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Summary of Contents for Nexo Ray Sub Series
- Page 1 Ray Sub Series RS15 Subwoofer User Manual RS15 Subwoofer User Manual V1.02 Date: 31/08/2010...
- Page 2 NEXO released its first gradient subwoofer – the CD12 – in 2002, which has been complemented since then by CD18, GEO SUB and RS15. These have been quickly adopted worldwide as standards, and are considered today as state of the art subwoofers.
- Page 3 PLEASE READ CAREFULLY BEFORE PROCEEDING Page 3/58 With RAY SUB patented technology, NEXO is again moving one step forward. RAY SUB technology is about optimizing positioning and phase relationship of radiating surfaces in vented enclosures, so that acoustic distance from rear to front sections always increases as frequency decreases;...
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Page 4: Please Read Carefully Before Proceeding
Water exposure: Do not expose the speaker system to direct rain, do not use it near water or in wet conditions. Do not place containers with liquid on speaker system as they might spill into openings. If any liquid such as water seeps into the speaker system, have it inspected by qualified NEXO personnel. - Page 5 PLEASE READ CAREFULLY BEFORE PROCEEDING Page 5/58 SAFETY INSTRUCTIONS FOR NEXO TD CONTROLLERS NEXO ANALOGUE TDCONTROLLERS, 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.
- Page 6 Page 6/58 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.
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Page 7: Table Of Contents
3.2.1 NXAMP connectors ........................20 3.2.2 RS15 and NXAMP recommended configurations..............20 RS15 Setups on NEXO TD Controllers ....................21 Analogue GEOS12 TDController ...................... 21 Digital NX242-ES4 and NXAMP TDControllers ................21 Connection diagrams..........................22 RS15 with GEOS12 TDController (Mono Omni Mode) ..............22 RS15 with NX242-ES4 TD Controller (Stereo Omni or Directional Mode) ........ - Page 8 8.3.2 Delay values implementation....................40 8.3.3 Coverage result ........................41 Aligning RS15s with main system ..................... 41 8.4.1 NEXO systems acoustic reference point .................. 41 8.4.2 Precautions ..........................42 8.4.3 Alignment with distance measurement ..................42 8.4.4 Alignment with phase measurement..................43 Recommended installation tools and equipment................
- Page 9 TABLE OF CONTENTS Page 9/58 10.5.1 Specifications ........................... 53 10.5.2 Front and Rear Panel view....................... 53 10.6 NX242 Digital TDController with NX-Tension Card ................54 10.6.1 Specifications ........................... 54 10.6.2 Front and Rear Panel view....................... 54 10.7 NXAMP4x1 & NXAMP4x4 Powered Digital TDControllers..............55 10.7.1 Specifications ...........................
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Page 10: Introduction
Page 10/58 NTRODUCTION NTRODUCTION Thank you for selecting a NEXO RS15 Subwoofer System. This manual is intended to provide you with necessary and useful information about your RS System, which includes the following products: • RS15 is a Directivity Configurable Subwoofer, which comprises two 15” (38cm) long excursion Neodynium direct radiating drivers mounted in a dual volume vented enclosure with aerodynamic profiled vents;... - Page 11 Page 11/58 NTRODUCTION As for all NEXO systems, the RS15 is controlled, powered and monitored by dedicated NEXO TDControllers: • GEO S12 TDController is based on PS analogue TDController design, and provides full control for RS15 in omnidirectional mode associated to Geo S12.
