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WST K2
Rigging Manual
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L-Acoustics WST K2 Rigging Manual

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RIGGING MANUAL
VERSION 1.0
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DANGER
This symbol indicates a potential risk of harm to an individual or damage to the product. It can also notify the user about instructions that must be strictly followed to ensure safe installation or operation of the product.
OBLIGATION
This symbol notifies the user about instructions that must be strictly followed to ensure proper installation or operation of the product.
EQUIPMENT
This symbol indicates the equipment, tools, and spare parts required to perform a procedure.
INFORMATION
This symbol notifies the user about complementary information or optional instructions.
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RIGGING MANUAL
VERSION 1.0

SAFETY INSTRUCTIONS

1. Read this manual
2. Follow all SAFETY INSTRUCTIONS as well as DANGER and OBLIGATION warnings
3. Never incorporate equipment or accessories not approved by L-ACOUSTICS
4. Read all the related PRODUCT INFORMATION documents before exploiting the system
The product information document is included in the shipping carton of the related system component.
5. Work with qualified personnel for rigging the system
Installation should only be carried out by qualified personnel that are familiar with the rigging techniques and safety recommendations outlined in this manual.
6. Ensure personnel health and safety
During installation and set-up personnel must wear protective headgear and footwear at all times. Under no circumstances personnel is allowed to climb on a loudspeaker assembly.
7. Respect the Working Load Limit (WLL) of third party equipment
L-ACOUSTICS® is not responsible for any rigging equipment and accessories provided by third party manufacturers. Verify that the Working Load Limit (WLL) of the suspension points, chain hoists and all additional hardware rigging accessories is respected.
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8. Respect the maximum configurations and the recommended safety level
For safety issue, respect the maximum configurations outlined in this manual. To check the conformity of any configuration in regards with the safety level recommended by L-ACOUSTICS®, model the system in SOUNDVISION and refer to the warnings in Mechanical Data section.
9. Be cautious when flying a loudspeaker array
Always verify that no one is standing underneath the loudspeaker array when it is being raised. As the array is being raised, check each individual element to make sure that it is securely fastened to the adjacent element. Never leave the array unattended during the installation process. As a general rule, L-ACOUSTICS® recommends the use of safety slings at all times.
10. Be cautious when ground-stacking a loudspeaker array
Do not stack the loudspeaker array on unstable ground or surface. If the array is stacked on a structure, platform, or stage, always check that the latter can support the total weight of the array. As a general rule, L-ACOUSTICS® recommends the use of safety straps at all times.
11. Take into account the wind effects on dynamic load
When a loudspeaker assembly is deployed in an open air environment, wind can produce dynamic stress to the rigging components and suspension points. If the wind force exceeds 6 bft (Beaufort scale), lower down and/or secure the loudspeaker array.

SYMBOLS

The following symbols are used in this document:
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WELCOME TO L-ACOUSTICS®

Thank you for choosing the L-ACOUSTICS® K2 WST® system.
This document contains essential information 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-ACOUSTICS® reserves the right to change the specifications of its products and the content of its documents without prior notice.
Please check the L-ACOUSTICS® web site on a regular basis to download the latest document and software updates: www.l-acoustics.com.

