M3D Line Array Loudspeaker
Contents
1. Figure 23 Tying off cables to rings CAUTION The rear ring stud fittings shown N in Figure 23 must be used only to secure system cabling These fittings are not intended to be used for system rigging or a pull back motor pulling the bottom of the array backward to increase downward tilt The points are mounted on each side of the amplifier area so as not to interfere with the rain hood and the amplifier fan exhaust area 14 MAD I ine Arrav UsiNG THE M3D SUB WiTH THE M3D LINE ARRAY LOUDSPEAKER The M3D system will provide full bandwidth frequency response without M3D Sub directional subwoofers The height of the array number of cabinets and the desired SPL will determine how much sub bass energy can be provided proportional to the upper frequency spectrum If higher SPL is necessary or the program content requires additional sub bass energy then M3D Sub direction subwoofers can be used to augment the M3D line arrays There is no polarity switch on either the M3D Line Array or the M3D Sub directional subwoofer Both are wired pin 2 hot positive acoustic pressure when a positive pulse is applied to pin 2 The M3D Line Array frequency response operates down to 35 Hz while the M3D Sub operates in the range of 30 Hz to 80 Hz The M3D Sub therefore does not extend the system response appreciably rather it increases the acoustic power of the system in the2. LEFT CLUSTER 8 M3D a Op Deeg 6 0 5 5 0 5 DEEN ies toio yobs ioo booo loeeeo ieee 0000 0000 10000 o fo eee fooeeo lo eee D booo ioeoo ioeoo o w 2 0000 70000 0000 N ub abf abii 4 ell iis afili ao loeeo 170000 10000 20 ioooo 0000 0000 g joeoo ioeee ioeee booo booo 0000 10000 10000 booo lobs jo 0 loos 1010 b56 jolo d D E o 0 o ol o 0 6 5 o 0 ii v 00901636 iooo 10 0 r5 35 55 x5 95 55 5 5 5 5 55 go Qo oo g so oo o wooo ioeoo u 0800 10000 a e lt Kal oo d m 4 3 3 333 5 B E os podus 5 SS E E ie jjoeee poss a g uc 10000 0000 m ES o o0 o0 oO GB oO OG Nu poo es EG SEA HE lt oooeo 10900 z z 2 42 2 2 A GE sa 1 ke ioeoo 0000 hr io o 0 0 ioeee booo booo booo booo fooo Io 0 1010 9 0 i d 00 0 1010 o 0 o e eg m Ne P d O
3. W The lifespan of the drivers is reduced because they are subjected to excessive heat M3D TPL Limiters The left and right front low frequency drivers are driven by separate amplifier channels but are routed to one limiter the LO TPL F LED on the user panel indicates TPL activity for the front drivers The two rear low frequency drivers are driven by one amplifier channel the LO TPL R LED indicates TPL activity for the rear low frequency drivers The two high frequency drivers are driven by one amplifier channel the HI Limit LED shown in Figure 14 on page 7 indicates TPL activity for the high frequency drivers The limiters cease operation when the power level in the channel returns to normal and do not affect the signal when the LED is inactive M3D CO HI Peak OH TPL LO TPL F LF TPL R Figure 14 M3D Limit LEDs M32N line Arrav 7 NOTE The TPL LEDs indicate when the safe power level is exceeded If an entire system of M3Ds begins to limit before reaching the required sound pressure level SPL you should consider adding more loudspeakers M3D Peak Limiter When engaged the Peak Limiter prevents signal peaks from causing distortion in the high channel preserving headroom and maintaining smooth frequency response at high levels Peak limiting is indicated by the Hi Peak LED on the user panel the same on off cycle discussed for the TPL limiters applies to the Peak Limiter M3D Sub TPL Limit
4. Im Inneren diesem Lautsprecher herr schen potentiell gef hrliche Spannungen Nicht versuchen das Ger t zu ffnen Es enth lt keine vom Benutzer reparierbaren Teile Reparaturen d rfen nur von ausgebildetem Kundenienstpersonal durchgef hrt werden Espanol Para reducir el riesgo de descarga electrica desconecte de la red de voltaje el altoparlante antes de instalar el cable de senal de audio Vuelva a conectar la alimentacion de voltaje una vez efectuadas todas las interconexiones de senalizacion de audio Conecte el altoparlante a un tomacorriente bipolar y trifilar con neutro de puesta a tierra El tomacorriente debe estar conectado a la protecci n de derivaci n apropiada ya sea un fusible o un disyuntor La conexi n a cualquier otro tipo de tomacorriente puede constituir peligro de descarga el ctrica y violar los c digos el ctricos locales No instale el altoparlante en lugares donde haya agua o humedad excesiva No deje que en el altoparlante entre agua ni ning n objeto extrano No ponga objetos con l quidos encima de la unidad ni cerca de ella Para reducir el riesgo de sobrecalentamiento no exponga la unidad a los rayos directos del sol ni la instale cerca de artefactos que emiten calor como estufas o cocinas Este altoparlante contiene niveles de voltaje peligrosos en potencia No intente desarmar la unidad pues no contiene plezas que puedan ser repardas por el usuario Las reparaciones deben efectuarse nicam
5. This is also true when connecting in parallel loop out M3Ds or M3D Subs with other self powered Meyer Sound loudspeakers M3D Subs 650 Ps MSL 4s and so on An LD 1A LD 2 or LD 3 line driver is highly recommended when driving systems using multiple loudspeakers See Hybrid Line Arrays on page 11 For details on the M3D audio input characteristics amplification and protection circuitry refer to Appendix A Audio input on page 21 For details on the M3D Sub Audio Input Characteristics Amplification and Protection Circuitry refer to Appendix B Audio Input on page 23 AMPLIFICATION AND PROTECTION CIRCUITRY The M3D or M3D Sub is powered by the Meyer Sound HP 4 amplifier a high power four channel amplifier 1125 watts ch RMS with a total power of 4500 watts A MAD I ine Arrav The HP 4 amplifier utilizes complementary power MOSFET output stages class AB H All the specific functions for the M3D and M3D Sub such as crossovers frequency phase response and driver protection are determined by the control card installed inside the HP 4 amplifier All Meyer Sound loudspeakers are shipped with the drivers in correct alignment However if a driver needs to be replaced make sure the replacement is reinstalled with the correct polarity Incorrect driver polarity impairs the system performance and may damage the drivers M3D Interconnections Each front 4 ohm 15 inch low frequency driver is po
6. MAPP Multipurpose Acoustical Prediction Program Online is a powerful cross platform Java based application for accurately predicting the coverage pattern frequency response impulse response and maximum SPL output of arrayed Meyer Sound loudspeakers Residing on the local host computer the Java application facilitates configuring arrays of a wide variety of Meyer Sound products and optionally defines the environment in which they will operate including air temperature pressure and humidity as well as the location and composition of walls You can find MAPP Online at www meyersound com products software mapponline NOTE You will need to apply for use of MAPP Online by clicking on the appropriate link on the screen at the URL above Once your registration is complete you will be given a user name and password which will be returned to you by email along with the address for the MAPP Online program itself Follow the online instructions to install the program on your computer When a prediction is requested data are sent over the Internet to a high powered server computer at Meyer Sound that runs a sophisticated acoustical prediction algorithm using high resolution complex magnitude and phase polar data Predicted responses are returned over the Internet and displayed on the local host in color With MAPP Online you can m Plan an entire portable or fixed loudspeaker system and determine delay settings for fill louds
