Appendix A: M-Bump Flying Options - L-Acoustics SB18 Rigging Manual

SB18 SB18 SUBWOOFER SB18 SB18
rigging manual rigging manual
rigging manual rigging manual
VERSION 1.0
APPENDIX APPENDIX A A A A : : : : M-BUMP FLYING OPTIONS
APPENDIX APPENDIX
Site angle calculation
Refer to the modeling in SOUNDVISION software to determine the site angle of an array and the
corresponding rigging option for the flying structure.
®
L-ACOUSTICS recommends 5 different rigging options for the M-BUMP flying structure.
It is possible to use 0, 1 or 2 M-BAR, and 1 or 2 motor points. The orientation of the M-BAR when attaching it to the
M-BUMP will determine if the configuration is in front or rear extension.
Option 2 vs. Option 4
Both Option 2 and Option 4 offer a setting choice among a continuous range of angle values.
Option 4 in rear extension enlarges the setting range for negative site angles.
Option 4 in front extension enlarges the setting range for positive site angles.
Front or rear extension in SOUNDVISION software
When modeling a system in SOUNDVISION software, the rear extension of any rigging frame is indicated by
inv following the frame name in the Global Settings section of the Loudspeaker Data window.
SB18_RM_EN_1-0
Option 1: 1 motor point
• 1 shackle at 3 possible positions (front, center, rear)
• 3 discrete setting choices, for which the angle value depends on the number of
enclosures.
Option 2: 2 motor points
• 2 shackles at fixed front and rear positions (spacing 400 mm/15 inch)
Lock the front motor at the intended height for the array.
Adjust the rear point height to achieve the intended site angle.
Option 3: 1 motor point
• 1 shackle at a variable position (17 holes)
• 1 M-BAR at 4 possible positions (rear or front extension, A or B)
• 68 discrete setting choices, for which the angle value depends on the number of
enclosures.
Option 4: 2 motor points
• 2 shackles at fixed front and rear positions
(holes 0 and 16, spacing 900 mm/35 inch)
• 1 M-BAR at 4 possible positions (rear or front extension, A or B)
Lock the front motor at the intended height for the array.
Adjust the rear point height to achieve the intended site angle.
Option 5: 2 motor points
• 2 shackles at the same hole number (constant spacing 663 mm/26 inch)
but a variable position (17 holes)
• 2 M-BAR at 4 possible positions (rear or front extension, A or B) :
• 68 discrete setting choices, for which the angle value depends on the number of
enclosures.
w w w . l - a c o u s t i c s . c o m
14 14 14 14