Alcons LR18i Manuale utente
Rigging manual LR18i Rev. 1.1
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Table of contents _______________________________________________
1 Introduction______________________________________________________________________________________ 3
2 Important safety instructions and precautions _________________________________________________________ 4
3 Installation ______________________________________________________________________________________ 5
4 Rigging components ______________________________________________________________________________ 6
5 Array configurations ______________________________________________________________________________ 9
6 Service and support ______________________________________________________________________________ 16
7 CE declaration of conformity_______________________________________________________________________ 17
Rigging manual LR18i Rev. 1.1
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1. Introduction__________________________________________________
Dear customer,
Congratulations on your purchase of an Alcons Audio LR18i line array loudspeaker and thank you for your confidence in Alcons products. We are very honoured
to welcome you to the growing family of Alcons ambassadors!
For your safety, please read the important safety instructions and the precautions section before rigging a loudspeaker array.
General features
The LR18i has the following features:
A unique seamless arrayability up to/beyond 20kHz.
Symmetrical 90° or 120° dispersion in the non-coupling plane.
High-performance line-array system for even demanding applications.
Non-compressed 1:1 HiFi-quality sound reproduction.
Intuitive predictable linear response behavior and identical tonal balance at any SPL.
7” pro-ribbon HF section with exceptional intelligibility and “throw”.
Maximum dynamic headroom reserve with up to 90% less distortion.
Fully coherent and symmetric pattern control in horizontal and vertical plane.
SIS™ pre-wired for very high system damping and further reduced distortion.
All Neodymium drivers for excellent performance-to-weight ratio.
LR18i rigging features
The trapezoidal cabinet is fitted with integrated mounting hardware, enabling angle-setting on the cabinets during installation. The rigging system is intended for
fixed installation use and has a max. working load limit of 24x LR18i cabinets under 10:1 safety (with GRD18(B).
Manual
This manual is written in a compact and easy readable way. You can contact Alcons Audio for more in-depth information on different items or situations
Rigging manual LR18i Rev. 1.1
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2. Important safety instructions and precautions _____________________
Read this manual
1. Follow all safety instructions as well as the warning messages.
2. Never incorporate equipment or accessories not approved by Alcons Audio.
3. Read all the related product information before using the system.
4. Work with qualified personnel for rigging the system.
5. Installation should only be carried out by qualified personnel who are familiar with the rigging techniques and safety recommendations stated in this
manual.
6. Ensure health and safety during installation and setup.
7. All persons must wear protective headgear and footwear at all times. Under no circumstances personnel is allowed to climb into a loudspeaker assembly.
8. Respect the Working Load Limit (WLL) of third party equipment.
9. Alcons Audio 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.
10. Respect the maximum configurations and the recommended safety level.
11. 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 Alcons Audio.
12. Be cautious when flying a loudspeaker array. Always verify that no one is standing underneath the loudspeaker array when it is being raised or lowered.
As the array is being raised, check each individual element to make sure that it is securely fastened to the adjacent element.
13. Never leave the array unattended during the installation process. As a general rule Alcons Audio recommends the use of safety slings at all times.
14. Ensure that the surface is suitable for ground-stacking a loudspeaker array.
15. 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, Alcons Audio recommends the use of safety straps at all times.
The exclamation point within a triangle is intended to alert the user to the presence of important operating
instructions in the literature accompanying the product.
Rigging manual LR18i Rev. 1.1
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3. Installation___________________________________________________
Unpacking
Carefully open the shipping carton and inspect all the parts. Every Alcons product is thoroughly tested and inspected before leaving the factory and should arrive
in perfect condition. If you find any damage, notify the shipping company immediately. Only you, the consignee, may initiate a claim for shipping damage. Be
sure to save all packing materials for the carrier’s inspection.
