GEO T Series T4805 5° Tangent Array Module T2815 15° Tangent Array Module CD18 Directional Sub-bass User Manual
Page 2/63 INTRODUCTION GEO Technology is radically new thinking The GEO R&D Project has, to date, resulted in the following patent applications: • The GEO Hyperboloid Reflective Wavesource™ differs radically from the megaphone-variant type horns you know and love (or hate). “Tried and true” methods will produce entirely unexpected results. HRW technology produces precise and predictable results. • The Configurable Directivity Flange. A waveguide that allows the operator to alter its behaviour.
INTRODUCTION Page 3/63 TABLE OF CONTENTS 1 2 Introduction....................................................................................................................... 4 GEO T General Set-up Instructions .................................................................................. 6 2.1 Speaker Wiring .......................................................................................................... 6 2.2 Amplifier Selection...........................................................
Page 4/63 1 INTRODUCTION INTRODUCTION Thank you for selecting a NEXO GEO T Series Tangent Array .System This manual is intended to provide you with necessary and useful information about your GEO System, which includes the following products: 750 mm [29.53"] • T4805 5° Tangent Array Module. 4x 8” (20cm) Neodymium Hi-flux 16 Ohm LF Drivers (two forward-facing LF/MF, two rearfacing LF) and one 3” voice coil, 1.4” Throat Neodymium 16 Ohm HF Driver with a 5° Hyperboloid Reflective Wavesource™.
INTRODUCTION • • Page 5/63 GEO Array Flying System. A fully integrated and accurate flying system that provides safe, flexible and simple means of flying GEO Tangent Arrays. NOTE: GEO Tangent Arrays control the dispersion of acoustic energy with a high degree of precision. Inclinometers and laser aiming tools are essential to ensure proper audience coverage when installing a GEO Tangent Array. GEOSoft Array Design Software simplifies the design and implementation of vertical tangent GEO arrays.
Page 6/63 2 GEO T GENERAL SET-UP INSTRUCTIONS GEO T GENERAL SET-UP INSTRUCTIONS 2.1 Speaker Wiring 2.1.1 GEO T4805 & T2815 connectors GEO T’s are connected to power amplifiers via one AP6 Male Connector (GEOT-612M) on a link cable that is stowed in the rear vent port. One EP6 Female Chassis (GEOT-613F) on the back connector panel is used as output to feed the next GEO T. A wiring diagram is printed on the connection panel located on the back of each cabinet.
GEO T GENERAL SET-UP INSTRUCTIONS 2.1.2 Page 7/63 CD18 connectors The CD18 are connected to power amplifiers via NL4FC SPEAKON connectors (not supplied). A wiring diagram is printed on the connection panel located on the back of each cabinet. The in/out pins of the SPEAKON sockets are identified. The sockets are connected in parallel within the enclosures (see the Connections Diagrams section of this manual). Front Back NL4FC # 1- / 1+- 2.1.
Page 8/63 GEO T GENERAL SET-UP INSTRUCTIONS 2.2 Amplifier Selection NEXO recommends high power amplifiers in all cases. Budget constraints are the only reason to select lower power amplifiers. A lower power amplifier will not reduce the chances of driver damage due to over-excursion, and may actually increase the risk of thermal damage due to sustained clipping.
GEO T GENERAL SET-UP INSTRUCTIONS 2.3 Page 9/63 Current rating It is very important that the amplifier behaves correctly under low load conditions. A speaker system is reactive by nature: on transient signals like music it will require four to ten times more instantaneous current than its nominal impedance would indicate. Amplifiers are generally specified by continuous RMS power into resistive loads, however the only useful information about current capacity is the specification into a 2 Ohm load.
Page 10/63 2.4.2 GEO T GENERAL SET-UP INSTRUCTIONS Operating Mode Most two channel amplifiers available on the pro-audio market have the following operating modes: • Stereo: two fully independent channels deliver identical power into identical loads • NEXO recommends Stereo Mode for HF sections when paralleling 6 GEO T series modules (2 x 6 HF per amplifier), and for CD18 amplification. • Bridge-Mono: the second signal channel processes the same input as the first channel, but with reversed phase.
GEO T GENERAL SET-UP INSTRUCTIONS Page 11/63 • CD18 rear: 1 amplifier in stereo mode, 2 CD18 rear per amplifier channel, mode switch in Stereo position, Gain switch in 26 B gain position, all dynamic or filter processing switches off. • CD18 front: 1 amplifier in stereo mode, 2 CD18 front per amplifier channel, mode switch in Stereo position, Gain switch in 26 B gain position, all dynamic or filter processing switches off. Which gives a total of 7 identical amplifiers for such a cluster.
