background image

 

 

ARCS

ARCS

ARCS

ARCS

® 

WIDE SYSTEM 

WIDE SYSTEM 

WIDE SYSTEM 

WIDE SYSTEM / ARCS

ARCS

ARCS

ARCS

® 

FOCUS 

FOCUS 

FOCUS 

FOCUS SYSTEM

SYSTEM

SYSTEM

SYSTEM 

rigging manual

rigging manual

rigging manual

rigging manual    

 

VERSION 1.0 

 

ARCSWIFO_RM_EN_1-0 

w w w . l - a c o u s t i c s . c o m  

6

6

6

6

 

 

2

2

2

2

 

MECHANICAL

MECHANICAL

MECHANICAL

MECHANICAL    SAFETY

SAFETY

SAFETY

SAFETY    

2.1

 

Maximum configurations 

The  ARCS

®

  WIDE/FOCUS  rigging  system  has  been  designed  to  comply  with  BGV-C1  (2012)  and  EN  ISO  12100-1 

(2004) when implementing the following arrays: 

 

 

Horizontal 

Vertical 

Ground-

stacking 

n ARCS

®

WIDE/FOCUS  

2 ARCS

®

WIDE/FOCUS on top of 2 SB18m 

Flying 

Ratio of 

4 ARCS

®

WIDE/FOCUS 

for 1 WIFOLIFT bar 

With WIFOBUMP  

With WIFOBUMP and CLAMP250 

8 ARCS

®

WIDE/FOCUS 

or 

4 ARCS

®

WIDE/FOCUS and 2 SB18m 

or 

8 SB18m 

6 ARCS

®

WIDE/FOCUS 

or 

2 ARCS

®

WIDE/FOCUS and 1 SB18m 

or 

4 SB18m 

 

 

Mechanical safety of the shackles 

The 

bow

 shackles 

Ø12mm

 

provided by

 L-ACOUSTICS

®

 have a working load limit (WLL) of 

1000 kg 

with a 6:1 

safety  factor.  This  rating  is  in  accordance  with  BGV-C1  (2012)  recommendations  when  implementing  the 
maximum configurations authorized by L-ACOUSTICS

®

.  

 

 

 

Mechanical safety of the rigging system 

Maximum configurations indicate the maximum number of enclosures which can be safely arrayed without the 
need  for  SOUNDVISION  modeling.  For  more  enclosures,  model  the  system  in  SOUNDVISION  and  check 
the 

Mechanical Data

 section for any 

stress warning 

or 

stability warning

 
 

 

2.2

 

Assessing mechanical safety 

In order to assess the actual safety of any array configuration before implementation, refer to the following warnings: 
 

 

Rated working load limit (WLL) is not enough 

The rated WLL is an indication of the element resistance to tensile stress. For complex mechanical systems 
such as loudspeaker arrays, WLLs cannot be used per se to determine the maximum number of enclosures 
within an array or to assess the safety of a specific array configuration. 

 

 

Mechanical modeling with SOUNDVISION  

The  working  load  applied  to  each  linking  point,  along  with  the  corresponding  safety  factor,  will  depend  on 
numerous variables linked to the composition of the array (type and number of enclosures, splay angles) and 
the implementation of the flying or stacking structure (number and location of flying points, site angle). This 
cannot be determined without the complex mechanical modeling and calculation offered by SOUNDVISION. 

 

 

Assessing the safety with SOUNDVISION 

The overall safety factor of a specific mechanical configuration always corresponds to the lowest safety factor 
among all the linking points. Always model the system configuration with the SOUNDVISION software and 
check  the  Mechanical  Data  section  to  identify  the  weakest  link  and  its  corresponding  working  load.  By 
default, a 

stress warning

 will appear when the mechanical safety goes below the recommended safety level. 

 

 

Safety of ground-stacked arrays in SOUNDVISION 

For  ground-stacked  arrays,  a  distinct 

stability  warning

  is  implemented  in  SOUNDVISION.  It  indicates  a 

tipping  hazard  when  the  array  is  not  secured  to  the  ground,  stage  or  platform.  It  is  user  responsibility  to 
secure the array and to ignore this warning. 