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Page 12: Rs15 General Instructions
RS15 LEFT Mounting skids on the pole stand hole side defines a “RS15 LEFT”. In such a case, front grid must be removed, flipped over and reinstalled so that NEXO logo appears on the same side than the skids. CONFIGURING RS15 AS LEFT 2.1.2... -
Page 13: Mounting Optional Accessories
RS15 G Page 13/58 ENERAL NSTRUCTIONS 2.2 Mounting Optional Accessories IMPORTANT IN ORDER TO PREVENT SCREWS FROM GETTING LOOSE, USE BLOCKING LIQUID LOCTITE 243 OR EQUIVALENT FOR ALL SCREWS USED WITH RS15 ACCESSORIES. 2.2.1 RS15 Handles • Tools: TORX #50 •... -
Page 14: Rs15 Wheels
Page 14/58 RS15 G ENERAL NSTRUCTIONS INSTALLING RS15 FLYING PLATES AND HANDLES Holes to be filled with Loctite 243 Link Bars going upwards opposite to skids Vertical Openings opposite to loudspeakers 2.2.3 RS15 Wheels • Tools: HEXE #13 • Remove the four screws on RS15 back panel; •... -
Page 15: Rs15 Dolly
RS15 G Page 15/58 ENERAL NSTRUCTIONS 2.2.4 RS15 Dolly IMPORTANT TRANSPORTING RS15 ON DOLLY REQUIRES THAT FLYING PLATES ARE INSTALLED ON ALL CABINETS SO THAT RS15’S CAN BE SECURED TOGETHER: RS15 DOLLY IS DESIGNED FOR UP TO 3 RS15’S AND BUMPER; NEVER EXCEED THESE QUANTITIES. -
Page 16: Speaker Connection
Page 16/58 RS15 G ENERAL NSTRUCTIONS 2.3 Speaker connection 2.3.1 Configuring Connector and Owner plates Owner and Connector plates can be exchanged depending on chosen directional configuration Please note that the connector plate can pass through the holes, no unsoldering is therefore required. •... -
Page 17: Cabling
2.3.3 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 Front and Rear drivers. Cable choice consists mainly of selecting cables of the correct sectional dimension (size) in relation to the load resistance and the cable length. -
Page 18: Amplifier Selection For Use With Rs15
RS15 MPLIFIER SELECTION FOR USE WITH 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. If an incident occurs on an installation without protection, the fact that amplifiers only generating half their rated output power (-3dB) are used will not change anything in respect of possible damage. - Page 19 Remember that constant sensitivity settings will give a different gain value when the amplifier power is different. NEXO recommends low gain amplifiers: +26dB is recommended, as it is at the same time adequately low and quite common amongst amplifier manufacturers. This gain setting improves signal to noise ratio and allows all preceding electronic equipment, including the NX242 TDcontroller or GEO S12 TDController, to operate at optimum level.
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Page 20: Rs15 And Nxamp Tdcontrollers
Page 20/58 RS15 MPLIFIER SELECTION FOR USE WITH NEXO do not advise using other protection systems in conjunction with the NX242 and they should be disabled. IMPORTANT For proper system protection, no latency time or non-linear devices should be inserted between the output of GEO S12 TDController or NX242 TDController and the input of loudspeakers through use of DSP modules such as internal amplifier signal processing. -
Page 21: Rs15 Setups On Nexo Td Controllers
2 x GEO S1210’s or 2 Geo x S1230’s (mono or stereo). 4.2 Digital NX242-ES4 and NXAMP TDControllers At RS15 release time (November 2007), 46 setups combining RS15 with NEXO speakers are available in NX242 / NXAMP load 2.43. Please consult www.nexo-sa.com for upgrade releases. -
Page 22: Connection Diagrams
Page 22/58 ONNECTION DIAGRAMS ONNECTION DIAGRAMS 5.1 RS15 with GEOS12 TDController (Mono Omni Mode) FROM AMPLIFIERS C A U T I O N Sense must be connected for TO AMPLIFIERS speaker protection SEE USER MANUAL BALANC ED IN PUT S BALANC ED OUT PUT S SEN SE IN PUT EARTH... -