Page 12/63 3 GEO T RIGGING PROCEDURE GEO T RIGGING PROCEDURE Before proceeding with assembly of GEO T arrays, please ensure that the components are present and undamaged. A component list is appended to this manual. In the event of any shortage, please contact your supplier. For maximum efficiency the GEO T rigging system requires three experienced persons for set-up: typically one motor hoist operator, and one GEO T operator per side of the array.
GEO T RIGGING PROCEDURE 3.1.2 Page 13/63 • Ensure that motor hoists, hoist control systems and ancillary rigging components are currently certified as safe and that they pass a visual inspection prior to use. • Ensure that public and personnel are not allowed to pass beneath the system during the installation process. The work area should be isolated from public access. • Never leave the system unattended during the installation process.
Page 14/63 3.1.3 GEO T RIGGING PROCEDURE Contacts Correct training is fundamental to safe practise when working with loudspeakers flying systems. NEXO recommend that users contact local industry associations for information on specialist course.
GEO T RIGGING PROCEDURE Page 15/63 GEO T angle sequences follow logarithmic scales. Angle setting values are: • Bumper to GEO T4805 : 0° • GEO T4805 to GEO T4805: 0.125° - 0.20° - 0.315° - 0.50° - 0.80° - 1.25° - 2.0° - 3.15° - 5.0° • GEO T4805 to GEO T2815: 6.30° - 8.00° - 10.0° • GEO T2815 to GEO T2815: 6.30° - 8.00° - 10.0° - 12.5° - 15° The GEO T rigging system has two operating modes: • Tension mode: the force of gravity sets angles between upper and lower cabinets.
Page 16/63 GEO T RIGGING PROCEDURE To be lifted in tension mode, the GEO T bumper requires either: • one motor hoist and a bridle; • or two motor hoists (easier initial angle setting); In both cases, ensure that the motors are properly rated. IMPORTANT Motor hoists must be rated to support the entire cluster weight. For arrays of 6 to 18 cabinets, 1 tonne motor hoists are sufficient. Arrays of 18 cabinets and above should be supported with 2-tonne capacity motor hoists. 3.3.
GEO T RIGGING PROCEDURE Page 17/63 A BUMPER TO FIRST GEO T4805 ASSEMBLY 3.3.3 • Position the bumper on the first GEO T4805 so that the bumper side slot (A) is at the rear. • Link the GEO T4805 to the bumper using the four 12mm x 35mm push-pins provided with the bumper; check that all push-pins are in the locked position. • Link the motor hoists to the bumper using front and rear lifting points, and ensure that the bumper lifting pins properly locked with the “R” clips provided.
Page 18/63 GEO T RIGGING PROCEDURE “SAFETY PIN MUST BE FITTED“ HOLE GEO T4805: RIGGING PLATES IN TENSION MODE • Lift the bumper and the two first GEO T4805 to a height that allows convenient access to the linking bars and angle setting holes. • The top GEO T4805’s linking bars must be rotated downwards and into the lower GEO T4805’s side rigging plate (see drawing).
GEO T RIGGING PROCEDURE 3.3.4 Page 19/63 Subsequent GEO T4805’s • Repeat the above section steps, until you have positioned six GEO T4805’s. • Fix the speaker cable to the bumper, and connect it to the top GEO T4805. • Connect the five speaker links. • Check the six cabinets according to the Checklist procedure described in the following section IMPORTANT – Tension Mode DO NOT attempt to make any changes to the linking bars while the system is in tension or while it is being lifted or lowered.
Page 20/63 3.3.6 GEO T RIGGING PROCEDURE • Lift the bumper and GEO T4805 at a height that allows convenient access to the linking bars and angle setting holes. • Lift the rear of GEO T2815 and insert push-pins into the desired angle setting hole. The centre of gravity of the GEO T2815 is close to the pivot point and it is very easy to rotate the cabinet to the desired angle.
GEO T RIGGING PROCEDURE 3.3.8 Page 21/63 De-rigging and loading out Taking the system down is just a case of doing the reverse procedure to flying the array. However, there are some important factors to consider. 10 GEO T 4805 + 2 GEO T 2815 SET IN TENSION MODE • Lower the array until the bottom cabinet is just off the floor and close to horizontal position. • Link cables must be disconnected and stowed away in the recesses in the rear of each cabinet.