K2 WST® SYSTEM

The L-ACOUSTICS® K1 system has achieved international recognition and is today the prime choice of engineers for the largest stadium tours and outdoor festivals. Its sonic performance, its fully integrated system package and its rider friendliness are considered as the industry benchmarks. With K2, L-ACOUSTICS® offers K1 performance in a rescaled package. The K2 system flexibility makes it suited to both permanent installation and touring applications, from theatre to stadium productions.
The main system components are as follows:
• K2, full-range element, with adjustable horizontal directivity, operating from 35 Hz to 20 kHz
• K1-SB, low-frequency element, reinforcing LF contour down to 30 Hz or LF throw down to 35 Hz
• SB28, low-frequency element, extending the operating bandwidth down to 25 Hz
• LA4X/LA8 amplified controllers or LA-RAK, touring rack fitted with three LA8
The 3-way quad amplified design, the transducers resources are among the characteristics giving K2 an exceptional ability to perform in many applications and with a record-breaking performance/weight ratio. Any on-site deployment can be easily and quickly achieved thanks to an extremely ergonomic, fast and captive rigging system.
A K2 line source utilizes the unrivalled characteristics of Wavefront Sculpture Technology®. Inter-element angles can be
set with laser like accuracy up to a generous 10˚, allowing the optimization of the vertical coverage with SPL smoothly
spread across the audience. Horizontally, the K2 coverage pattern can be adjusted to sector and match any audience or specific room geometries. Four different settings are possible: two symmetric (70° or 110°) and two asymmetric (90° as 35°/55° or 55°/35°).
Thanks to its full range capability, the K2 enclosure can be deployed as a standalone line source. For applications demanding extreme LF impact (contour mode), or maximized LF projection (throw mode), K2 can be arrayed with its dedicated and flyable K1-SB LF extension. The K2 system can also address applications with demanding infrasonic reproduction when combined to the SB28 subwoofer. Before installation, any system configurations can be acoustically and mechanically modeled with SOUNDVISION 3D simulation software.
For touring applications, K2 can be associated to the LA-RAK, a universal distribution platform for power, audio signals and network which facilitates cross rental between rental companies. LA-RAK houses three LA8 amplified controllers and can be flown onto a K2 array. Other applications can feature LA8 amplified controllers. For high-end installation projects, K2 can also be driven by the LA4X amplified controller. The scheme authorizes fully discrete DSP treatment per section and maximum power headroom for the best possible sonic performance.
Thanks to dedicated factory presets, the LA8/LA4X amplified controller constitutes an extremely advanced and precise drive system for the enclosures. All L-ACOUSTICS® amplified controllers feature the L-DRIVE, a thermal and over­excursion protection circuit.
Up to 253 LA8/LA4X amplified controllers can be connected together via the Ethernet-based L-NET protocol. The LA NETWORK MANAGER software allows online remote control and monitoring of all the connected units, via a user­friendly and intuitive graphic interface, and features the Array Morphing EQ. This exclusive tool allows the engineer to quickly adjust the tonal balance of the system to reach a reference curve or to ensure consistency of the sonic signature.
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RIGGING MANUAL
VERSION 1.0

CONTENTS

1 RIGGING SYSTEM 5
1.1 Loudspeaker enclosure ............................................................................................................................................................... 5
1.2 Rigging elements .......................................................................................................................................................................... 5
1.3 Software application .................................................................................................................................................................... 5
1.4 Accessories .................................................................................................................................................................................. 5
2 MECHANICAL SAFETY 7
2.1 Mechanical limits ......................................................................................................................................................................... 7
2.2 Assessing mechanical safety ......................................................................................................................................................... 7
3 RIGGING SYSTEM DESCRIPTION 8
3.1 Elements for enclosure rigging .................................................................................................................................................... 8
3.2 Elements for storage and transportation ..................................................................................................................................... 9
3.3 Elements for flying ..................................................................................................................................................................... 10
3.4 Elements for LA-RAK rigging ..................................................................................................................................................... 12
4 SYSTEM SETUP 14
4.1 Ground-stacking ........................................................................................................................................................................ 14
4.2 Flying ......................................................................................................................................................................................... 15
5 SUBSET PROCEDURES 17
Preparing a block of 4 K2 ..................................................................................................................................... 17 PROCEDURE A.
Preset the inter-enclosure angles ......................................................................................................................... 19 PROCEDURE B.
Stacking K2 on K2-BUMP .................................................................................................................................... 20 PROCEDURE C.
Attaching K2-BAR on K2-BUMP .......................................................................................................................... 23 PROCEDURE D.
Attaching a block of four K2 under K2-BUMP ..................................................................................................... 25 PROCEDURE E.
Attaching a block of four K2 under K2 ................................................................................................................. 27 PROCEDURE F.
Attaching a block of four K2 under a K1 system element .................................................................................... 31 PROCEDURE G.
Attaching K1 or K1-SB under K2-BUMP ............................................................................................................. 36 PROCEDURE H.
Stacking LA-RAK on K2-BUMP ............................................................................................................................ 37 PROCEDURE I.
APPENDIX A: PICKUP POINTS GUIDELINES 41
APPENDIX B: INSTALLING A LASER INCLINOMETER 45
APPENDIX C: SPECIFICATIONS 46
K2 .................................................................................................................................................................................................. 46
K1-SB .................................................................................................................................................................................................. 47
K2-BUMP .............................................................................................................................................................................................. 48
K2-BUMP-FLIGHT ................................................................................................................................................................................ 48
K2-BAR ................................................................................................................................................................................................. 49
K2-LINK ................................................................................................................................................................................................ 49
K2-RACKMOUNT ................................................................................................................................................................................ 50
K1-DELTA............................................................................................................................................................................................. 51
K2-CHARIOT ........................................................................................................................................................................................ 51
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1 RIGGING SYSTEM