Page 23: Rs15 With Nx242-Es4 Td Controller (Stereo Omni Or Directional Mode)
Page 23/58 ONNECTION DIAGRAMS 5.2 RS15 with NX242-ES4 TD Controller (Stereo Omni or Directional Mode) FROM AMPLIFIERS TO AMPLIFIERS IN RIGHT IN LEFT + 4 - + 3 - + 2 - + 1 - RIGHT RIGHT LEFT LEFT FRONT REAR FRONT REAR... -
Page 24: Rs15 With Nxamp (Stereo Omni Or Directional Mode)
Page 24/58 ONNECTION DIAGRAMS 5.3 RS15 with NXAMP (Stereo Omni or Directional Mode) OUT C OUT A IN B IN A... -
Page 25: Rs15 Rigging Instructions
However, user must always apply his or her knowledge, experience and common sense. If in any doubt, seek advice from your supplier or NEXO agent. This manual offers guidance only for RS15 RAYSUB systems. References in this manual to other rigging equipment such as motor hoists, steels, shackles etc. -
Page 26: Ground Stacking Safety
• The RS15 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. •... -
Page 27: Contacts
RS15 accessory range if any component is purchased from a different supplier. 6.1.3 Contacts Correct training is fundamental to safe practise when working with loudspeaker flying systems. NEXO recommend that users contact local industry associations for information on specialist courses. Information for International training agencies can be obtained by contacting either:... -
Page 28: Flying Rs15 Arrays
Page 28/58 RS15 R IGGING NSTRUCTIONS 6.2 Flying RS15 arrays IMPORTANT Maximum allowed RS15 quantity to be flown is 12; RS15 bumper rigging point must be adjusted so that bumper always remains horizontal; RS15 flying system forbids angles between adjacent cabinets. IMPORTANT RS15 bumper is designed to be flown from one rigging point only. -
Page 29: Adjusting Rigging Point For Horizontality
RS15 R Page 29/58 IGGING NSTRUCTIONS 6.2.3 Adjusting rigging point for horizontality Before connecting a second cabinet, bumper angle has to be adjusted for perfect horizontality. This requires that the rigging point is adjusted in the two horizontal directions so that the bumper remains horizontal within +/-1°. -
Page 30: Flying The Second Rs15
Page 30/58 RS15 R IGGING NSTRUCTIONS Adjusting 0° along the cabinet width Adjusting horizontality along cabinet depth is done by properly adjusting the bumper axis as described in drawings below: Do not forget to secure the axis with “R” clips once horizontality is achieved. Assembly is now ready for second RS15 connection. -
Page 31: Flying Subsequent Rs15'S
RS15 R Page 31/58 IGGING NSTRUCTIONS 6.2.5 Flying subsequent RS15’s • Repeat above steps for subsequent RS15’s • Lift cluster defined rigging height, secure cluster horizontally to prevent it from rotating; IMPORTANT Do not attempt to make any change to the bumper rigging point once the cluster is lifted •... -
Page 32: Testing And Maintenance Of The Rs15 Flying System
• After cleaning, the rigging system must be treated with a suitable lubricant to prevent rusting. NEXO recommends the use of Scottoil FS365 or equivalent which is a water-based lubricant with a mixture of machine oil, surfactant and anti-rust treatment. -
Page 33: General Guidelines For Subwoofer Design
Page 33/58 ENERAL GUIDELINES FOR SUBWOOFER DESIGN ENERAL GUIDELINES FOR SUBWOOFER DESIGN 7.1 Low Frequency Issues Even low frequency coverage is amongst the toughest issues in sound system design. Common issues that are faced in design are as follow: • Low frequency radiation is hard to control efficiently... -
Page 34: Gradient Subwoofers Benefits