Page 22/63 3.4 GEO T RIGGING PROCEDURE • All other GEO T4805’s should have their linking bars returned to 0.125° position to ensure that the cabinets stay vertical when landing. • Position the flight case underneath the array and carefully lower the array into the flight case, taking care not to catch any parts in the case. • NB: When lowering the system into the flight case, alignment is easier if two operators lift the flight case onto the bottom of the system as it is lowered.
GEO T RIGGING PROCEDURE 3.4.1 Page 23/63 Kelping beam to bumper • Link the motor hoists to the Kelping Beam using the front upper axis (fixed beam) and rear upper axis (articulated beam), and ensure that these axes are properly locked with the “R” clips supplied. • Lift the Kelping Beam and position the bumper below it. • Lower the Kelping beam so that the front beam load pin holes are aligned with the bumper load pin holes (see drawing).
Page 24/63 3.4.2 GEO T RIGGING PROCEDURE Bumper to fist GEO T4805 assembly 4 push-pins (BLGEOT12-35, 12mm diameter x 35 mm length) connect the top GEO T4805 to the bumper. IMPORTANT These 4 push-pins are slightly longer than the ones used to connect GEO T’s (35mm length instead of 30mm). Never use the GEO T 12mm x 30mm push-pins to connect the top GEO T4805 to the bumper. A FIRST GEO T4805 TO BUMPER ASSEMBLY 3.4.
GEO T RIGGING PROCEDURE “SAFETY PIN MUST BE FITTED“ HOLE Page 25/63 GEO T4805: RIGGING PLATES IN COMPRESSION MODE IMPORTANT The push-pins for “SAFETY PIN MUST BE FITTED” holes must always be inserted first. • Insert two additional 12mm x 30mm push-pins in the front holes (see figure below). • Lift the bumper and two first GEO T4805 to a height that allows convenient access to the linking bars and the angle setting holes. • Release the linking bar push-pin from its storage position (typically 0.
Page 26/63 GEO T RIGGING PROCEDURE IMPORTANT DO NOT attempt to make any changes to the linking bars whilst the system is landed or being lifted or lowered. • 3.4.4 3.4.5 Subsequent GEO T4805’s • Repeat the above section steps, until six GEO T4805 are in place. As the assembly is lifted, angles between GEO T4805 cabinets will remain at 0° whatever the linking bar positions.
GEO T RIGGING PROCEDURE 3.4.7 Page 27/63 Applying compression • With the cluster raised 1 meter (~3feet) off the ground, lower the rear motor hoist only. The array will swing slowly forwards until the centre of gravity lies directly below the front motor hoist. Continue to lower the rear motor hoist and the rear articulated part of the Kelping Beam will swing downwards towards the cabinets. Stop the hoist when the rear arm of the Kelping Beam reaches an elevation of approximately –70 degrees.
Page 28/63 3.4.8 GEO T RIGGING PROCEDURE Positioning the cluster • Adjust the overall height and aiming angle of the array by adjusting the front and rear motor hoists accordingly. Note that the accuracy of the angle and height of the array are critical and the appropriate measurement tools are necessary to achieve this (see the appendix for a recommended list of installation tools). • Install a secondary safety steel between the Kelping Beam and a suitable point in the supporting structure.
GEO T RIGGING PROCEDURE Page 29/63 a cable should not be accidentally forgotten when the system is separated. Damage to the connector will occur should this mistake be made. 3.5 • In each group of 3 GEO T4805’s, the linking bar of the lowest GEO T4805 should be returned to the 5° position in order to sit flat in the flight case. • All other GEO T4805’s should have their linking bars returned to 0.125° position to ensure that the cabinets stay vertical when landing.
Page 30/63 GEO T RIGGING PROCEDURE To be lifted in “Compression mode – Half Kelping Beam”, the GEO T bumper requires either: • one motor hoist and a bridle; • or two motor hoists (easier initial angle setting); In both cases, ensure that the motors are properly rated. IMPORTANT Motor hoists must be rated to support the entire cluster weight. For arrays of 6 to 18 cabinets, 1 tonne motor hoists are sufficient. Arrays of 18 cabinets and above should be supported with 2-tons capacity motor hoists. 3.5.