7. and off for one second FANS AND COOLING SYSTEM The M3D uses a forced air cooling system with four fans to prevent the amplifier modules from overheating The fans draw air in through ducts on the front of the cabinet over the heatsinks and out the rear of the cabinet Because dust does not accumulate in the amplifier circuitry its lifespan is increased significantly The front grill surface acts as an air filter for the cooling system and should always be in place during operation amplifier AzOJXunRn heatsinks air intake E Figure 16 Airflow of M3D fans Despite the filtering extensive use or a dusty operating environment can allow dust to accumulate along the path of the airflow preventing normal cooling We recommend periodically removing the grill and amplifier module and using a vacuum cleaner to clear dust from the grill fans and heatsinks CAUTION Be sure to unplug power to the unit before cleaning the air filter Make sure that the air ducts are clear NOTE Always use the rain hood in the fully open position to maintain proper cooling of the amplifier Mever Saind ahoratoaries Inc Two variable speed primary fans run continuously with an inaudible operating noise of 22 dBA at 1 m at their slowest speed The primary fans begin increasing speed when either of the two heatsinks reaches 42 C The fans reach full speed at 62 C and are barely audible near the cabinet even without an aud
8. between quiet and loud operating levels Since different cables and circuit breakers heat up at varying rates it is essential to understand the types of current ratings and how they correspond to circuit breaker and cable specifications Maver Saind ahoratories Inc The maximum continuous RMS current is the maximum RMS current in a period of at least ten seconds It is used to calculate the temperature increase in cables which is used to select cables that conform to electrical code standards It is also used to select the cable size and gauge and the rating for slow reacting thermal breakers The maximum burst RMS current is the maximum RMS current in a period of approximately one second It is used to select the rating for most magnetic breakers The maximum instantaneous peak current during burst is used to select the rating for fast reacting magnetic breakers and to calculate the peak voltage drop in long AC cables according to the formula V pk drop pk x R cable total For best performance the AC Cable voltage drop should not exceed 10 Volts or 10 at 115V and 5 at 230V Use Table 1 below as a guide when selecting cable gauge size and circuit breaker ratings for your operating voltage Table 1 M3D and M3D Sub Current Ratings 115 VAC 230 VAC 100 VAC Max continuous RMS 18A 9A 20A Max burst RMS 32A 16A 36A Max peak during burst 50A 25A 57A Idle current 1 2A 0 6A 1 3A The minimum electrical s
9. 2 each 15 inch diameter cone drivers Nominal impedance 8 ohms Coil size 3 inches Power handling capability 600 W Note AES transducer rating wattage loudspeakers driven with a band limiting noise signal 125 Hz to 8 kHz with 6 dB peak to average ratio for two hours Note At low mid frequencies the two rear facing 15 inch drivers produce a wave front that interacts with and is additive to the wave front produced by the two front facing drivers while reducing sonic energy directed from the rear of the cabinet The resultant directional low frequency output extends to 35 Hz with a 25 dB reduction in SPL behind the cabinet High frequency 20 M3D Iine Arrav Two 4 inch diaphragm compression drivers coupled to a constant directivity horn through a proprietary acoustical combining manifold Nominal impedance 8 ohms Voice coil size 4 inches Diaphragm size 4 inches Throat size 1 5 inches Power handling capability 200 W Note AES transducer rating wattage loudspeakers driven with a band limiting noise signal 125 Hz to 8 kHz with 6 dB peak to average ratio for two hours Maver Saind ahoratories Inc Table 2 M3D Line Array Specifications continued Audio input Type Differential electronic balanced Maximum common mode range 15 V DC clamped to earth for voltage transient protection Connectors Female XLR input with male XLR loop output Input impedance 10k ohms dif
10. 54 W x 20 H x 30 5 D 1372 mm x 508 mm x 762 5 mm 1295mm 54 00 1372mm Gan eX AN NS NZ 10 00 BS A 254mm Lele BE 8 50 216mm 30 50 775mm 51 00 Figure 30 M3D Loudspeaker physical dimensions Weight Net 415 Ibs 188 kg Shipping 500 Ibs 228 kg Safety Agency Recognitions CE Compliant UL Listed IEC 60065 1998 Compliant 22 MAD line Arrav Maver Saind ahoratories Inc APPENDIX B M3D SUB DIRECTIONAL SUBWOOFER SPECIFICATIONS Table 3 M3D Sub Directional Subwoofer Acoustical Operating frequency range 4dB 30 Hz 88 Hz 6 dB at 29 Hz and 95 Hz Phase response 30 Hz 95 Hz 90 at 30 Hz Maximum peak SPL 140 dB at 1 meter Horizontal coverage Transducers Cardioid response pattern Low frequency Audio Input Two each 18 inch diameter cone drivers Nominal impedance 4 ohms Voice coil size 4 inches Power handling capability 1200 W Two 15 cone drivers Nominal impedance 8 ohms Coil size 3 inches Power handling capability 600 W Note Power handling is measured under AES standard conditions transducer driven continuously for two hours with a band limited noise signal 125 Hz to 8 kHz having a 6 dB peak to average ratio Type Differential Electronic balanced Maximum common mode range 15 VDC clamped to earth for voltage transient protection Connectors Female XLR
11. Au ER ER E d Uu ul KD Ce Ju Figure 25 M3D Line Array and M3D Sub with M3D Sub attenuated by 6 dB The third option provides optimal headroom to the M3Ds while adding an often preferred frequency response bump centered around 65 Hz This configuration shown in Figure 26 and Figure 27 high passes the M3D loudspeakers in the array while letting the M3D Subs use their normal internal crossover frequencies If the 65 Hz bump in the spectrum isn t desired an equalization filter can be used to flatten the overall response while still optimizing system headroom To achieve this drive the M3D loudspeakers using the DS 2 or mid bass output of the LD 1A line driver as shown in Figure 26 or the LD 2 line driver as shown in Figure 27 with the DS 2 crossover engaged and with no polarity reversal This provides a crossover function by rolling off the M3D Loudspeakers below 80 Hz as shown in Figure 28 increasing its headroom at very low frequencies Maver Saind ahoratories Inc The DS 2 amp Sub Crossover network is composed of a low pass and an elliptical filter Pushing the switch in activates the two way crossover sending frequencies below 80 Hz to the Sub output and above 80 Hz to the DS 2 output With the switch out a full range signal is sent to both the DS 2 and Sub outputs Since this filter affects the DS 2 out and the SUB out the M3D Subs need to be connected to the Mid Hi output receiving a full range signal NOTE F