Page 34/58 ENERAL GUIDELINES FOR SUBWOOFER DESIGN 7.2 Gradient Subwoofers benefits Gradient subwoofers can provide up to 15 dB front to rear average attenuation (Please refer to Ray Sub technical note for in-detail explanation on gradient subwoofers). Low frequency level on stage is therefore significantly reduced on stage, and in the neighbouring environment in open air venues. -
Page 35: Stereo Design
Page 35/58 ENERAL GUIDELINES FOR SUBWOOFER DESIGN Main drawback of monophonic designs as the ones described above is inconsistent phase relationship between subwoofer arrays and main systems over the audience area (lack of impact in the 80Hz-125Hz bandwidth). 7.4 Stereo Design If stereophonic implementation has to be maintained, then Left and Right array coverage patterns have to be as independent as possible –... -
Page 36: Ray Subs Implementation
RS15 can be installed “Left” or “Right” (see section 2.1): - “Left” means grid is Left when looking from front; - “Right” means grid is right when looking from front. Whenever possible, NEXO recommends symmetrical designs. 8.2.1 Single RS15 Single RS15 have an asymmetrical pattern in the horizontal plane (ie speakers on the side), which is tilted 30°... -
Page 37: Rs15S Pair
50cm (20”) from the RS15 side walls and drivers. In case of stereo configurations, NEXO recommends that speaker side is set outwards to minimize interference region in stereo designs (ie “RS15s LEFT” should be installed Left and “RS15s RIGHT”... - Page 38 Page 38/58 RAY SUB S IMPLEMENTATION “BACK TO BACK” CONFIGURATION AT 100 HZ “FACE TO FACE” CONFIGURATION AT 100 HZ...
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Page 39: Rs15S Arrays
RAY SUB Page 39/58 S IMPLEMENTATION 8.2.3 RS15s arrays IMPORTANT RS15s arrays must be installed with bumper set horizontally and all cabinets at 0°. Flying RS15s columns can significantly improve low frequency coverage in the vertical plane, and therefore over audience depth provided height is sufficient. A 12 RS15 cluster flown at 10m/30ft will provide a +/- 3dB pressure level deviation at 100Hz over an audience area 75m/200ft deep while maintaining 15 to 20dB attenuation on stage (see figure below). -
Page 40: Delay Values Implementation
Page 40/58 RAY SUB S IMPLEMENTATION θ θ θ GROUP OF 2 RS15S STEERING GROUP OF 3 RS15S STEERING GROUP OF 4 RS15S STEERING “Steering” delays values for the pairs can easily be computed according to following formula: τ = h*sin(θ)/C (metric) τ... -
Page 41: Coverage Result
RS15’as and PS8/PS10/PS15, GeoS8/Geo12 systems. These crossover algorithms are defined for speaker acoustic reference points being aligned. The acoustic reference point on all NEXO products is the front of each cabinet, therefore: • RS15’s reference point in Omni Mode is center of the front grid •... -
Page 42: Precautions
& safety of the system (mostly time alignment). At NEXO, great care is taken to design optimum phase alignment from one octave above to one octave below the crossover frequency point. By doing so, drivers are working perfectly together and providing the best efficiency possible. -
Page 43: Alignment With Phase Measurement
Computer – Laptop or Desktop PC running Windows 2000 or XP with the current version of NEXO GeoSoft2 installed. It is not possible to configure a Geo tangent array properly without using GeoSoft2. Note that, when GeoSoft2 designs are prepared prior to arrival at the venue, it is often necessary to modify or update the design to accommodate special circumstances. -
Page 44: Rs15 System Check List
