GEO M6 Series Geo M620 & Geo M6Bass Tangent Array Modules User Manual GEO M6 Series User Manual V1.
Page 2/62 PLEASE READ CAREFULLY BEFORE PROCEEDING 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.
PLEASE READ CAREFULLY BEFORE PROCEEDING Page 3/62 PLEASE READ CAREFULLY BEFORE PROCEEDING BASIC PRECAUTIONS Do not open the speaker system or attempt to disassemble the internal parts or modify them in any way. The speaker system contains no user-serviceable parts. If it should appear to be malfunctioning or damaged, discontinue use immediately and have it inspected by qualified NEXO service personnel.
Page 4/62 PLEASE READ CAREFULLY BEFORE PROCEEDING SAFETY INSTRUCTIONS FOR NEXO TD CONTROLLERS NEXO ANALOGUE PSTDCONTROLLERS, NX242 DIGITAL CONTROLLER, NXAMP4x1 AND NXAMP4x4 POWERED CONTROLLERS ARE CLASS 1 APPARATUS AND MUST BE EARTHED. THE GREEN AND YELLOW WIRE OF THE MAINS CORD MUST ALWAYS BE CONNECTED TO AN INSTALLATION SAFETY EARTH OR GROUND. THE EARTH IS ESSENTIAL FOR PERSONAL SAFETY AS WELL AS THE CORRECT OPERATION OF THE SYSTEM, AND IS INTERNALLY CONNECTED TO ALL EXPOSED METAL SURFACES.
PLEASE READ CAREFULLY BEFORE PROCEEDING Page 5/62 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.
Page 6/62 CONTENTS CONTENTS PLEASE READ CAREFULLY BEFORE PROCEEDING .................................................................... 3 CONTENTS......................................................................................................................................... 6 1 INTRODUCTION ......................................................................................................................... 8 2 GEO M6 GENERAL SET-UP INSTRUCTIONS ............................................
CONTENTS 9 Page 7/62 SYSTEM ALIGNMENT GUIDELINES........................................................................................38 9.1 GEO M6 VERTICAL CLUSTER DESIGN ...................................................................................38 9.2 STACKED LS18S AND FLOWN GEO M6 .................................................................................38 9.3 DRIVING THE LS18S FROM THE AUX SEND ............................................................................39 9.
Page 8/62 1 INTRODUCTION INTRODUCTION Thank you for selecting a NEXO GEO M6 Series Tangent Array System. This manual is intended to provide you with necessary and useful information about your GEO M6 System, which includes the following products: GEO M620 is a 20° Tangent Array Module. It comprises 1x6.5” (17cm) 8 ohms LF/MF driver and 1x1.5” voice coil, 1” Throat 16 Ohm HF Driver loaded by a 15° Hyperboloid Reflective Wavesource™. GEO M6B is a Bass-Mid Reinforcement module for Geo M620.
GEO M6 GENERAL SET-UP INSTRUCTIONS 2 2.1 Page 9/62 GEO M6 GENERAL SET-UP INSTRUCTIONS Speaker connection GEO M620 and M6B are connected with Speakon NL4FC plugs (not supplied). The 4 pins of the 2 Speakon sockets identified in / out are connected in parallel within the enclosure. Either connector can be used to connect to NXAMP or to link to an additional Geo M6 cabinet. Therefore, a single 4-conductor cable can connect two NXAMP channels to various Geo M620 and M6B. 2.1.
Page 10/62 3 3.1 AMPLIFIER SELECTION FOR USE WITH GEO M6 & LS18 AMPLIFIER SELECTION FOR USE WITH GEO M6 & LS18 GEO M6 and NXAMP TDControllers NEXO Powered TDControllers NXAMP 4X1 is an integrated solution for Control and amplification for all NEXO speaker ranges. NXAMP4x1 power capability is listed in the table below: Mode NXAMP4x1 4 Channels Bridge Stereo 4 x 600 Watts / 8 Ohms 2 x 1800 Watts / 8 Ohms 4 x 900 Watts / 4 Ohms 2 x 2600 Watts / 4 Ohms 4 x 1300 Watts / 2 Ohms 3.1.
GEO M6 SETUPS ON NEXO TD CONTROLLERS 4 Page 11/62 GEO M6 SETUPS ON NEXO TD CONTROLLERS 4.1 NXAMP TDControllers As of this manual printing date, load 3.22 features the setups listed in below table in the “NEXO configurations” menu. NEXO recommended setups CH1 CH2 CH3 CH4 'M620-LS18 120Hz' '1-3 Boxes' LS18 (bridged with CH2) N/A M620 M620 'M620-LS18 120Hz' '4-12 Boxes' LS18 (bridged with CH2) N/A M620 M620 'M620-70Hz' '4 Ch. 1-3 Boxes' M620 M620 M620 M620 'M620-70Hz' '4 Ch.