12. engineering to optimize line array performance for consistent reliable coverage As are all M Series products the M3D is self powered features Meyer Sound s QuickFly rigging and is configurable with most other Meyer Sound loudspeakers RMS Remote Monitoring System is standard The M3D is weather protected for outdoor applications Figure 1 M3D Line Array with BroadBandQ The companion M3D Sub Directional Subwoofer shown in Figure 2 extends system frequency response to 30 Hz while maintaining low frequency directional control and horizontal arrayability Use of the M3D Sub adds low frequency headroom to an M3D Line Array Figure 2 M3D Sub Directional Subwoofer NOTE Please read this entire manual carefully before configuring and deploying systems In particular please pay careful altention to the sections about safety issues The Meyer Sound M3D is the first and only line array system to feature state of the art BroadBandQ technology BroadBandQ marries a remarkable new Maver Saind ahoratories Inc ting Instructions M3D Line Array high frequency manifold system with Meyer s proprietary award winning directional low frequency technology to precisely control vertical and horizontal coverage between 35 Hz and 16 kHz The result is truly optimized line array behavior affording performance that is markedly superior to conventional systems To reproduce high frequencies the M3D employs an REM Ri
13. in the three fabric pockets of the hood NOTE The bars must be inside the fabric pockets to achieve proper water protection 3 Carefully install the fabric rain hood using the 1 75 inch stainless steel screws and washers provided in the kit 4 Align all eight screws so that the washers are over the fabric 10 M amp AN line Arrav 5 Start all eight screws into the holes before tightening them 6 Use the screws to sandwich the fabric and its gasket reinforcement bar over the external gasket 7 Once all eight screws are started tighten them using a 2 Phillips screwdriver 8 Tighten the inner four screws first and then tighten the remaining four corners CAUTION Never use power tools to remove or replace the stainless steel rain hood screws on the M3D or M3D Sub How Do Line Arrays Work Though hybrid line array systems are relatively new to the sound reinforcement industry line arrays have been used since the 1950s They have been described as a group of radiating elements arrayed in a straight line closely spaced and operating with equal amplitude and in phase Line arrays achieve directivity through constructive and destructive interference A simple thought experiment illustrates how this occurs Consider a speaker comprising a single 12 inch cone radiator in an enclosure We know from experience that this speaker s directivity varies with frequency at low frequencies it is omnidirectional as
14. risk of overheating the loudspeaker avoid exposing it to direct sunlight Do not install the unit near heat emitting appliances such as a room heater or stove This loudspeaker contains potentially hazardous voltages Do not attempt to disassemble the unit The unit contains no user serviceable parts Repairs should be performed only by factory trained service personnel Francais Pour r duire le risque d lectrocution d brancher la prise principale de l haut parleur avant d installer le cable d interface allant l audio Ne rebrancher le bloc d alimentation qu apr s avoir effectu toutes les connections Branchez l haut parleur dans une prise de courant 3 d rivations deux p les et la terre Cette prise doit tre munie d une protection ad quate fusible ou coupe circuit Le branchement dans tout autre genre de prise pourrait entrainer un risque d lectrocution et peut constituer une infraction la r glementation locale concernant les installations lectriques Ne pas installer l haut parleur dans un endroit o il y a de l eau ou une humidit excessive Ne pas laisser de l eau ou tout objet p n trer dans l haut parleur Ne pas placer de r cipients contenant un liquide sur cet appareil ni proximit de celui ci Pour viter une surchauffe de l haut parleur conserver la l abri du soleil Ne pas installer proximit d appareils d gageant de la chaleur tels que radiateurs ou appareils de chauffage C
15. specified by Meyer Sound or sold with the loudspeaker Handles are for carrying only CAUTION Rigging should only be done by experienced professionals 13 Unplug this loudspeaker during lightning storms or when unused for long periods of time 14 Refer all servicing to qualified service personnel Servicing is required when the loudspeaker has been damaged in any way such as power supply cord or plug is damaged liquid has been spilled or objects have fallen into the loudspeaker the loudspeaker has been exposed to rain or moisture does not operate normally or has been dropped 15 This loudspeaker provides protection against direct sprays of water up to 15 degrees from vertical Rating IP42 in accordance with IEC 60529 SAFETY SUMMARY English To reduce the risk of electric shock disconnect the loudspeaker from the AC mains before installing audio cable Reconnect the power cord only after making all signal connections Connect the loudspeaker to a two pole three wire grounding mains receptacle The receptacle must be connected to a fuse or circuit breaker Connection to any other type of receptacle poses a shock hazard and may violate local electrical codes Do not install the loudspeaker in wet or humid locations without using weather protection equipment from Meyer Sound Do not allow water or any foreign object to get inside the loudspeaker Do not put objects containing liquid on or near the unit To reduce the
16. to generate a wave front that interacts with that produced by the front facing high power 15 inch drivers The result is directional low frequency output to 35 Hz and a 25 dB reduction in sound level behind the cabinet Arrays of up to 16 cabinets M3D M3D Sub or a mixture of both having O to 5 of splay between adjacent units provide flexibility to tailor vertical coverage by varying the number and splay of cabinets in the array while maintaining 90 of usable horizontal coverage measured at the 6 db points To predict the coverage frequency response impluse response and maximum SPL output of arrayed M3Ds use MAPP Multipurpose Acoustical Prediction Program Online see Meyer Sound MAPP Online on page 18 MA3D Iine Arrav 1 Information and specifications are applicable as of the date of printing Updates and supplementary information are posted on the Meyer Sound web site at http www meyersound com or you may contact Meyer Sound Technical Support at Tel 510 486 1166 fax 510 486 8356 email techsupport meyersound com AC POWER When AC power is applied to the M3D or M3D Sub the Intelligent AC supply automatically selects the correct operating voltage allowing the loudspeakers to be used internationally without manually setting voltage switches The Intelligent AC supply performs the following protective functions to compensate for hostile conditions on the AC mains E suppresses high voltage t
17. 2 G ul gt 4 o ie l EM ag S x UJ a x EZ 9 o ok a a t 2 Ji t H Figure 22 Wiring diagram of a typical M3D installation Mever Sound ahoratories Inc M3 2N ine Arrav CABLING One method of cabling the system is using the Meyer Sound VEAM cable system This system incorporates power signal and RMS monitoring system all in one heavy duty cable and connector per M3D cabinet The electrical signal and RMS cables for each cabinet can be consolidated to create a three pair multi conductor cable This can be accomplished by using separate electrical and signal XLR cable The electrical signal and RMS cable for each box can be loomed together per box to create a three pair multi conductor cable for each cabinet This ensures no patching errors and a minimum of cables behind the array Two ring stud fittings are provided on the back panel of each M3D and M3D Sub for the purpose of strain relieving all cabling Insert the signal data and AC connections into each loudspeaker as the array is being rigged swag all cables under the rain hood s side flaps and tie them off onto either the left or right rings of the ring stud fitting as shown in Figure 23 Using the strain reliefs will minimize the chance of cables being damaged during installation of the sound system
