2.1.3 Configuring GEO S12 for passive or active mode ....................9 ................................... 10 ABLING GEO S12 & LS18 ..................10 RECOMMENDED AMPLIFICATION GEO S12 & LS18 NEXO TD C ................10 SETUPS ON ONTROLLERS CONNECTION DIAGRAMS ........................11 GEO S12 ( ) / NXAMP4 2 (B ) ..............
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CONTENTS 6.4.6 Two GEO S12 vertically ..............................47 6.4.7 Two or more GEO S12 flown horizontally ......................48 6.4.8 LS18 and three or more GEO S12 flown vertically ..................... 51 6.4.9 Ground stacked LS18 and GEO S12 ........................... 55 ....................60 ESTING AND AINTENANCE OF THE SYSTEM SYSTEM CHECK ALIGNMENT GUIDELINES ..................
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A comprehensive understanding of GEO theory, tangent arrays, and specific features of the GEO S Series will help you to operate your system at its full potential.
User Manual. Failure to do this exposes people to potential injury or death. Please check the web site nexo-sa.com for the latest update. Always consult qualified NEXO personnel if the device installation requires construction work and make sure to observe the following precautions: Mounting precautions choose mounting hardware and an installation location that can support 4 times the weight of the speaker system;...
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PLEASE READ CAREFULLY BEFORE PROCEEDING HIGH SOUND PRESSURE LEVELS Exposure to extremely high noise levels may cause permanent hearing loss. Individuals vary considerably in susceptibility to noise-induced hearing loss but nearly everyone will lose some hearing if exposed to sufficiently intense noise for a sufficient period of time. The U.S. Government’s Occupational and Health Administration (OSHA) has specified the following permissible noise level exposures: Sound Duration Per Day In Hours Sound Level dBA, Slow Response...
INTRODUCTION NTRODUCTION Thank you for selecting a NEXO GEO S12 Series Tangent Array System. This manual is intended to provide you with necessary and useful information about your GEO S12 & LS18 System, which includes the following products: • GEO S1210 is a 10° Tangent Array Module. It comprises 1x12” (30cm) 16 ohms Neodymium LF/MF driver loaded by a Phase Directivity Device ) and 1x1.4”...
GEO S12 GENERAL SET-UP INSTRUCTIONS GEO S12 G ENERAL NSTRUCTIONS GEO S12 and LS18 connections GEO S12 and LS18 are connected with Speakon NL4FC plugs (not supplied). A wiring diagram is printed on the connection panel located on the back of each cabinet. The 4 pins of the Speakon sockets identified in / out are connected in parallel within the enclosure.
GEO S12 GENERAL SET-UP INSTRUCTIONS 2.1.3 Configuring GEO S12 for passive or active mode Remove the six TORX screws that hold the connector panel. Remove the connector panel so that filter WAGO connectors become accessible. GEOS12 connector panel GEOS12 WAGO connectors In Passive Mode, connector A (from filter) should be inserted in connector B (PCB “Passive In”), and connector D (“Passive Out”) should be connected to speakers via connector C.
GEO S12 GENERAL SET-UP INSTRUCTIONS Cabling NEXO recommends the exclusive use of multi-conductor cables to connect the system: the cable kit is compatible with all the cabinets, and there is no possible confusion between LF, MF and HF sections. Cable choice consists mainly of selecting cables of the correct sectional dimension (size) in relation to the load resistance and the cable length.
GEO S12 and LS18 Structural Analysis Report is currently being certified by German Certification Organization RWTUV systems GmbH. NS-1 installation package includes all NEXO User Manuals, Structural Analysis Reports and Certificates PDF files. NS-1 is a freeware available on nexo-sa.com...
CONFIGURABLE DIRECTIVITY DEVICE ONFIGURABLE IRECTIVITY EVICE The GEO Wavesource controls dispersion of acoustic energy using a hyperboloid acoustical reflector in the “coupling plane” (the vertical plane of a curved vertical tangent array) and a diffraction slot in the “non-coupling plane” (the horizontal plane of a curved vertical tangent array).
CONFIGURABLE DIRECTIVITY DEVICE When & where to use Configurable Directivity flanges The diagrams show audience area coverage for a stereo system. While the GEO cluster will deliver even SPL from the front to the rear of this audience area, there are “holes” near the front in the centre and at the outside edges. We cannot fill the outside coverage gaps without enlarging the centre gap, and vice versa (left figure below).
Safety first GEO S12 & LS18 Rigging System structural computations and related documents are available in NS-1 or at NEXO (info@nexo.fr) upon request. We include this section to remind you of safe practice when flying the GEO S12 & LS18 system. Please read it carefully.