GEO T RIGGING PROCEDURE Page 31/63 ATTACHING THE LEVA1500 CHAIN TO THE KELPING BEAM 3.5.2 Bumper to fist GEO T4805 assembly 4 push-pins (BLGEOT12-35, 12mm diameter x 35 mm length) connect the top GEO T4805 to the bumper. IMPORTANT These 4 push-pins are slightly longer than the ones used to connect GEO T’s (35mm length instead of 30mm). Never use the GEO T 12mm x 30mm push-pins to connect the top GEO T4805 to the bumper.
Page 32/63 3.5.3 GEO T RIGGING PROCEDURE First to second GEOT 4805 In “Compression Mode”, the linking bars must remain inside their respective cabinet side rigging plates. Angles between one cabinet and the one below are adjusted using the upper cabinet “compression mode setting” holes (see drawing below). • Lift the bumper and top GEO T4805 assembly and position the next GEO T4805 below the assembly.
GEO T RIGGING PROCEDURE Page 33/63 IMPORTANT DO NOT attempt to make any changes to the linking bars whilst the system is landed or being lifted or lowered. 3.5.4 3.5.5 Subsequent GEO T4805’s • Repeat the above section steps, until six GEO T4805 are in place. As the assembly is lifted, angles between GEO T4805 cabinets will remain at 0° whatever the linking bar positions.
Page 34/63 GEO T RIGGING PROCEDURE • Rotate the fingerwheel clockwise until the chain is taught. • Make a final check that the LEVA1500 chain is correctly installed and store the surplus chain in the chain bag supplied. The chain bag should be clipped to the Chain Lever Hoist. • Unse the LEVA1500 lever to apply the pull-up force to the bottom of the array. Notice that, as the LEVA1500 chain gets shorter, the cabinets in the array close together to the angles set by the linking bar adjustments.
GEO T RIGGING PROCEDURE 3.5.8 Page 35/63 Positioning the cluster • If one motor hoist only is used, the bridle chain length must be adjusted for the correct bumper angle prior to cluster lift. • Lift the GEO T array to the height determined in GeoSoft (GeoSoft array height definition is for the top surface of the topmost cabinet). • Adjust the bumper angle as determined in GeoSoft by lowering or lifting rear motor hoist (so that the front height does not change).
Page 36/63 3.6 GEO T RIGGING PROCEDURE • All other GEO T4805’s should have their linking bars returned to 0.125° position to ensure that the cabinets stay vertical when landing. • Position the flight case underneath the array and carefully lower the array into the flight case, taking care not to catch any parts in the case. • NB: When lowering the system into the flight case, alignment is easier if two operators lift the flight case onto the bottom of the system as it is lowered.
NEXO NX242 DIGITAL CONTROLLER FOR GEO T 4 Page 37/63 NEXO NX242 DIGITAL CONTROLLER FOR GEO T 4.1 NX242 Proprietary Functions The NX242 is much more than a “generic” Digital Signal Processor. It provides all the standard functions that you expect from this type of unit, but its real value is the interface between you and your speaker system.
Page 38/63 NEXO NX242 DIGITAL CONTROLLER FOR GEO T Each VCEQ and VCA is controlled via synthesis of several signals from the various detection sections. That synthesis is in fact the envelope of those signals, with an optimised release and attack time for each VCEQ and VCA (depending on its frequency range and the cabinet selected). Displacement Control The Sense input signal is sent to a shaping filter producing a signal whose instantaneous amplitude is proportional to the voice coil excursion.
OUTPUT CHANNEL 4 NEXO NX242 DIGITAL CONTROLLER FOR GEO T Other “loudspeaker management” DSP devices do not provide the algorithms that the NX242 uses to optimise the cardioid operation of the GEO T4805, CD18 and CD12. GEO T2815 low frequency directional behaviour is achieved by using rear radiating acoustic resistor. These are designed so that LF dispersion is cardioid. Maximum attenuation is achieved at 180°, average rear to front attenuation is more than 12 dB.
Page 40/63 4.3.3 NEXO NX242 DIGITAL CONTROLLER FOR GEO T CD18 Hardware configuration • Input (L, R or L+R) can be selected in MENU 3.
NEXO NX242 DIGITAL CONTROLLER FOR GEO T Page 41/63 Please refer to the chapter in the NX242 User Manual on setting delay for proper time alignment between GEO T Series and CD18. 4.4.6 Reversed Cardioid Pattern Polarity checks are often performed while the system is being set up. Keep in mind that cardioid speakers may also require a coverage test. If you invert two outputs of the NX242, you could have the main lobe inverted and firing to the rear.
