2
THE SYSTEM DESIGN
The W8L suspension system allows arrays of loudspeaker cabinets to be
vertically suspended or 'flown' from suitably secure and appropriately load
rated rigging points in the roof structure of a theatre, hall or indoor arena.
The W8L suspension system is rated with a safety factor of 7:1 and is
solely and exclusively intended for use with the W8L loudspeaker
enclosure.
2.1
W8L Rigging System Overview
The rigging system consists of the following components:
• A suspension frame (grid) from which a column of W8L’s is suspended.
One frame per column is required.
• Front and rear connecting mechanisms integral to the W8L cabinet.
• Quick-release pins, captive in the cabinet.
2.2
Chain Motors
A chain motor is an additional component used to lift the suspension
system into position. A chain motor is specified by its maximum safe lifting
capacity in US tons or metric Tonnes. For example, a 1 ton motor is
capable of lifting 1 ton
Note:
1 US ton = 2000lbs/907Kg
1 Tonne = 1000Kg/2205lbs
2.3
The Suspension Frame (see appendix 1)
The W8L suspension frame has two main pick-up points, one at the front
and one at the rear. The line between the two points passes through the
left/right centre of gravity of the array ensuring a straight hang when viewed
from the front. The two pick-up points can each be attached to separate
chain motors to distribute the load between the two points or allow the
entire array to be tilted within certain limits. Alternatively, the two points can
be attached to a single chain motor via a bridle if flown from a crane hook
or when only a single overhead flying point is available.
Additional points are provided either side of the main front and rear points,
to permit alternative four-point bridle/motor configurations.
Martin Audio – W8L Flying System
E
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