Page 44/58 RS15 S YSTEM HECK RS15 S YSTEM HECK It is essential to execute all these check steps prior to 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. 9.1 Are the NX Digital TDcontrollers properly configured? IMPORTANT If you must change any of the parameters listed below, make sure that you use the same... -
Page 45: Final Pre-Sound Check Check
RS15 S Page 45/58 YSTEM HECK when listening from behind the system, switch the front drivers in and out. You should hear a reduction in the LF range when the both front and rear drivers are on as compared to when the rear drivers only are on;... -
Page 46: Rs15 Technical Specifications
Order RS15-C (finished grey carpeting) or RS15-P (finished in black structured coating) As part of a policy of continual improvement, NEXO reserves the right to change specifications without notice. Response curves and data: anechoic far field above 200 Hz, half-space anechoic below 200 Hz. -
Page 47: Dimensions
RS15 T Page 47/58 ECHNICAL PECIFICATIONS 10.2 Dimensions 42.28" 1074 mm 10.3 Diagrams 10.3.1 Frequency Response and Impedance (dB) Level, Sound pressure Frequency (Hz) OC : Response C urve for 2.83Vrms at NX242 input Amplitude log Frequency (Hz) F: Omni Mode FC : C ardio Mode... -
Page 48: Polar Plots
Page 48/58 RS15 T ECHNICAL PECIFICATIONS 10.3.2 Polar plots Omni Mode (2xRS15 front) Directional Mode (2xRS15 side) - Page 49 RS15 T Page 49/58 ECHNICAL PECIFICATIONS Directional Mode (2xRS15 face to face – 50cm – 20”) Directional Mode (2xRS15 back to back)
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Page 50: Rs15 Accessories
Page 50/58 RS15 T ECHNICAL PECIFICATIONS 10.4 RS15 Accessories 10.4.1 RS15-BUMPER Dimensions 43.8" 1113 mm 10.4.2 RS15-FPLATES Dimensions 2.24" 57 mm 10.4.3 RS-15 HANDLES Dimensions... -
Page 51: Rs15-Wheels
RS15 T Page 51/58 ECHNICAL PECIFICATIONS 2.13" 54 mm 10.4.4 RS15-WHEELS Dimensions 3.62" 92 mm... -
Page 52: Rs15-Dolly
Page 52/58 RS15 T ECHNICAL PECIFICATIONS 10.4.5 RS15-DOLLY Dimensions 43.22" 1098 mm 10.4.6 RS15 Push-Pins (BLGEOS) Dimensions 20 mm... -
Page 53: Geo S12 Analogue Tdcontroller
RS15 T Page 53/58 ECHNICAL PECIFICATIONS 10.5 GEO S12 Analogue TDController 10.5.1 Specifications SPECIFICATIONS Output Section +22 /+16/+10 dBm typ. into 600 Ohm load. Back Panel switch on +6/0/-6dB respectively. Input Section Maximum input Level : 22dBu. CMRR 80dB @ 1kHz typ. THD+N 0.1% @ 1kHz Typ. -
Page 54: Nx242 Digital Tdcontroller With Nx-Tension Card
Individual Mute/Solo buttons and red LED for each channel Amp. Sense & Peak (green & red) LED’s for each channel FLASH EPROM Software updates/upgrades, new system setups, available on www.nexo-sa.com Rear Panel RS232 connector for serial com 2 x RJ45 connectors with NXTension ES4 Card 1 RJ45 + 2 RJ11 with NXTension CAI Card Dimensions &... -
Page 55: Nxamp4X1 & Nxamp4X4 Powered Digital Tdcontrollers
NXAMP4x1: 3U 19” Rack – 457mm (18”) Depth – 16.5kg (33lbs) net NXAMP4x4: 4U 19” Rack – 457mm (18”) Depth – 24.5kg ( 49lbs) net NXAMP USER CONTROLS System Selection Allows control across all NEXO range System Setup Within selected range, allows cabinets to be set for: passive or active;... -
Page 56: Front And Rear Panel View
Page 56/58 RS15 T ECHNICAL PECIFICATIONS 10.7.2 Front and Rear Panel view... -
Page 57: Rs15 Parts & Accessories List
RS15 P & A Page 57/58 ARTS CCESSORIES 11 RS15 P & A ARTS CCESSORIES 11.1 Modules & Control Electronics List MODEL DRAWING DESCRIPTION RS15 RS15 Subwoofer GEOS12TD Analogue GEOS12 TDController NX242ES4 Digital TDController with NXtension Card GeoD Passive mode Crossover 80Hz NXAMP4x1 Power Digital TDController 4x1300W/2Ω... -
Page 58: User Notes
Page 58/58 USER NOTES 12 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.com...
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