18. 6 kHz Free field 4 dB 42 Hz 16 kHz 6 dB 35 Hz and 16 kHz Note Measured with 1 3 octave frequency resolution in fixed ISO bands at 4 meters Phase response 30 300 Hz 14 kHz Maximum peak SPL 145 dB Note Measured with 1 3 octave frequency resolution in fixed ISO bands at 4 meters Dynamic range 110 dB Horizontal coverage Low frequency Cardioid with active pattern control High frequency 90 Note MAPP Online data available Vertical coverage Vertical coverage varies depending on array length and configuration Acoustical crossover Transducers 580 Hz Note At this frequency the high and low frequency transducers produce equal sound pressure levels Low mid frequency front 2 each 15 inch diameter cone drivers with Neodynium Magnets Nominal impedance 4 ohms Voice coil size 4 inches Power handling capability 1200 W Note Power handling is measured under AES standard conditions transducer driven continuously for two hours with a band limited noise signal 125 Hz to 8 kHz having a 6 dB peak to average ratio Note To eliminate interference at short wavelengths the two front facing 15 inch drivers work in combination at low frequencies 35 Hz to 140 Hz At mid frequencies 140 Hz to 580 Hz only one driver is fed from the crossover to maintain optimal polar and frequency response characteristics Low mid frequency rear
19. OPERATING INSTRUCTIONS M3D Line Array Loudspeaker M3D Sub Directional Subwoofer ES Meyer MG Sound DECLARATION OF CONFORMITY ACCORDING TO ISO IEC GUIDE AND EN 45014 The Manufacturer Meyer Sound Laboratories Inc 2832 San Pablo Avenue Berkeley California 94702 2204 USA Declares that the product M3D M3D Sub Conforms to the following Product Specifications Safety EN60065 1998 IEC60065 1998 EMC EN55103 1 1997 emission 1 EN55103 2 1997 immunity 2 This device complies with the requirements of the Low Voltage Directive 73 23 EEC and the EMC Directive 89 336 EEC This device also complies with EN 55103 1 amp 2 Operation is subject to the following two conditions 1 this device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation COPYRIGHT 2002 Meyer Sound All rights reserved M3D Line Array Loudspeaker Operating Instructions Environmental Specifications For Meyer Sound Electronics Products Operating Temperature O C to 45 C Nonoperating Temperature 40 C or gt 75 C Humidity to 95 at 35 C Operating Altitude to 4600 m 15 000 ft Nonoperating Altitude to 6300 m 25 000 ft Shock 30g 11 msec half sine on each of 6 sides Vibration 10Hz to 55Hz 0 010m peak to peak excursion Made by Meyer Sound Laboratories 3K59 COMMERCIAL Berkeley California USA AUDIO S
20. Sound or an authorized service center If the voltage decreases below the lower boundary of either operating range brownout the supply uses stored energy to continue functioning briefly The unit turns off only if the voltage does not increase above the threshold before the storage circuits are depleted The time that the M3D or M3D Sub continues to operate during brownout depends on how low the voltage drops and on the audio source level during this period If the voltage fluctuates within either operating range automatic tap selection stabilizes the internal operating voltage This tap selection is instantaneous and there are no audible artifacts If the voltage increases above the upper boundary of either range the power supply rapidly turns off preventing damage to the unit If the M3D or M3D Sub shuts down due to either low or high voltage the power supply automatically turns on after three seconds if the voltage has returned to either normal operating range If the M3D or M3D Sub does not turn back on after ten seconds remove AC power and refer to the previous Caution note NOTE It is recommend that the supply be operated in the rated voltage windows at least a few volts away from the turn on off points so that small AC voltage variations do not cause the amplifier to cycle on and off CURRENT REQUIREMENTS The M3D or M3D Sub presents a dynamic load to the AC mains which causes the amount of current to fluctuate
21. TION Before applying AC to any Meyer N Sound self powered speaker be sure that the voltage potential difference between neutral and earth ground is less than 5 VAC Figure 3 shows a sample three phase AC distribution system with the load between speakers distributed among the three phases and all of the loudspeakers connected to common neutral and earth ground points Line 1 Line 2 Line 3 Neutral Earth Ground Figure 3 AC power distribution block diagram Voltage Requirements The M3D or M3D Sub operates safely and without audio discontinuity if the AC voltage stays within either of two operating windows 85 134 V or 165 264 V at 50 or 60 Hz Refer to Table 2 on page 20 for the M3D or Table 3 on page 23 for the M3D Sub for detailed AC voltage requirements After applying AC power the proper operating voltage is automatically selected but the system is muted During the next three seconds the following events occur 1 The primary fans turn on 2 The main power supply slowly ramps on 3 The green Active LED on the user panel lights up indicating that the system is enabled and ready to pass audio signals Maver Saind ahoratoaries Inc CAUTION If the Active LED does not N illuminate or the system does not respond to audio input after ten seconds remove AC power immediately Verify that the voltage is within the proper range If the problem persists please contact Meyer
22. YSTEM European Office Meyer Sound Lab GmbH C US LISTED Carl Zeiss Strasse 13 C 56751 Polch Germany Office of Quality Manager Berkeley California USA July 19 2002 The contents of this manual are furnished for informational purposes only are subject to change without notice and should not be construed as a commitment by Meyer Sound Laboratories Inc Meyer Sound assumes no responsibility or liability for any errors or inaccuracies that may appear in this manual Except as permitted by applicable copyright law no part of this publication may be reproduced stored in a retrieval system or transmitted in any form or by any means electronic mechanical recording or otherwise without prior written permission from Meyer Sound M3D TruPower RMS BroadbandQ MAPP Online and REM are trademarks of Meyer Sound SIM9 and QuickFly are registered trademarks of Meyer Sound Reg U S Pat amp Tm Off All third party trademarks mentioned herein are the property of their respective trademark holders Printed in the U S A Part Number 05 105 022 01 Rev A 08 02 SYMBOLS USED These symbols indicate Important safety or operating features in this booklet and on the chassis Dangerous voltages risk of electric Important operating instructions shock Frame or chassis Protective earth ground Pour indiquer les risques r sultant de tensions dangereuses instructions Pour indequer imp
23. bbon Emulation Manifold to feed a constant directivity horn from two Meyer manufactured compression drivers each having a 1 5 inch exit 4 inch diaphragm REM controls the output of the drivers and introduces it to the horn throat within a three inch path length dramatically minimizing distortion The unique M3D horn design produces a coherent wave front that is characteristic of but much more powerful than a large ribbon driver Vertical coverage is restricted to 10 5 and interaction is minimized yet distortion remains extremely low To ensure the smoothest response in the critical midrange the M3D incorporates a complex active crossover design At the lowest frequencies two front facing ferrofluid cooled back vented 15 inch drivers combine to reproduce powerful coherent bass These newly developed drivers feature lightweight neodymium magnet structures and are rated to handle 1200 AES watts Loudspeaker driven with a band limited noise signal 125 Hz to 8 kHz with 6 dB peak to average ratio for a period of 2 hours In the mid frequencies the crossover feeds only one of the two drivers This technique eliminates interference between the drivers that would otherwise occur at shorter wavelengths and maintains optimal polar and frequency response characteristics At mid and low frequencies the M3D employs a proprietary system of rear facing 15 inch cone drivers separately driven by a complex phase manipulation circuit