Rigging manual LR18i Rev. 1.1
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4. Rigging components __________________________________________
LR18 loudspeaker
1) LR18i cabinet LR18i cabinet
2) Front coupler front couplers with nut and bolt connection
3) Signal input/ link Input/ link for the audio signal
4) Angle frame frame supports features for the angle setting and coupling
5) Angle bar bar with holes for angle setting and coupling
1
2
3
4
5
Rigging manual LR18i Rev. 1.1
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4. Rigging components __________________________________________
GRD18i
The GRD18i enables the LR18i line-array modules to be flown and ground
stacked. The grid can be suspended from multiple hoist positions on top of the grid
or by means of a central “single pick-point” for smaller arrays; all points
11mm/0.44-in for 0,75T shackles.
The GRD18i is certified for a safety-rating of 10:1, for twelve (12) cabinets LR18i
GRD18
The GRD18 enables the LR18i line-array modules to be flown and ground stacked.
The grid can be suspended from multiple hoist positions on top of the grid or by
means of a central “single pick-point” for smaller arrays; all points 14mm/0.55-in for
1,5T shackles. It has a mounting position and through hole for the Teqsas laser/
inclinometer.
The GRD18 is certified for a safety-rating of 10:1, for twenty-four (24) cabinets
LR18i.
Rigging manual LR18i Rev. 1.1
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4. Rigging components __________________________________________
GRD18B
The GRD18B enables the LR18i line-array modules and LR18B
line-array bass modules to be flown and ground stacked. The grid can
be suspended from multiple hoist options on top of the grid or with the
central “single pick-point” bar for smaller arrays (all points 14mm/0.55-
in for 1,5T shackles).The GRD18B has a weight of 26 kg / 57 lb and is
certified for a safety-rating of 10:1, for 24 cabinets LR18i, 12 cabinets
LR18B * on the hoist positions on top of the grid.
* (or equivalent weight in mixed configurations)
GRD18EXTBR
This is a “sliding” extension bar, which can be attached on top of the GRD18, to extend the
leverage capabilities of the GRD18, with larger centre-of-gravity (COG) array off-sets.
With the GRD18EXTBR mounted at the front side of the GRD18, the upward array tilt is
extended; With the GRD18EXTBR mounted at the rear side of the GRD18, the downward
array tilt is extended. The front and rear holes measure 14mm/0.55-in to facilitate 1,5T
shackles. Always use both quick release pins for the GRD18/ GRD18EXTBR connection.
Rigging manual LR18i Rev. 1.1
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5. Array configurations___________________________________________
Cabinet connections LR18i
There are 10 user selectable logarithmic angles, which can be determined by the
Alcons Ribbon Calculator™ simulation program. The angle lay-out is pictured on
the right. To set a desired angle, two holes in the angle bar need to be positioned
between the marked holes A,B on one cabinet and C,D and E on the adjacent
cabinet.
The picture below shows the front coupling with locating bolts.
It is important to mention that the angle setting on the desired cabinet is done at
the previous cabinet.
Rigging manual LR18i Rev. 1.1
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5. Array configurations___________________________________________
GRD18i options
The GRD18i is used with 1-12 LR18i arrays and has multiple
mounting options. The picture on the right shows the different
pick-points for flying an array. The A1 & A2 marked points are the
default hoist points.
It is possible to use one pick point from the A1 linear pattern. Use
one pick point only for max. 6x LR18i cabinets
When hanging a 6-12 LR18i array with 2 hoist points, ensure that
the Centre of Gravity is evenly spaced between the two A1 pick
points.
In case of a permanent installation, combine an A1 point and 2x
A2 for a stable 3-point hang. Use 0,75T shackles at all times
Hole A4 can be used for a cable sling attachment, or an extra
safety steel to the bottom cabinet of the array.
The 2 holes A5 will hold the connection bolt between the LR18i
angle arm and GRD18i.
Picture of the GRD18i sticker situated at the A5 marked area.
The -2.7° hole is only used when stacking an LR18i array.
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