K2
Full range enclosure, deployable in a variable curvature line source.
K1-SB
Dedicated subwoofer enclosure, deployable with K2.
K2-CHARIOT
Transport dolly for four K2 enclosures.
K2-BUMP
Rigging frame used to fly K2 line arrays. Designed to be compatible with K1 and K1-SB. Provided with two bow shackles WLL 3.25 t.
K2-BAR
Rigging bar designed to provide a wider range of site angles for the K2-BUMP. Provided with two bow shackles WLL 3.25 t.
K1-DELTA
Rigging plate designed to be used optionally with the K2-BUMP, to adjust the azimuth angle of flown K2 / K1 / K1-SB arrays.
K2-BUMPFLIGHT
Flight-case dedicated to the rigging elements of the K2 system. In order to be used as storage for the K2-BUMP it must be prepared using the foams provided with the product.
K2-LINK
Rigging interface between K2 and K1 or K1-SB.
K2-RACKMOUNT
Rigging interface for stacking one or two LA-RAK on top of a K2 array flown with a K2­BUMP.
K2-BPCHAIN
Adjustable sling used to prevent the chain bag of a climbing hoist being in front of a flown array top enclosure.
LA-SLING2T
Chain sling with two-leg bridles used to implement bridle hangs.
SOUNDVISION
Proprietary 3D acoustical and mechanical modeling software.
K2­CHARIOTCOV
Protective cover for transportation and storage
Other K2 SYSTEM components
All the other components of the system are presented in the K2 user manual, document intended to describe the enclosure configurations and connection scheme.
The system approach developed by L-ACOUSTICS® consists in providing packaged solutions for loudspeaker systems in order to guarantee the highest and most predictable level of performance at any step: modeling, installation, and operation. An L-ACOUSTICS® loudspeaker system is the set of components available to form any loudspeaker system based on one of the full-range loudspeaker enclosures afforded by L-ACOUSTICS®. It includes enclosures, rigging accessories, loudspeaker cables, amplified controllers and software applications.
The main components involved in the rigging process of a K2 system are the following:

1.1 Loudspeaker enclosure

1.2 Rigging elements

1.3 Software application

1.4 Accessories

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K2
K1-SB
LA-RAK
K2-BUMP
K2-BAR
K2-LINK
K1-DELTA
K2-RACKMOUNT
K2-CHARIOT
LA-SLING2T
K2-BPCHAIN
SOUNDVISION
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Main components involved in the K2 rigging process
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2 MECHANICAL SAFETY

Ground-stacked
Safe limit
Maximum limit
K2 on K1-SB with K2-BUMP
4 K2
6 K2
Flown
Safe limit
Maximum limit
K2-BUMP
K2-BUMP + K2-BAR
16 K2
14 K2 + 2 LA-RAK
12 K1-SB + 1 LA-RAK
24 K2
24 K2 + 2 LA-RAK
16 K1-SB + 2 LA-RAK
K2-LINK under K1-BUMP
16 K2
24 K2
SOUNDVISION and mechanical safety
To deploy more elements than the safe limits, or when mixing different type of loudspeaker enclosures within the same array, always model the system in SOUNDVISION before installation, and check the Mechanical Data section for any stress warning or stability warning.
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 beyond 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 on 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.