24. cs Maver Saind ahoratories Inc pocket top stifener pocket 1 ea side FRONT Figure 17 Rain hood stiffener pockets See Figure 18 for an example of an installed rain hood Figure 18 Fully open rain hood installed on a M3D CAUTION Always be sure the rain hood is fully open when operating an M3D Leaving the hood partially open will limit the airflow through the amplifier which could cause it to overheat and shut down M2N I ine Arrav 9 Removing the M3D M3D Sub Amplifier If you need to remove the M3D amplifier you must first remove the rain hood as follows 1 Using a 2 Phillips screwdriver remove all eight screws from the rain hood This will free both the rain hood and the HP 4 electronics module from the M3D cabinet Refer to Figure 19 Figure 19 Location of eight screws securing rain hood 2 Lift off the rain hood carefully pulling all eight screws through the panel 3 Carefully slide the amplifier out using care not to stress the cables 4 Disconnect the two 4 pin speaker connectors Replacing the M3D M3D Sub Amplifier When you replace the amplifier and rain hood on the M3D cabinet use the following procedure 1 Gently slide the amplifier partially back into the M3D and connect the 2 speaker connectors Make sure they are connected into the right connector Please refer to Figure 12 and Figure 13 2 Check to be sure that all three steel bars are correctly inserted
25. e haut parleur contient des circuits haute tension pr sentant un danger Ne jamais essayer de le d monter Il n y a aucun composant qui puisse tre r par par l utilisateur Toutes les r parations doivent tre effectu es par du personnel qualifi et agr par le constructeur Deutsch Um die Gefahr eines elektrischen Schlages auf ein Minimum zu reduzieren den Lautsprecher vom Stromnetz trennen bevor ggf ein Audio Schnittstellensignalkabel angeschlossen wird Das Netzkabel erst nach Herstellung aller Signalverbindungen wieder einstecken Der Lautsprecher an eine geerdete zweipolige Dreiphasen Netzsteckdose anschlie en Die Steckdose mu mit einem geeigneten Abzweigschutz Sicherung oder Leistungsschalter verbunden sein Der Anschlu der unterbrechungsfreien Stromversorgung an einen anderen Steckdosentyp kann zu Stromschl gen f hren und gegen die rtlichen Vorschriften versto en Der Lautsprecher nicht an einem Ort aufstellen an dem sie mit Wasser oder berm ig hoher Luftfeuchtigkeit in Ber hrung kommen k nnte Darauf achten da weder Wasser noch Fremdk rper in das Innere den Lautsprecher eindringen Keine Objekte die Fl ssigkeit enthalten auf oder neben die unterbrechungsfreie Stromversorgung stellen Um ein berhitzen dem Lautsprecher zu verhindern das Ger t vor direkter Sonneneinstrahlung fernhalten und nicht in der N he von w rmeabstrahlenden Haushaltsger ten z B Heizger t oder Herd aufstellen
26. en yellow neutral blue Figure 7 VEAM multipin connector power pin out For M3D or M3D Sub loudspeakers fitted with the VEAM multipin connector please refer to the Meyer Sound document VEAM Cable Wiring Reference part number 06 033 113 for the wiring conventions and pinouts for the AC audio and RMS connections Use the information in this document to create power cables and distribution systems Meyer Sound offers the VIM VEAM interface module to distribute power audio and RMS to M3D or M3D Sub systems fitted with VEAM connectors See Figure 8 Push to Reset 9 Self Powered Series OOO or Self Powered OOO Oo UltraSeries 000 Loudspeakers ol f y O o N o J Figure 8 VIM 3 module Mever Satind ahoratories Inc SAFETY ISSUES Pay close attention to these important electrical and safety issues CAUTION Do not use a power cord adapter to drive the M3D or M3D Sub from a standard three prong Edison outlet since that connector is rated for only 15 amps NEMA 5 15R 125 VAC max Figure 9 Do not use AC adapters CAUTION The M3D or M3D Sub requires a ground connection Always use a grounding outlet when connecting these units chassis ground Figure 10 Grounded outlet and plug WARNING Keep all liquids away from the M3D or M3D Sub amplifier to avoid haza
27. ente por parte del personal de mantenimiento capacitado en la f brica CONTENTS Introduction AC Power AC Power Distribution Voltage Requirements Current Requirements Power Connector Wiring Conventions Safety Issues Audio Input Amplification and Protection Circuitry M3D Interconnections M3D Sub Interconnections The TruPower Limiting System M3D TPL Limiters M3D Peak Limiter M3D Sub TPL Limiters M3D Sub Excursion Clamp Fans and Cooling System Using and Replacing the Rain Hood Opening the Rain Hood Removing the M3D M3D Sub Amplifier Replacing the M3D M3D Sub Amplifier How Do Line Arrays Work Hybrid Line Arrays Adjusting a Line Array s Coverage Cabling Using the M3D Sub With the M3D Line Array Loudspeaker Driving the M3D Sub SIMQ System Il Applications Measurement Modes and Features Meyer Sound MAPP Online RMS Remote Monitoring System Monitor Displays Appendix A M3D Line Array Specifications Appendix B M3D Sub Directional Subwoofer Specifications Contact Information OYO O 000009000 SS NN O Om Om GO QD FB N25 NS HS M ON OM LB RP LR ggg H LH nn HB ee OQ Go OD o D Go JJJ PP r raO OO S Meyer YE Sound INTRODUCTION The M3D Line Array is a part of the Meyer Sound M Series which is a fully integrated line of loudspeakers that brings singular advantages to real world applications The M3D Line Array shown in Figure 1 draws upon classic linear array principles and is a hybrid system using advanced
28. er AC power connector 250VAC NEMA L6 20 twistlock inlet or IEC 309 male inlet Optional VEAM connector integrates AC audio and network Voltage selection Automatic two ranges each with high low voltage tap uninterrupted Safety agency rated operating voltage 95 VAC to 125 VAC 208 VAC to 235 VAC 50 60 Hz Turn on turn off points 85 VAC 134 VAC 165 VAC 264 VAC Current Draw Idle current 1 2Arms 115 VAC O 6Arms 230 VAC 1 3ArmS 100 VAC Max long term continuous current 610 sec 18 Arms 115 VAC 9 Arms 230 VAC 20 Arms 280 VAC Burst current 1 sec 32 Arms 115 VAC 16 Arms 230 VAC 36Arms 100 VAC Note AC power cabling must be of sufficient gauge so that under burst current conditions cable transmission losses do not drop voltage below specified operating range at the speaker Ultimate short term peak current draw 50 A pk 115 VAC 25 A pk 230 VAC 57 A pk 100 VAC Inrush current RMS Network lt 12 A at 115 VAC Equipped for simple two conductor twisted pair network reporting all operating parameters of amplifiers to operator s host computer Physical Enclosure Multi ply hardwood Finish Black textured weather protected Note Custom color available upon request Protective grill Powder coated hex stamped steel Rigging QuickFly MRF 3D rigging frame with integral CamLinks rear connecting bars and captive qu