For fixed installations, wind loading has to be taken into account in accordance to the national standards. The GEO S12 & LS18 Rigging System requires regular inspection and testing by a competent test centre. NEXO recommend that the system is load tested and certified annually or more frequently if local regulations require.
- “Right” means HF waveguide is right as seen from front GEO S12 can be connected to bumpers “Left” or “Right” by simply flipping the cabinets. Whenever possible, NEXO recommends symmetrical designs (preferably HF waveguide inwards in stereo configurations) GEO S12 “Left”...
Never use other accessories – including push-pins - when assembling GEO S12 and/or LS18 cabinets than the ones provided by NEXO: NEXO will decline responsibility over the entire GEO S12 and LS18 accessory range if any component is purchased from different supplier.
LOCTITE 243 or equivalent for all screws used with GEO S12 & LS18 fixed installation accessories. LOCTITE 243 is available at NEXO or at your local distributor upon request. Page 28 / 95 System Manual GEOS12 LS18...
GEO S12 HARDWARE SETUP PROCEDURE 6.3.2 Single GEO S12 rigidly mounted on a wall or a ceiling (vertical or horizontal) Required items 1 x VNI-UBRK12 (allows all angles to be implemented) 4 x 12mm diameter screws (not provided) IMPORTANT Ensure that the surface – wall or ceiling – is strong enough to hold 4 times GEO S12 weight and that the four screws 12mm diameter and corresponding plugs required to fix the “U”...
GEO S12 HARDWARE SETUP PROCEDURE 6.3.3 Single GEO S12 cable mounted on a ceiling (vertical or horizontal) Required items 1 or 2 x VNI-LBRK (allows cable suspension, holes for cable suspension are 10mm diameter) 2 or 4 slings and corresponding shackles (not provided) IMPORTANT Ensure that the ceiling is strong enough to hold 4 times GEO S12 weight and that the cable suspension system required to install the cabinet under the ceiling is properly dimensioned.
GEO S12 HARDWARE SETUP PROCEDURE 6.3.4 GEO S12 vertical array rigidly mounted on a ceiling Required items 1 x GPI-BUMPER (allows +/-5° bumper tilt when installed below a flat surface; if higher bumper tilt is required, surface will have to be defined accordingly) (N-1) x GPI-ANPL for a N x GEO S12 array (ANPL1 ranges from 0.2°...
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GEO S12 HARDWARE SETUP PROCEDURE Use thread lock coated screws (or if not apply Loctite 243 or equivalent to four shoulder screws) from the last GPI-ANPL Position the GPI-BUMPER bumper to required angle position and use the four shoulder screws to connect it the bumper to the top cabinet Flip GEO S12 cluster by 90°...
GEO S12 HARDWARE SETUP PROCEDURE 6.3.5 LS18 and GEO S12 vertical array rigidly mounted on a ceiling Required items 1 x GPI-BUMPER (allows +/-5° bumper tilt when installed below a flat surface; if higher bumper tilt is required, surface will have to be defined accordingly) (M-1) x GPI-ANPL1 for M x LS18 M x LSI-CPLA counter-plates for M x LS18...
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GEO S12 HARDWARE SETUP PROCEDURE Position angle plates and top counter-plates from GPI-ANPL to required GEO S12 inter-cabinet angle value between GEO S12 upper sides according to figure below right Use thread lock coated screws (if not apply Loctite 243 or equivalent to shoulder screws) from LSI-CPLA and GPI-ANPL kits Screw all shoulder screws so that all plates and cabinets are tightened together Flip the cluster upside down to access connector plates located on the down side...
GEO S12 HARDWARE SETUP PROCEDURE 6.3.6 LS18 and GEO S12 vertical array cable mounted on a ceiling Required items As in 2 sections above, plus 2 x VNI-LBRK (allows cable suspension for bumper, holes for cable suspension are 10mm diameter) 4 x slings and shackles (not provided) IMPORTANT Ensure that the ceiling is strong enough to hold 4 times LS18 and GEO S12 cluster weight and that the...
GEO S12 HARDWARE SETUP PROCEDURE 6.3.7 GEO S12 horizontal array rigidly mounted on a ceiling Required items 2 x VNI-ABRK (allows rigid ceiling suspension for horizontal arrays) (N-1) x GPI-ANPL for a N x GEO S12 array (ANPL1 ranges from 0.2° to 3.15°, ANPL2 ranges from 5° to 10°, ANPL3 ranges from 16°...
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GEO S12 HARDWARE SETUP PROCEDURE Position the two “U” brackets from VNI-ABRK kits on the outer cabinets next the angle plates, and tight them to the cabinets using the shoulder screws provided with these kits (using Loctite 243 or equivalent) Four screws 12mm diameter (not provided) are required to secure the “U”...