Page 12/62 5 5.
CONNECTION DIAGRAMS 5.
Page 14/62 5.3 CONNECTION DIAGRAMS 3 x GEO M620 stereo – 3 x GEO M6B stereo - 2 x LS18 mono on NXAMP4x1 Channels 1 & 2 are bridge mono for 2xLS18, channel 3 drives 3xGEO M6Bass, channel 4 drives 3x GEO M620.
CONNECTION DIAGRAMS 5.4 6 x GEO M620 stereo – 6x GEO M6B stereo on NXAMP4x1 Channels 1 & 3 drive 3xGEO M6Bass each, channels 2&4 drive 3xGEO M620 each.
Page 16/62 6 NS-1 SIMULATION SOFTWARE NS-1 SIMULATION SOFTWARE NS-1 software is a R&D simulation tool derived application. It processes measured speaker data with complex mathematical algorithms to assist the user in optimizing system design. Due to the complexity of the interaction of multiple cabinets, it is simply not possible to reliably design curved vertical arrays without using the processing power of a computer to predict the optimum array structure for a given audience geometry.
CONFIGURABLE DIRECTIVITY DEVICE 7 Page 17/62 CONFIGURABLE DIRECTIVITY DEVICE The GEO Wavesource controls dispersion of acoustic energy using an hyperboloid acoustical reflector in the vertical plane and a diffraction slot in the horizontal plane. The patented Configurable Directivity Device consists of bolt-on flanges that alter the diffraction slot’s exit flare rate thus increasing the horizontal coverage from 80° to 120°. 7.
Page 18/62 7.2 CONFIGURABLE DIRECTIVITY DEVICE When & where to use Configurable Directivity flanges The diagrams show audience area coverage for a stereo system. While a 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).
GEO M6 HARDWARE SETUP PROCEDURE 8 Page 19/62 GEO M6 HARDWARE SETUP PROCEDURE Before proceeding with assembly of GEO M6 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 M6 rigging system requires three experienced persons for set-up: typically one motor hoist operator, and one operator per side of the array.
Page 20/62 GEO M6 HARDWARE SETUP PROCEDURE 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.
GEO M6 HARDWARE SETUP PROCEDURE 8.1.3 Page 21/62 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.
Page 22/62 8.2 GEO M6 HARDWARE SETUP PROCEDURE General Description 8.2.1 GEO M6 modules rigging system GEO M620 GEO M620Bass GEO M6BASS and GEO M620 feature a 3 point rigging system, 2 for front connection, and 1 for rear connection and angle splay settings. Angle splay setting sequence is: 0.5° - 2° - 5° - 10° - 15° - 20° Below drawings show rear connecting bar configuration according to “left” or “right” configuration. 8.2.
GEO M6 HARDWARE SETUP PROCEDURE 8.2.3 Page 23/62 GEO M6 Angle Setting Bar configuration GEO M6 angle setting bar connects 2 x GEO M6 with 2 x VXT-BL515.
Page 24/62 GEO M6 HARDWARE SETUP PROCEDURE 8.2.
GEO M6 HARDWARE SETUP PROCEDURE 8.2.5 Page 25/62 Described configurations FIX INSTALLATION APPLICATIONS SECTION 8.3.1 SECTION 8.3.2 1 to 3 GEO M6 WALL MOUNTED 1 to 3 GEO M6 CEILING MOUNTED SECTION 8.3.3 4 to 12 GEO M6 CEILING MOUNTED TOURING APPLICATIONS SECTION 8.3.4 1 to 3 GEO M6 POLE MOUNTED SECTION 8.3.7 3 to 12 GEO M6 FLOWN SECTION 8.3.5 SECTION 8.3.
Page 26/62 GEO M6 HARDWARE SETUP PROCEDURE 8.2.6 WARNINGS ON GEO M6 ACCESSORIES WARNING 1 All GEO M6 Accessories are specifically rated in agreement with structural computations. Never use other accessories – including push-pins - when assembling GEO M6 cabinets than the ones provided by NEXO: NEXO will decline responsibility over the entire GEO M6 accessory range if any component is purchased from different supplier.