29. er works For high frequencies the M3D takes advantage of the control that wave guide horns provide In the horizontal pattern of the array these horns work just as any wave guide does to produce a consistent beamwidth of coverage In the vertical however the REM is designed to produce very narrow coverage in order to minimize destructive interference between adjacent elements and maximize throw As more elements are arrayed ina eight M3Ds sixteen M3Ds 250 Hz eight M3Ds sixteen M3Ds 125 Hz vertical column they throw high frequency energy more effectively through coupling The amount of energy can then be controlled using the relative splay between the elements For the mid to low frequencies it s important to understand that even though the M3D s Broadband Q technology will maintain front to back attenuation from 580 Hz down to 35 Hz line arrays must be coupled together to narrow their vertical polar response and throw mid and low energy to the far field The more elements used the narrower the vertical beamwidth becomes See Figure 20 Figure 20 Eight versus sixteen M3D line arrays Adjusting a Line Array s Coverage The most effective method for adjusting a hybrid line array s vertical coverage is to adjust the mechanical splay between the elements Horizontal coverage for a single array is constant Narrower vertical splay angles Maver Saind ahoratories Inc produce a higher Q vertica
30. ers The 18 inch front low frequency drivers are driven by separate amplifier channels but are fed by one limiter the LO TPL F LED on the user panel indicates TPL activity for these drivers The rear 15 inch drivers are connected in parallel and driven by a single amplifier channel that is fed by one limiter the Rear TPL LED on the user panel indicates TPL activity for the rear drivers The limiters cease operation when the power level returns to normal and do not affect the signal when the LED is inactive M3D Sub Excursion Clamp The drivers in the M3D Sub are protected by an excursion clamping circuit that provides instantaneous braking for the drivers without the pumping effects commonly produced by compressor limiters Figure 15 M3D Sub limit LEDs The circuit uses sophisticated filters to minimize the distortion normally caused by clamping and clipping As the M3D Sub s input signal is increased past the clamping point at each frequency the output signal remains at a R MAD I ine Arrav fixed level for that frequency protecting the drivers and minimizing negative sonic effects The LED shown in Figure 15 illuminates when the maximum allowed peak voltage at each frequency is reached This circuit works for all frequencies not just very low frequencies where the drivers are more vulnerable overexcursion The M3D Sub operates safely if the Exc Clamp LED is on for no longer than two seconds
31. ervice amperage required by a system of M3D or M3D Subs is the sum of their maximum continuous RMS current We recommend allowing an additional 30 above the minimum amperage to prevent peak voltage drops at the service entry CAUTION In the unlikely event that the N circuit breakers trip the white center buttons pop out disconnect the AC power cable Do not reset the breakers with the AC connected Contact Meyer Sound for repair information Power Connector Wiring Conventions The M3D or M3D Sub requires a grounded outlet It is very important that the system be properly grounded for both safety and proper operation Use the following wiring diagram to create power cables and distribution systems M2N I ine Arrav gt 3 WARNINGS THIS PRODUCT MUST BE GROUNDED is surface may reach high tempuratures white in use This s Ti ti GROUND GREEN YELLOW Co Ton ACHTUNG GEH USE NICHT OFFENE WARTUNG UND REPARATUR NUR ATTENTION ENTRETIENET REPARATIONS Figure 4 M3D user rear panel with L6 20 power connector WARNINGS THIS PRODUCT MUST BE GROUNDED is surface may reach high tempuratures white in use i low at least GROUND GREENYELLOW s M3D Sub O Front Exc O Front TPL O Rear Exc Q Rear TPL O Active Figure 5 M3D Sub user rear panel with L6 20 power connector A M amp S amp N line Arrav neutral blue line brown ground green yellow line brown ground gre
32. ferential between pins 2 and 3 Wiring Pin 1 Chassis earth through 220k ohm 1000 pF 15 V clamp network to provide virtual ground lift at audio frequencies Pin 2 Signal Pin 3 Signal Case Earth ground and chassis CMRR 50 dB typically 80 dB 50 Hz 500 Hz RF filter Common mode 425 kHz Differential mode 142 kHz TIM filter 80 kHz integral to signal processing Input level Audio source must be capable of producing a minimum of 20 dBV 10 Vrms 14 Vpk into 600 ohms in order to produce maximum peak SPL over the operating bandwidth of the speaker Nominal input sensitivity Amplifiers Amplifier type O dBV 1 Vrms 1 4 pk continuous is typically the onset of TPL limiting for noise and music Complementary power MOSFET output stages class AB H based on 95 Vpk into 4 ohms Output power 4500 watts 1125 watts channel xfour channels Note Amplifier wattage rating is based on the maximum unclipped burst sine wave RMS voltage the amplifier will produce into the nominal load impedance in this case 67 Vrms 95 Vpk into 4 ohms THD IM TIM lt 02 Load capacity Cooling AC Power 4 ohms minimum impedance each channel Forced air cooling four fans total two ultra high speed reserve fans AC power connector 250VAC NEMA L6 20 twistlock inlet or IEC 309 male inlet Optional VEAM connector integrates AC audio and network Voltage selection Automatic two range
33. he source material and thermal variations in the speaker s voice coil and magnet Conventional limiters begin limiting prematurely which under utilizes system headroom and deprives the speaker of its full dynamic range The TruPower Limiting TPL system accounts for varying speaker impedance by measuring current in addition to voltage to compute the actual power dissipation in the voice coil TPL improves performance before and during limiting by allowing each driver to produce its maximum Maver Saind ahoratories Inc SPL across its entire frequency range TPL extends the lifetime of the drivers by controlling the temperature of the voice coil In addition TPL eliminates power compression when the system is operated at high levels for extended periods The true power is monitored for each of the four amplifier channels When the safe continuous power level is exceeded the TPL limiter controlling that amplifier channel engages TPL activity is indicated by the LEDs on the user panel The M3D and M3D Sub perform within their acoustical specifications and operate at a normal temperature if the limit LEDs are lit for no longer than two seconds and off for at least one second If either LED remains on for longer than three seconds that channel is hard limiting with the following negative consequences E Increasing the input level will not increase the volume m The system distorts due to clipping and nonlinear driver operation
34. ick release pins Weather protection Standard Dimensions 24 M32N ine Arrav 54 W x 20 H x 30 5 D 1372 mm x 508 mm x 762 5 mm Maver Saind ahoratories Inc Table 3 M3D Sub Directional Subwoofer continued Ad Ca f Y 20 00 508mm Nw WY 10 00 254mm 8 50 216mm 30 50 775mm 1295mm 54 00 1372mm Figure 31 M3D Sub Directional Subwoofer physical dimensions Weight Net 395 Ibs 179 kg Shipping weight Net 480 Ibs 219 Kgs Safety Agency Recognitions CE Compliant UL Listed IEC 60065 1998 Compliant Mever Sound ahoratories Inc M32N line Arrav 2h Y Meyer ll Sound CONTACT INFORMATION Meyer Sound Laboratories Inc 2832 San Pablo Avenue Berkeley CA 94702 tel 510 486 1166 fax 510 486 8356 e mail techsupport meyersound com http www meyersound com Part Number 05 105 022 01 Rev A 08 02