Page 42/63 NEXO NX242 DIGITAL CONTROLLER FOR GEO T 750 mm [29.53"] 750 mm [29.53"] 750 mm [29.53"] r2 750 mm [29.53"] 750 mm [29.53"] 750 mm [29.53"] r1 1200 mm [47.24"] 1200 mm [47.24"] 1200 mm [47.24"] Stacked CD18s If the CD18s are stacked on the ground, delay will have to be adjusted on the CD18 NX242 TDcontrollers according to the distance difference r1–r2 (see figure below). r1 750 mm [29.53"] 750 mm [29.53"] r2 750 mm [29.53"] 750 mm [29.53"] 750 mm [29.53"] 750 mm [29.
NEXO NX242 DIGITAL CONTROLLER FOR GEO T Page 43/63 • Should you want to restrict the bandwidth with a low pass filter, you can introduce a phase difference of up to 180° (completely out of phase) at the cross over point. • If the signal is passing though any digital equipment you are adding between 1.4ms and 2.2ms (around 70° phase shift at 100Hz) due solely to the converter delay! The additional delay due to the processing itself (look ahead compressor, delay…) can be quite important as well.
Page 44/63 5 GEO T TANGENT ARRAY SYSTEM CHECK LIST GEO T TANGENT ARRAY SYSTEM CHECK LIST It is essential to execute all these check steps prior to perform a sound check on the “front end” to the system. Following this checklist step by step will prevent many troubles and will save time in the end. 5.1 Are the NX242 Digital TDcontrollers properly configured? IMPORTANT If you must change any of the parameters listed above, make sure that you use the same values on all NX242’s. 5.1.1 NX242 Load 2.
GEO T TANGENT ARRAY SYSTEM CHECK LIST 5.4 5.5 Page 45/63 Are the speakers properly connected and angled ? • Attach the first 6 array modules to the bumper. • Before flying, verify that all channels of all modules are functioning properly. • Make sure that each module is producing the proper front/rear summation: when listening from behind the array, switch the front drivers in and out.
Page 46/63 6 TECHNICAL SPECIFICATIONS TECHNICAL SPECIFICATIONS 6.1 GEO T4805 Vertical Tangent Array Module 6.1.1 System specifications PRODUCT FEATURES Components GEO T4805 Height x Width x Depth HF: 1 x 3” voice coil, 1.4” throat neodymium 16 Ohm driver on an hyperboloid reflective wavesource. MF/LF (front-firing): 2 x 8” (20cm) long excursion neodymium hi-flux 16 Ohm drivers in series. LF (rear-firing): 2 x 8” (20cm) long excursion neodymium hi-flux 16 Ohm drivers in series.
TECHNICAL SPECIFICATIONS 6.1.2 Page 47/63 GEO T4805 Dimensions 903 mm [35.55"] 286 mm [11.26"] 250 mm [9.84"] 750 mm [29.53"] 627 mm [24.68"] 6.1.3 Architects’ & Engineers’ Specifications The 3-way full range tangent array module shall have four 8 inch 16 Ohm long excursion neodymium hiflux cone transducers in series (two front-firing, two rear-firing), and a 1.4 inch exit 16 Ohm neodymium compression driver on a hyperboloid reflective wavesource.
Page 48/63 6.2 TECHNICAL SPECIFICATIONS GEO T2815 Vertical Tangent Array Module 6.2.1 System specifications PRODUCT FEATURES Components GEO T2815 Height x Width x Depth HF: 1 x 3” voice coil, 1.4” throat neodymium 16 Ohm driver on an hyperboloid reflective wavesource. MF/LF: 2 x 8” (20cm) long excursion neodymium hi-flux 16 Ohm drivers in series. Rear Passive Acoustic Resistor 249 x 903 x 537 mm (9 13/16” x 35 1/2” x 21 1/8”) including array assembly system Shape 15° Trapezoid.
TECHNICAL SPECIFICATIONS 6.2.2 Page 49/63 GEO T2815 Dimensions 903 mm [35.55"] 249 mm [9.80"] 213 mm [8.39"] 750 mm [29.53"] 537 mm [21.14"] 6.2.3 Architects’ & Engineers’ Specifications The 2-way full range tangent array module shall have two 8 inch 16 Ohm long excursion neodymium hiflux cone transducers in series, two rear passive acoustic resistors and a 1.4 inch exit 16 Ohm neodymium compression driver on a hyperboloid reflective wavesource.