GEO M6 HARDWARE SETUP PROCEDURE 8.3.1 Page 27/62 1 to 3 (maximum) GEO M6 wall mounted Required items - 1 x VNI-WS15 - 1 x GMT-LBUMP - 1 to 3 GMT-BNFIX - 3 x 12mm diameter screws (not provided) IMPORTANT Ensure that the wall is strong enough to hold GEO M6 cluster weight and that the 12 mm diameter screws and corresponding plugs required to fix the VNI-WS15 on the wall are properly dimensioned.
Page 28/62 GEO M6 HARDWARE SETUP PROCEDURE 8.3.2 1 to 3 (maximum) Geo M6 ceiling mounted Required items - 1 x GMT-LBUMP - 1 to 3 x GMT-BNFIX - 4 x 8mm diameter screws (not provided) IMPORTANT Ensure that the ceiling is strong enough to hold GEO M6 cluster weight and that the four screws 8 mm diameter and corresponding plugs required to fix the GMT-LBUMP under the ceiling are properly dimensioned.
GEO M6 HARDWARE SETUP PROCEDURE 8.3.3 Page 29/62 4 to 12 (maximum) GEO M6 ceiling mounted Required items - 1 x GMT-BUMPER - 4 to 12 x GMT-BNFIX - 4 x 8mm diameter screws (not provided) IMPORTANT Ensure that the ceiling is strong enough to hold GEO M6 cluster weight and that the four screws 8 mm diameter and corresponding plugs required to fix the bumper under the ceiling are properly dimensioned.
Page 30/62 GEO M6 HARDWARE SETUP PROCEDURE 8.3.
GEO M6 HARDWARE SETUP PROCEDURE Page 31/62 Procedure - Attach the GMT-LBADPT to the GMT-LBUMPER by using the screws, washers and bolts provided with GMT-LBDAPT; - Use the 2 pins provided with VNT-POLE to attach L-BUMP at required vertical angle, according to below drawings; Bottom Geo M6 at 0° Bottom Geo M6 at -5° Bottom Geo M6 at -10° NB: above connection configurations are designed for assembly gravity center being aligned with pole axis, ensuring maximum safety.
Page 32/62 GEO M6 HARDWARE SETUP PROCEDURE 8.3.
GEO M6 HARDWARE SETUP PROCEDURE 8.3.
Page 34/62 GEO M6 HARDWARE SETUP PROCEDURE 8.3.7 4 to 12 (maximum) GEO M6 flown Required items - 1 or 2 hoists (not provided). - 1 x GMT-BUMPER - 1 x GMT-EXBAR for extended positive and negative bumper angles - 4 VXT-BL515 per GEO M6 - 1 x GMT-6CASE for 6 x GEO M6 IMPORTANT Maximum GEO M6 quantity for flown vertical cluster is 12 (and eventually less). Please check NS1 for mechanical Safety Working Load and acoustic computations.
GEO M6 HARDWARE SETUP PROCEDURE - lift assembly to sufficient height in order to connect additional set GEO M6 if required - set inter-angle values as described in section 8.2.3 Page 35/62 IMPORTANT Ensure all pins are properly locked into Geo M6 - lift cluster to NS-1 defined rigging height, secure cluster horizontally to prevent it from rotating - Secure bumper with secondary safety steel. IMPORTANT The requirements for secondary safety systems vary with territories.
Page 36/62 GEO M6 HARDWARE SETUP PROCEDURE Procedure with flight case set horizontally - Open upper cover while the flight case is on its wheels - Connect GMT-BUMPER to top cabinet 4 x VXT-BL515 quick release pins - If required, connect GMT-EXBAR to GMT-BUMPER by inserting EXBAR clevis pins into GMTBUMPER “B” and “D” holes - Connect single hoist to required hole as indicated in NS1 design o “A”, “B”, “C”, “D” or “E” on GMT-BUMPER o Or “1” to “9” if using GMT-EXBAR o If using 2 hoists, connect
GEO M6 HARDWARE SETUP PROCEDURE 8.4 Page 37/62 Testing and Maintenance of the system General: Geo is a precision piece of equipment and requires regular attention to maintenance in order to give long and reliable service. Rigging NEXO recommends regular testing of loudspeaker rigging components, preferably using a suitable test rig coupled with a visual inspection. Fasteners: there are several critical points in the LS18 and GEO M6 cabinets.
Page 38/62 9 SYSTEM ALIGNMENT GUIDELINES SYSTEM ALIGNMENT GUIDELINES The NXAMP’s factory delay presets are optimised to provide the best possible crossover between the GEO M6 and LS or RS Subwoofers 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).