35. ing applied to each zone in the high frequencies This is also why gain tapering is not recommended for line arrays Adjusting the various zones with an overall amplitude control for each zone results in the following 1 Directionality decreases 2 Overall low frequency headroom decreases 3 The length of the line array column is effectively shortened The following is a sample M3D system block diagram showing one method of driving an array along with additional fill loudspeakers and subwoofers Digital delays are included to provide a time adjustment to compensate for the various subsystems and subwoofers being geometrically out of plane with one another Mever Saind ahoratories Inc X 4 M3D SUB RIGHT CLUSTER 8 M3D R SUBWOOFERS aiu PER SIDE DOWNFILLS 3 MSL 4 FRONT FILLS 10 UPM 1P
36. input with male XLR loop output Input impedance 10k ohms differential between pins 2 and 3 Wiring Pin 1 Chassis earth through 220k ohm 1000 pF 15 V clamp network to provide virtual ground lift at audio frequencies Pin 2 Signal Pin 3 Signal Case Earth ground and chassis CMRR gt 50 dB typically 80 dB SO Hz 500 Hz RF filter Common mode 425k Hz Differential mode 142 kHz TIM filter 80 kHz integral to signal processing Input level Audio source must be capable of producing a minimum of 20 dBV 10 Vrms 14 V pk into 600 ohms in order to produce maximum peak SPL over the operating bandwidth of the speaker Nominal input sensitivity Amplifiers O dBV 1 Vrms 1 4 pk continuous average is typically the onset of TPL limiting for noise and music Amplifier type Complementary power MOSFET output stages class AB H based on 95 Vpk into 4 ohms Output power 4500 watts 1125 watts channel four channels Note Amplifier wattage rating is based on the maximum unclipped burst sine wave RMS voltage the amplifier will produce into the nominal load impedance in this case 67 Vrms 95 V pk into 4 ohms THD IM TIM lt 02 Load capacity Maver Saind ahoratories Inc 4 ohms minimum impedance each channel MAD ine Arrav 73 Table 3 M3D Sub Directional Subwoofer continued Cooling Forced air cooling four fans total two ultra high speed reserve fans AC Pow
37. io signal In the event that the heatsink temperature reaches 74 C the secondary fans turn on and are clearly audible without an audio signal The secondary fans turn on in response to E primary fan failure check status immediately m high source levels for a prolonged period E accumulation of dust along the cooling path The secondary fans turn off when the temperature decreases to 68 C NOTE In the highly unlikely event that the secondary fans do not keep the temperature below 85 C the M3D automatically shuts down until AC power is removed and reapplied If the M3D shuts down again after cooling and reapplying AC power contact Meyer Sound for repair information USING AND REPLACING THE RAIN HOOD The rain hood installed on the M3D user panel is provided to protect the loudspeaker s electronics from direct exposure to rainfall Before using the M3D open the rain hood as described in the following procedure Opening the Rain Hood 1 Pull the exterior Velcro straps off the hood allowing it to open 2 Lift the flap fully outward and unfold the fabric rain hood 3 With your other hand reach into the hood and free the two PVC supports from their corner pockets in the outer flap 4 Fold both supports out and reinsert them into the two pockets shown in Figure 17 in the lower corners of the soft side flaps This will hold the rain hood fully open for use which is necessary for proper cooling of the M3D electroni
38. ition or other location RMS software delivers extensive status and system performance data directly to the operator from every installed speaker RMS displays include amplifier voltages limiting activity power output temperature fan and driver status warning alerts and other key data for up to sixty two speakers without a network repeater at a display update rate of two to five times per second More information is available and with greater convenience than from conventional monitor systems The RMS Monitor Program interface can be learned quickly and runs in a Microsoft Windows 95 or Windows 98 2nd Edition environment Monitor Displays Each speaker appears on the computer s color monitor as a view in the form of a status icon bar graph meter or text meter numerical values depending on user preference Each view contains speaker identification information and data from the amplifier controller driver and power supply of that particular unit System status conditions cause changes in Icon and bar graph indicators alerting the operator to faults or excessive levels The views are moveable and typically are arranged on the screen to reflect the physical layout of the loudspeakers A user can design a screen panel of icons or meters as shown in Figure 29 and save it on the computer s hard disk conveniently named for a unique arrangement or performer If the speaker installation pattern changes completely a new sc
39. l beamwidth while wider splay lowers the Q The following is a case example showing a design where this principle is applied to a sloped outdoor venue M2N Line Arrav 11 Figure 21 Using vertical splay to adjust a line array s coverage With these two technologies low frequency line array and high frequency wave guide combined in a single product it s important to understand how to best electronically drive a hybrid line array The high frequency section can and usually should be zoned for implementing different equalization into zones The first step is to optimize the coverage using the relative mechanical splay between the array s elements MAPP Online is an ideal tool for doing this and determining what will work best for the application MAPP can also help to determine how to break up the electronic drive of the system using its Virtual SIM feature For the far field a smaller mechanical splay angle achieves superior throw to compensate for energy lost over distance While wave guides provide isolated control over various coverage areas the low frequency section of a line array still requires mutual coupling with equal amplitude and phase to achieve a narrow beamwidth This is important to remember when optimizing the array 12 MAD line Arrav with multiple equalization channels It is best to maintain a similar or identical equalization in the low frequency filters even though different equalization is be
40. lowest frequencies This can be very useful in applications that require large amounts of low frequency energy such as the reinforcement of popular music Both the M3D Line Array and the M3D Sub have a cardioid directional pattern and are designed to provide maximum cancellation from six to twelve meters behind the cabinet 20 dB at 8 meters When they are used together in addition to increased forward power the rear power cancellation also improves Driving the M3D Sub All Meyer Sound products have been optimized with internal crossover networks When most Meyer Sound loudspeakers are used together these networks provide maximum power addition through their respective overlapping frequency ranges when used in close proximity and co planar to one another You may loop connections between the M3D Line Array and the M3D Sub This will result in 6 dB greater sound pressure in the 40 Hz to 100 Hz range as shown in Figure 24 a ground plane measurement taken at six meters Maver Saind ahoratories Inc TES BET te lu m SEA flee Slee fl fa ru Lu ai l H3D M3D Sub TH 2a GU au LE When the two are driven with the same signal but the M3D Sub is attenuated by 6 dB the response is identical M3D M3D Sub M3C Alone CR ee mu ru SET cu Figure 24 M3D Line Array and M3D Sub with looped connections to the M3D Line Array alone but extends to 30 Hz as shown in Figure 25 SIM cee EE Zen ge
