Martin Audio W8L Longbow Application Manual page 51

Load Indicators
Depending on the grid configuration the 'Rear Pick Load' and 'Front Pick Load' are
displayed as well as total mass. These loads as well as the forces between cabinets are
checked after each change of the array or grid.
Should either of the pick loads become less than zero or the inter-cabinet forces
become too high then a mechanical warning window will appear.
5.5.15.2 Stacked arrays
All material © 2007. Martin Audio Ltd. Subject to change without notice.