SYSTEM ALIGNMENT GUIDELINES 9.3 Page 39/62 Driving the LS18s from the AUX send It is quite common to use the AUX send of a mixing desk to drive the Sub section of a PA system. This gives the mixing engineer more flexibility to set the level of the sub bass relative to the main PA, apply special effects, or to use a different EQ on the Sub. However, it also raises some serious issues for the performance & safety of the system (mostly time alignment).
Page 40/62 SYSTEM ALIGNMENT GUIDELINES Rangefinder measuring device – either a Disto type laser measure or an optical laser rangefinder can be used. Devices such as the Bushnell ‘Yardage Pro’ sports rangefinders provide sufficiently accuracy and are easy to use. They have the additional advantage of working very well in bright sunlight. Electronic calculator with trigonometric functions to calculate the height from ground level to points in the room.
GEO M6 – LS18S SYSTEM CHECK LIST Page 41/62 10 GEO M6 – LS18S 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. 10.1 Are the speakers properly connected and angled ? Attach the first series of modules to the bumper. Before flying, verify that all channels of all modules are functioning properly.
Page 42/62 TECHNICAL SPECIFICATIONS 11 TECHNICAL SPECIFICATIONS 11.1 LS18 Subwoofer 11.1.
TECHNICAL SPECIFICATIONS 11.1.
Page 44/62 TECHNICAL SPECIFICATIONS 11.2 GEO M620 Module 11.2.
TECHNICAL SPECIFICATIONS 11.2.
Page 46/62 TECHNICAL SPECIFICATIONS 11.3 GEO M6Bass Module 11.3.
TECHNICAL SPECIFICATIONS 11.3.
Page 48/62 TECHNICAL SPECIFICATIONS 11.4 GEO M6 Accessories 11.4.1 GMT-BUMPER Parts Dimensions Weight : 2,25 kg / 4.
TECHNICAL SPECIFICATIONS 11.4.2 GMT-EXBAR Parts Dimensions Weight : 2,25 kg / 4.
Page 50/62 TECHNICAL SPECIFICATIONS 11.4.3 GMT-BPDAPT Parts Dimensions Weight : 0,5 kg / 1.
TECHNICAL SPECIFICATIONS 11.4.4 GMT-LBUMPER Parts Dimensions Weight : 1,8 kg / 3.
Page 52/62 TECHNICAL SPECIFICATIONS 11.4.5 GMT-LBPADPT Parts Dimensions Weight : 0,7 kg / 1.
TECHNICAL SPECIFICATIONS 11.4.1 VNT-POLE Parts Dimensions Weight : 0,9 kg / 1.
Page 54/62 TECHNICAL SPECIFICATIONS 11.4.2 VNT-XHBRK Parts Dimensions Weight (kit) : 0,3 kg / 0.
TECHNICAL SPECIFICATIONS 11.4.3 VNT-TCBRK Parts Dimensions Weight (kit) : 0,620 kg / 1.
Page 56/62 TECHNICAL SPECIFICATIONS 11.4.1 GMT-IPCOV Parts Dimensions Weight : 0,34 kg / 0.
TECHNICAL SPECIFICATIONS 11.4.2 VXT-BL515 PUSH PINS Weight : 0,012 kg / 0.0004 lb 11.4.3 GMT-BNFIX Parts Weight (kit) : 0,2 kg / 0.
Page 58/62 TECHNICAL SPECIFICATIONS 11.4.4 VNI-WS15 Parts Dimensions Weight (kit) : 2,8 kg / 0.
TECHNICAL SPECIFICATIONS 11.4.5 GMT-6CASE Weight : 57 kg / 2.
Page 60/62 GEO M6 SERIES PARTS & ACCESSORIES LIST 12 GEO M6 SERIES PARTS & ACCESSORIES LIST 12.1 Modules & Control Electronics List MODEL DRAWING DESCRIPTION Subwoofer Module LS18 GEO M620 GEO M620 Module GEO M6B GEO M6B Module NXAMP4x1 Digital Powered Controller 4x1300W 12.
GEO M6 SERIES PARTS & ACCESSORIES LIST MODEL DRAWING Page 61/62 DESCRIPTION VNT-XHBRK Cable clamp for GMT-LBADPT (includes 8x45 Quick Release Pin).
Page 62/62 USER NOTES 13 USER NOTES France Nexo S.A. Parc d’activité de la Dame Jeanne F-60128 PLAILLY Tel: +33 3 44 99 00 70 Fax: +33 3 44 99 00 30 E-mail: info@nexo.fr www.nexo-sa.