 

 

Consideration must be given to unusual conditions 

SOUNDVISION  calculations  are  based  upon  usual  environmental  conditions.  A  higher  safety  factor  is 
recommended with factors such as extreme high or low temperatures, strong wind, prolonged exposition to 
salt water, etc. Always consult a rigging specialist to adopt safety practices adapted to such a situation. 

Summary of Contents for ARCS WIDE

Page 1: ...RCS WIDE WIDE WIDE WIDE SYSTEM SYSTEM SYSTEM SYSTEM A A A ARCS RCS RCS RCS FOCUS FOCUS FOCUS FOCUS SYSTEM SYSTEM SYSTEM SYSTEM RIGGING MANUAL RIGGING MANUAL RIGGING MANUAL RIGGING MANUAL VERSION 1 0 w...

Page 2: ...fy that the Working Load Limit WLL of the suspension points chain hoists and all additional hardware rigging accessories is respected 8 Respect the maximum configurations and the recommended safety le...

Page 3: ...formation on rigging the system properly and safely Carefully read this document in order to become familiar with these procedures As part of a continuous evolution of techniques and standards L ACOUS...

Page 4: ...ayable in a constant curvature line provided with 2 WIFORIG coupling bars equipped with the LOCKTAB locking tab ARCS FOCUS Full range enclosure arrayable in a constant curvature line provided with 2 W...

Page 5: ...1 0 w w w l a c o u s t i c s c o m 5 5 5 5 Components involved in the rigging process of ARCS WIDE SYSTEM ARCS FOCUS SYSTEM WIFOBUMP SB18m SOUNDVISION WIFOLIFT CLAMP250 ARCS WIDE ARCS FOCUS WIFOSOCK...

Page 6: ...an indication of the element resistance to tensile stress For complex mechanical systems such as loudspeaker arrays WLLs cannot be used per se to determine the maximum number of enclosures within an...

Page 7: ...ARCS WIDE FOCUS enclosures on top of the subwoofers side by side with rails aligned Remove top WIFORIG bars from their storage location Slide and lock WIFORIG bars into all top adjacent rails of ARCS...

Page 8: ...ing hole s by modeling the system in SOUNDVISION Vertical Place the first enclosure WIDE FOCUS or SB18m on the floor For an array with 2 SB18m place and lock a second SB18m on top of the first one Ref...

Page 9: ...o bridled hang 2 load bearing lines RIGGING Slide the bar into adjacent rigging rails from the front of the array STORAGE Engage the bar into both storage pins Secure the bar with the locking tab a Ac...

Page 10: ...angle As many variables can affect the actual site angle it is recommended to use an inclinometer Secure a shackle or CLAMP250 to the identified hole a Attach the shackle or the CLAMP250 bar to the id...

Page 11: ...rn rotation to the three screws with a coin or a screwdriver Insert the pin into the appropriate angle hole PROCEDURE C Mounting the WIFOSOCK socket The pin being removed WIFOSOCK being placed WIFOSOC...

Page 12: ...onfiguration is an array of 4 ARCS WIDE FOCUS enclosures A Vertical array B Horizontal array Rear pick up point s Attach a quick link DIN 56926 B 140 to the hole of the WIFORIG bar opposite to each WI...

Page 13: ...OCUS enclosures in vertical position Both the tray and cap should feature a foam insert cut according to the pattern illustrated below This one allows for the different enclosure combinations 2 ARCS W...

Page 14: ...SYSTEM WIDE SYSTEM WIDE SYSTEM ARCS ARCS ARCS ARCS FOCUS FOCUS FOCUS FOCUS SYSTEM SYSTEM SYSTEM SYSTEM rigging manual rigging manual rigging manual rigging manual VERSION 1 0 ARCSWIFO_RM_EN_1 0 w w w...

Page 15: ...ARCSWIFO_RM_EN_1 0 w w w l a c o u s t i c s c o m 15 15 15 15...

Page 16: ...ce ARCSWIFO_RM_EN_1 0 Distribution date September 25 2012 2012 L ACOUSTICS All rights reserved No part of this publication may be reproduced or transmitted in any form or by any means without the expr...

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