Selecting Spreader-Bar Positions - JBL VTX Series Rigging Manual

10.4 - SELECTING SPREADER-BAR POSITIONS

Each one of the two Mini Frame sidearms includes 22 hole positions used for attaching the spreader-bar. The position of the spread-
erbar controls the overall side angle of the array. The further back the spreader-bar is attached the more down angle is generated and
vice-versa. The exact position of the spreader bar for a given angle is determined by using the JBL Line Array Calculator 3 software.
Position 14 corresponds to the Center-of-Gravity position of the B18, and it can be used to suspend B18s flat (straight). Position 14 is
marked as such on the Mini Frame sidearms.
EXAMPLES:
• Spreader-bar set to position 7 which creates up-tilt (in this case +29-degrees)
A
• Spreader-bar set to position 20 which creates down-tilt (in this case for a single B18 -29-degrees)
B
A
VTX B18 | Rigging Manual
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B