L-Acoustics LA-RAK, Руководство пользователя

Страница: 69 / 201

Rigging procedures
Flying an SB18/Kara mixed array or an SB18 standalone array
Using M-BUMP
Modeling and safety
Any system must be modeled before installation so as to ensure acoustical and mechanical conformity. This can be done
using L-Acoustics Soundvision Software which will assist the user to:
• Determine the number of required Kara enclosures.
• Calculate the array site angle and the inter-enclosure angles.
• Check the mechanical conformity of the system.
The M-BUMP can nominally y an array of up to 4 SB18/12 Kara or 16 SB18 along with all loudspeakers cables
(refer to Mechanical safety (p.26)). However, this maximum number can decrease in line with the array curvature
and/or the acoustic coupling conditions (depending on the selected operation mode as described in the Kara
User manual).
ALWAYS refer to the mechanical data and warning indications provided in
Soundvision Software ( Mechanical
Data section) to verify the mechanical conformity of the system before installation.
The Kara, SB18 and M-BUMP fully integrated rigging systems allow assembling the array with no need for any external
accessory.
The following rst procedure describes how to y a vertical SB18/Kara array using two M-BUMP. According to the array
composition, the SB18 enclosures can be rigged one by one or by pairs (as shown in the procedure). It is recommended
to rig the Kara by successively adding arrays of 3 enclosures (called ARRAY#1, ARRAY#2… in the order of appearance
in the procedure). The second procedure describes how to disassemble the array.
Array mounting
About this task
All along the procedure:
Strictly follow the sequence of the successive steps.
Systematically verify that each BLP is fully inserted.
Systematically verify that the bolt is fully screwed in and secured with safety pin on each shackle.
For clarity purposes the loudspeaker cabling procedure will not be described.
The loudspeaker cables will not be represented on the gures.
Use a strain relief to avoid mechanical stress at the connector locations due to cable weight.
The motor hooks or stingers will not be represented on the gures.
Procedure
1.
Place an M-BUMP at the rigging location. Turn it so that the text of the identication plate is readable and the laser
slits are directed towards the audience.
Kara owner's manual (EN) version 1.0 69