2.1 Mechanical limits

The K2 rigging system complies with 2006/42/EC: Machinery Directive. It has been designed following the guidelines of BGV-C1.
2006/42/EC: Machinery Directive specifies a safety factor of 4:1 against the rupture. The limits specified in the tables below correspond to deployments with a safety factor of 4:1 or higher. Refer to SOUNDVISION for the safety factor of a specific deployment.
The safe limit gives the maximum number of elements for which the safety factor is always compliant with the 2006/42/EC: Machinery Directive, regardless of the other deployment parameters (site angles, inter-enclosure angles, etc.).
The maximum limit gives the maximum number of elements for which the safety factor can be compliant with the 2006/42/EC: Machinery Directive, when the other deployment parameters provide the best mechanical conditions.

2.2 Assessing mechanical safety

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

K2 enclosures can be ground-stacked and flown independently (K2-BUMP) or in combination with K1 system elements (K1, K1-SB, or K1-BUMP).
The K2-BUMP is designed to be directly compatible with K1 and K1-SB. The K2 enclosure rigging system requires the K2-LINK interface to be compatible with the K1 rigging system.

3.1 Elements for enclosure rigging

On both sides, the K2 enclosure integrates two arms to connect to another element of the rigging system, such as an enclosure or to a flying frame.
At the front, a rotating arm provides a fixed point around which the enclosure can freely rotate until its
connection at the rear.
At the rear, a sliding arm allows the inter-element angle setting and the inter-element rear connection.
The angles between adjacent enclosures are secured by an automatic system that is activated in advance and locks itself during the stacking and lifting procedures.
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3.2 Elements for storage and transportation

TIPPING HAZARD
If the enclosures are not pinned at 10°, they can separate at the back, causing the stack to tip over.
The K2-CHARIOT is designed for the transportation and storage of blocks of four K2 enclosures.
During transportation the blocks must have an inter-enclosure angle of 10° to avoid any separation of the enclosures. This angle must be set using the enclosure rear rigging arm pin. The automatic locking system must remain unloaded.
The K2-CHARIOT rear rigging arm must be at its -15° site angle position.
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With K1-SB and a single motor the hole no 2 provides a 0° site angle.
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3.3 Elements for flying

The K2-BUMP is designed for flying line arrays of K2, K1 or K1-SB enclosures. 4 holes are available on the central bar of the K2-BUMP. Refer to your SOUNDVISION model to know which holes to use.
By adding a K2-BAR to the K2-BUMP, the site angle range can be increased. 21 holes are available on the K2-BAR which can be attached to the K2-BUMP as a rear or a front extension and in position A or B, thus offering a total of 84 discrete positions for pick-up points.
The rear extension is suited to downwards and front extension to upwards site angles.
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Standard: One K2-BAR attached in the center of K2-BUMP
Alternative: Two K2-BAR attached on the sides
The K2 system can be flown under a K1 system element, K1, K1-SB or K1-BUMP. The K2-LINK is designed to make the rigging systems compatible.
It provides three holes and therefore three angles between the top K2 enclosure and the bottom K1 element: 0.25°,
2.5° and 5°.
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1 LA-RAK : 2 rails : 2 K2-BAR
2 LA-RAK : 4 rails : 1 K2-BAR
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3.4 Elements for LA-RAK rigging

The K2-RACKMOUNT is designed to stack one or two LA-RAK on top of a flown array.
It is composed of four rails and a stabilizer.
The rails are screwed on the K2-BUMP. Their number and position depend on the number of racks.
The K2-RACKMOUNT must be used along with either one or two K2-BAR.
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When two racks are mounted side by side, the stabilizer is used to prevent the assembly from tipping or toppling over.
0° site angle
30° positive site angle
Refer to APPENDIX A: PICKUP POINTS GUIDELINES for more information.
The stabilizer traps one of the chains used to lift the assembly.
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Final check
After the setup, always verify no yellow labels are visible on the front and on both sides of the array.
K2 enclosures on K1-SB
Stack as many K1-SB enclosures as necessary.
Refer to the K1 rigging manual to set up the K1-SB part of the array.
Position and attach a K2-BUMP on the K1-SB stack
Refer to PROCEDURE H.
Position and attach an upside down K2 on the K2-BUMP and add as many K2
enclosures on top of the first one.
Refer to PROCEDURE C.
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4 SYSTEM SETUP