GEO S12 HARDWARE SETUP PROCEDURE 6.3.8 GEO S12 horizontal array cable mounted on a ceiling Required items 2 x VNI-ABRK (allows cable suspension for horizontal arrays, holes for cable suspension are 10mm diameter) (N-1) x GPI-ANPL for a N x GEO S12 array (ANPL1 ranges from 0.2° to 3.15°, ANPL2 ranges from 5° to 10°, ANPL3 ranges from 16°...
Ensure that public is not allowed within a safety area which radius is equal or higher than assembly height. IMPORTANT NEXO PLSTD pole stand only should be used for mounting on top of NEXO LS18 LS18 must always be installed on a horizontal surface...
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GEO S12 HARDWARE SETUP PROCEDURE Lift assembly on speaker stand or on LS18 with VXT-PLSTD pole stand Page 41 / 95 System Manual GEOS12 LS18...
GEO S12 HARDWARE SETUP PROCEDURE 6.4.3 Single GEO S12 flown vertically Required items 1 x Flying Bar for single vertical GEO S12 (VNT-TTC) 1 x Lifting Ring (VNT-XHBRK) Or 1 x Truss hook (VNT-TCBRK) IMPORTANT Ensure that truss suspension point is strong enough to hold GEO S12 weight. Procedure Slide flying bar VNT-TTC into GEO S12 connecting plate oblong holes Lock safety pin into GEO S12 connecting plate...
GEO S12 HARDWARE SETUP PROCEDURE 6.4.4 Single GEO S12 flown horizontally Required items 1 x “U” Bracket for single horizontal GEO S12 (GPT-SSBRK) 1 x Lifting Ring (VNT-XHBRK) Or 1 x Truss hook (VNT-TCBRK) IMPORTANT Ensure that suspension point is strong enough to hold GEO S12 weight Procedure Slide GPT-SSBRK side plates into GEO S12 connecting plate oblong holes Lock safety pins into GEO S12 connecting plate...
GEO S12 HARDWARE SETUP PROCEDURE 6.4.5 Two GEO S12 on wind-up stand Required items 1 x “U” Bracket for two GEO S12 (GPT-PSBRK) Wind Up stand diameter 35mm (Eurotruss ES160 or equivalent) IMPORTANT Wind Up stand must be rated for assembly weight (80kg rated load min). Wind Up stand must always be installed on a horizontal surface.
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GEO S12 HARDWARE SETUP PROCEDURE Alternative Procedure (“Walder” procedure) Below described procedure required 2 additional 8x20 quick release pins (VXT-BL820) Split the GPT-PSBRK side plates by removing screws and bolt Slide GPT-PSBRK lower half-plates into lower GEO S12 connecting plate oblong holes Lock safety pins into lower GEO S12 connecting plate Position “U”...
GEO S12 HARDWARE SETUP PROCEDURE 6.4.6 Two GEO S12 vertically Required items 1 x “U” Bracket for two GEO S12s (GPT-PSBRK) 1 x Lifting Ring (VNT-XHBRK) Or 1 x Truss hook (VNT-TCBRK) IMPORTANT Ensure that suspension point is strong enough to hold two GEO S12s weight. Procedure Slide GPT-PSBRK side plates into GEO S12s connecting plate oblong holes Lock safety pins into GEO S12s connecting plate...
- “Down” means NEXO logo on front grid is at the bottom GEO S12 can be connected “Up” or “Down” by simply flipping the cabinets. Whenever possible, NEXO recommends symmetrical designs (ie NEXO logo in the same position on Left and Right clusters for stereo designs)
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GEO S12 HARDWARE SETUP PROCEDURE Connect second GEO S12 with X-Bow front articulation holes and rear link bars and ensure quick release pins are properly locked Repeat above steps for subsequent GEO S12’s IMPORTANT Ensure angle settings are identical on upper and lower side of the cabinets Ensure that safety pins are properly locked into GEO S12s connecting panels.
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GEO S12 HARDWARE SETUP PROCEDURE Lift and position assembly, connect lifting rings to suspension points with sling and shackle Secure assembly with secondary safety steel IMPORTANT The requirements for secondary safety systems vary with territories. However, the secondary safety steel MUST have a SWL equivalent or greater than that of the rigging system.
GEO S12 HARDWARE SETUP PROCEDURE 6.4.8 LS18 and three or more GEO S12 flown vertically Required items 1 x Bumper (GPT-BUMPER) M x pairs of LS rigging plates (LST-XBOW) for M x LS18 cabinets N x Pair of Rigging Plates (GPT-XBOW) for N GEO S12 cabinets 4 x (N+M) Quick release pins (VXT-BL820) for (N+M) cabinets 1 hoist (not provided) IMPORTANT...