Page 50/63 6.3 TECHNICAL SPECIFICATIONS CD18 Directional Sub-Bass 6.3.1 System specifications PRODUCT FEATURES CD18 Components 2 x 18” (46cm) long excursion neodymium 8 Ohm drivers Height x Width x Depth 750 x 1200 x 750 mm (29 1/2” x 47 1/4” x 29 1/2”) Shape Rectangular Weight: Net 116 kg (256 lbs) Connectors 2 x NL4MP SPEAKON 4 pole (In & Through) Construction Baltic birch ply finish with structured black coating. Dark grey carpet finish also available.
TECHNICAL SPECIFICATIONS 6.3.2 Page 51/63 CD18 dimensions 750 mm [29.53"] 750 mm [29.53"] 750 mm [29.53"] 750 mm [29.53"] 1200 mm [47.24"] 1200 mm [47.24"] 6.3.3 Architects’ & Engineers’ Specifications The subbass loudspeaker system shall have two 18 inch long excursion 8 Ohm cone transducers. Its horizontal and vertical dispersion shall be 120° (cardioid pattern). The system shall have a Q of 4.3 (cardioid mode) over is entire operating frequency range.
Page 52/63 TECHNICAL SPECIFICATIONS 6.4 GEO T Rigging system 6.4.1 GEO T Bumper 911 mm [35.87"] 310 mm [12.20"] 839 mm [33.03"] 658 mm [25.91"] WEIGHT : 45 KG / 99.2 LBS 6.4.2 GEO T Kelping Beam 1850 mm 1247 mm [72.83"] [49.09"] 1075 mm [42.32"] 850 mm [33.46"] 418 mm 405 mm [16.46"] [15.94"] WEIGHT : 53 KG / 116.
TECHNICAL SPECIFICATIONS Page 53/63 836.5 mm [32.93"] 6.4.3 GEO T Bottom Bumper 35 mm [1.38"] 836.5 mm [32.93"] 35 mm [1.38"] 474 mm [18.66"] WEIGHT: 9.5 KG / 20.9 LBS 474 mm [18.
Page 54/63 6.5 6.5.1 TECHNICAL SPECIFICATIONS NX242 TDcontroller Specifications SPECIFICATIONS NX242 Digital TDcontroller Output Level +28 dBu Max. into 600 Ohm load Dynamic Range Channels 1 & 2 = 99 dBu Channel 3 & 4 = typical 107 dBu. (Flat without gain scaling: 101dBu) THD + Noise < 0.02% flat setup (max0.04% for Output 27.5dBu) Latency time 1.
8 SENSE 4 7 SENSE 3 6 SENSE 2 5 SENSE 1 INPUT L AD AD AD AD 0 AMP POWER Signal EQ EQ AMP POWER Signal AMP POWER Signal Signal AMP POWER AMP VOLTAGE AMP GAIN FALLBACK AMP VOLTAGE AMP GAIN FALLBACK AMP VOLTAGE AMP GAIN FALLBACK AMP VOLTAGE AMP GAIN FALLBACK INPUT VU-METER AD INPUT VU-METER 0 ChassisTemp. Voice Coil Temp. Command displacement ChassisTemp. Voice Coil Temp. Command ChassisTemp. Voice Coil Temp.
Page 56/63 7 7.
CONNECTION DIAGRAMS 7.
Page 58/63 8 8.1 GEO T SERIES PARTS & ACCESSORIES LIST GEO T SERIES PARTS & ACCESSORIES LIST Array Modules & Control Electronics List MODEL DRAWING GEO T4805 8.
GEO T SERIES PARTS & ACCESSORIES LIST MODEL DRAWING DESCRIPTION LEVA1500 Chain Lever Hoist 1.
Page 60/63 9 RECOMMENDED INSTALLATION TOOLS AND EQUIPMENT RECOMMENDED INSTALLATION TOOLS AND EQUIPMENT • Tape measure – should be 30m/100ft in length and be of durable fibre material. Have one per array available to speed up the installation process. • Laser inclinometer – For measuring vertical and horizontal angles in the venue. An ideal product is the Calpac ‘Laser projecting a dot’ version which costs approximately €60.
USER NOTES 10 USER NOTES Page 61/63
France Nexo S.A. 154 allée des Erables ZAC des PARIS NORD II B.P. 50107 F-95950 Roissy CDG Cedex Tel: +33 1 48 63 19 14 Fax: +33 1 48 63 24 61 E-mail: info@nexo.fr www.nexo-sa.