4.1 Ground-stacking

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4.2 Flying

Final check
After the setup, always verify no yellow labels are visible on the front and on both sides of the array.
At least one motor for each K2-BAR
When using two K2-BAR, do not implement a bridle between the bars.
Before setup, choose a flying option Refer to SOUNDVISION modeling and to 3.3 Elements for flying (p. 2).
K2 enclosures under K2-BUMP
Prepare all the blocks of 4 K2 necessary to build the array.
If a block is not already built, refer to PROCEDURE A.
Preset the inter-enclosures angles.
Refer to PROCEDURE B.
Place an open a K2-BUMPFLIGHT under the motor. If necessary, attach one or two K2-BAR to the K2-BUMP.
Refer to PROCEDURE D.
If necessary, stack one or two LA-RAK on the K2-BUMP.
Refer to PROCEDURE I. Refer to APPENDIX A: when stacking only one LA-RAK.
Attach the shackles.
Refer to SOUNDVISION for the number and position of the shackles.
Lift the assembly so you can position a block of four K2 under it. Attach the block of four K2 to the K2-BUMP
Refer to PROCEDURE E. Verify that the rear rigging arms are secured by pins and that no yellow
label is visible on the front.
Lift the assembly so you can position a block of four K2 under it.
Verify that no yellow label is visible on both sides of the array.
Attach the block of four K2 enclosures to the bottom of the array.
Refer to PROCEDURE F. Verify that the rigging arms at the back are secured by pins and that no
yellow label is visible on the front.
Repeat the last two steps until the array is complete. Raise the array to its final trim height. Adjust site and azimuth angles.
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Final check
After the setup, always verify no yellow labels are visible on the front and on both sides of the array.
When using two K2-BAR, do not implement a bridle between the bars. Always use at least two motors. Refer to APPENDIX A: PICKUP POINTS GUIDELINES.
Before setup, choose a flying option Refer to SOUNDVISION modeling and to 3.3 Elements for flying (p. 2).
K2 enclosures under K1-SB
K1-SB array setup
Refer to your SOUNDVISION model to define which flying frame to use.
If you are using the K1-BUMP:
Refer to the K1 rigging manual to set up the K1-SB part of the array.
Or if you are using the K2-BUMP:
Place an open a K2-BUMPFLIGHT under the motor. If necessary, attach one or two K2-BAR to the K2-BUMP.
Refer to PROCEDURE D.
If necessary, stack one or two LA-RAK on the K2-BUMP.
Refer to PROCEDURE I. Refer to APPENDIX A: when stacking only one LA-RAK.
Attach the shackles. Refer to SOUNDVISION for the number and position of the shackles. Lift the assembly so you can position a block of K1-SB under it. Attach the K1-SB block to the K2-BUMP.
Refer to PROCEDURE H.
Repeat the last two steps until the K1-SB array is complete.
K2 array setup
Prepare all the blocks of 4 K2 necessary to build the array
If a block is not built already, refer to PROCEDURE A.
Preset the inter-enclosures angles.
Refer to PROCEDURE B.
K1-SB and K2 arrays connection
Lift the K1-SB array so you can position a block of four K2 under it. Using two K2-LINK interfaces, attach the block of K2 under the K1-SB array.
Refer to PROCEDURE G. Verify that the rear rigging arms are secured by pins and that no yellow label is
visible on the front.
Lift the array so you can position a block of four K2 under it.
Verify that no yellow label is visible on both sides of the array.
Attach the block of four K2 to the bottom enclosure of the array.
Refer to PROCEDURE F. Verify that the rear rigging arms are secured by pins and that no yellow label is
visible on the front.
Repeat the last two steps until the array is complete. Raise the array to its final trim height. Adjust site and azimuth angles.
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RIGGING MANUAL
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