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GEO S12 HARDWARE SETUP PROCEDURE Insert GPT-XBOW into connecting plates of both sides of GEO S12s GEO S12 XBOW ANGLE SETTINGS PLATE Lock safety pins into LS18 and GEO S12s connecting plate IMPORTANT Ensure that safety pins are properly locked into LS18s and GEO S12s connecting panels. Connect bumper to first LS18 or GEO S12 using “lift”...
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GEO S12 HARDWARE SETUP PROCEDURE Repeat above steps for subsequent cabinets IMPORTANT Ensure angle settings are identical on both sides of the cabinets. Ensure that safety pins are properly locked into LS18s and GEO S12s connecting panels. Ensure that all quick release pins are properly locked into their position. Lift cluster to NS-1 defined rigging height, secure cluster horizontally to prevent it from rotating Secure bumper with secondary safety steel IMPORTANT...
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GEO S12 HARDWARE SETUP PROCEDURE Optional GPT-TLB link bar for GPT- XBOW GPT-XBOWs are delivered with standard link bars which allow both stacked and flown setups. However, these link bars require perfect alignment of angle setting holes when adding cabinets. GPT-XBOW standard link bar To facilitate flying operation, an optional link bar with oblong holes (GPT-TLB, pair of link bars provided with two 8x20 quick release pin) is available in the GEO S12 accessory range.
GEO S12 HARDWARE SETUP PROCEDURE 6.4.9 Ground stacked LS18 and GEO S12 Required items M x pairs of LS rigging plates (LST-XBOW) for M x LS18 cabinets N x Pair of Rigging Plates (GPT-XBOW) for N GEO S12 cabinets 1 x ground stack device (GPT-GSTK) 4 x N Quick release pins (VXT-BL820) for N cabinets IMPORTANT Ground stack device GPT-GSTK is rated for a maximum of:...
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GEO S12 HARDWARE SETUP PROCEDURE Connect the reinforcement bar to the supporting beams according to required tilt angle configuration using 2 axis per side; secure the axis with provided “R” clips Insert GPT-XBOW into connecting plates of both sides GEO S12s Insert LST-XBOW into connecting plates of LS18s Lock safety pins into LS18s and GEO S12s connecting plate IMPORTANT...
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GEO S12 HARDWARE SETUP PROCEDURE Connect bottom LS18 or GEO S12 to GPT-GSTK Ground stacking device with 4 VXT-BL820 quick release pins Connect second LS18 or Geo S12 with X-Bow front articulation holes and rear link bars and ensure quick release pins are properly locked Repeat above steps for subsequent cabinets Once the assembly is completed, rotate rear or front GEO S12 ground stack device adjustable legs to definitive tilt angle,...
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GEO S12 HARDWARE SETUP PROCEDURE Optional GPT-TLB link bar for GPT- XBOW GPT-XBOWs are delivered with standard link bars which allow both stacked and flown setups. However, these link bars require perfect alignment of angle setting holes when adding cabinets. GPT-XBOW standard link bar To facilitate stacking operation, an optional link bar with oblong holes (GPT-TLB, pair of link bars provided with two 8x20 quick release pin) is available in the GEO S12 accessory range.
After cleaning, the rigging system must be treated with a suitable lubricant to prevent rusting. NEXO recommends the use of Scottoil FS365 which is a water-based lubricant with a mixture of machine oil, surfactant and anti-rust treatment.
SYSTEM CHECK ALIGNMENT GUIDELINES The NEXO TD Controllers factory delay presets are optimised to provide the best possible crossover between the GEO S12 and LS18 systems. The reference point for this adjustment is the front of each cabinet. (This means that the internal delays needed to achieve a correct time alignment are set for cabinets standing next to each other with both fronts aligned).
By doing so, drivers are working perfectly together and providing the best efficiency possible. It is then up to the user to adjust the delay on the NEXO TD Controllers to match the physical path difference of the different systems. It is thus possible to get a well-adjusted system, even without measuring instruments.
SYSTEM CHECK ALIGNMENT GUIDELINES GEO S12 – LS18 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. Are the speakers properly connected and angled? Attach the first series of modules to the bumper.
TECHNICAL SPECIFICATIONS ECHNICAL PECIFICATIONS LS18 and LS18-E Subwoofers 8.1.1 System specifications LS18 WITH NEXO TDCONTROLLER SETUP Frequency Response @-6 dB 32 Hz to 130 Hz Sensitivity 1W@1m 107 dB SPL Nominal Peak SPL@1m 137 to 140 dB Available Crossover Frequencies...
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