstable. Wind forces can be huge, especially
upon large systems, and should never be underestimated. Observe meteorological
forecasts, calculate the likely effect upon the system prior to erection and ensure that the
system is secured appropriately.
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Take care when stacking cabinets. Always employ safe lifting procedures and never
attempt to build stacks without sufficient personnel and equipment.
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Never allow anyone, whether operators, artists or members of the public to climb onto a
ground stacked PA system. Anyone who needs to climb over 2m high should be fitted with
suitable safely equipment including a clip-on harness. Please refer to local Health and
Safety legislation in your territory. Your dealer can help with advice on access to this
information.
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Apply the same attention to all safety matters when de-stacking systems.
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Be aware that safety procedures are as important in the truck and in the warehouse as
they are at the venue.