41. ortant Masse ch ssis Terre de protection Zu die gefahren von gef hrliche spanning zeigen Zu wichtige betriebs anweisung und unter haltsanweisung zeigen Rahmen oder chassis Die schutzerde Para indicar voltajes peligrosos IMPORTANT SAFETY INSTRUCTIONS Read these instructions Keep these instructions Heed all warnings Follow all instructions Do not use this loudspeaker near water Clean only with dry cloth Sr Ze GE Ae DX e ges Do not block any ventilation openings Install in accordance with Meyer Sound s installation instructions 8 Do not install near any heat sources such as radiators heat registers stoves or other apparatus that produce heat 9 Do not defeat the safety purpose of the grounding type plug A grounding type plug has two blades and a third grounding prong The third prong is provided for your safety If the provided plug does not fit into your outlet consult an electrician for replacement of the obsolete outlet 10 Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles and the point where they exit from the loudspeaker The AC mains plug or appliance coupler shall remain readily accessable for operation Instrucciones importantes de funcionamiento y o manteniento Armadura o chassis Tierra proteccionista 11 Only use attachments accessories specified by Meyer Sound 12 Use only with the caster rails or rigging
42. peakers W Clearly see interactions among loudspeakers and minimize destructive interference m Place microphones anywhere in the sound field and predict the frequency response impulse response and sound pressure at the microphone position m Refine your system design to provide the best coverage of the intended audience area m Useavirtual VX 1 Program Equalizer to predetermine the correct control settings for best system response E Gain valuable load information about the array to determine rigging capacities MAPP Online enables sound system designers to come to an installation prepared with a wealth of information that ensures the system will satisfy their requirements out of the box including basic system delay and 18 M amp N line Arrav equalization settings Its accurate high resolution predictions eliminate unexpected onsite adjustments and coverage problems With MAPP Online every sound system installation has the maximum chance of success MAPP Online is compatible with Windows Linux Unix and Apple Macintosh computers running Mac OS X version 10 1 2 or higher MAPP Online requires Java Web Start version 1 0 1 02 included with Mac OS X RMS REMOTE MONITORING SYSTEM Once an installation is complete use Meyer Sound s RMS system to monitor system performance RMS is a real time monitoring system that connects the Meyer Sound self powered speakers with an IBM compatible computer at the sound mix pos
43. ransients up to several kilovolts m filters common mode and difference mode radio frequencies EMI E sustains operation temporarily during low voltage periods E provides soft start power up which eliminates high inrush current Refer to Table 2 on page 20 of Appendix A for a complete listing of power requirements and specifications for the M3D Line Array or Table 3 on page 23 for the power requirements and specifications for the M3D Sub Directional Subwoofer The M3D or M3D Sub can withstand continuous voltages up to 275 V and allows any combination of voltage to GND that is neutral line ground or line line ground CAUTION Continuous voltages higher than 275 V can damage the unit The M3D or M3D Sub uses a NEMA L6 20P an IEC 309 or a multipin VEAM male power connector and satisfies worldwide product safety standards AC Power Distribution All amplifier modules and the rest of the audio equipment connected to it mixing consoles processors etc must be connected to the AC power distribution in a proper 2 M3Nn Line Arrav way preserving AC line polarity and connecting earth ground such that all grounding points are connected to a single node or common point using the same cable gauge as the neutral and line s cables Bad grounding connections between speakers and the rest of the audio system may produce noise hum and or serious damage to the input output stages in the system s electronic equipment CAU
44. rds from electrical shock Please refer to the section Using and Replacing the Rain Hood on page 9 CAUTION Do not operate the unit if the power cables are frayed or broken Maver Saind ahoratories Inc the amplifier on the M3D or M3D Sub to provide strain relief for the power and signal cables d TIP Use the rings located in the rear above AUDIO INPUT The M3D or M3D Sub presents a 10k ohm balanced input impedance to a three pin XLR connector with the following connectors E Pin 1 220k ohm to chassis and earth ground ESD clamped Pin 2 Signal Pin 3 Signal Case Earth AC ground and chassis CAUTION Shorting an input connector pin to the case can form a ground loop and cause hum Pins 2 and 3 carry the input as a differential signal pin 2 is hot relative to pin 3 resulting in a positive pressure wave when a positive signal is applied to pin 2 Use standard audio cables with XLR connectors for balanced signal sources Make sure that pin 1 shield is always connected on both ends of the cable Telescoping grounding schemes are not recommended TIP If abnormal noises such as hiss and Y popping are produced by the loudspeaker disconnect the audio cable from the speaker If the noise stops then most likely the problem is not with the loudspeaker Check the audio cable source and AC power for the source of the problem Audio signals can be daisy chained using the loop o
45. reen panel can be built If a different subset of already installed speakers is to be used at the next show only selected speakers need appear on the monitoring screen for that performance Maver Saind ahoratories Inc a1 Molo Sytem Panel Dee Add Wew phans Dep Gira FOH 3737 O Swav Moa 3 15 Miles FOH 27 27 D Miles MON 8 14 EN vu Luz as ee FT wel A3 Fan s rode RER BU EH 3 iiaa pol E 1 spas i EL 417 pie Bion line we 6 Wea pn e mal dose high Terpeuskum EI url s Ee wp uem i pe Ic Tue XL i nme be Ae NOH e el mali Fari upon 72 Vpk 108 za siva 187 wpk prias 100 X 15 Wave Lo Syme veel Steg mente reed kwr supply ear Front K n 28 wkl 104 ee 56 we 395 WE pk ins ox 3 van EN Hin os En kas i EE ee ox 1 vex inii in hgt Tareciabure EE ow ru TW arel SEE a lee 1 tM 2 onz EN Be AHA A 3 Wewe 0 3 Liew liic 11re Polarity 2 Muting Disabled 76 off Speakers Ondine am SEO E Te goe Dees Arm Horinen T Remote Men IE ern Figure 29 Sample RMS display panel Mever Sound ahoratories Inc M2N Line Arrav 19 APPENDIXA M3D LINE ARRAY SPECIFICATIONS Table 2 M3D Line Array Specifications Acoustical Note The low frequency power response of the system will increase according to the length and configuration of the array Operating frequency range 35 Hz to 1
46. riven with a full range signal SIM SYSTEM Il SIM System Il is a powerful compact instrumentation product line comprising the SIM 2201 Sound Analyzer SIM 2403 Interface Network and a selection of software options microphones and accessory cables The instrument is optimized for making audio frequency measurements of an acoustical system and applying precise electronic corrections to adjust the system response SIM System Il implements the Meyer Sound Source Independent Measurement technique a dual channel method that accommodates statistically unpredictable excitation signals Any excitation signal that encompasses the frequency range of interest even intermittently may be employed to obtain highly accurate measurements of acoustical or electronic systems For example concert halls and loudspeaker systems may be characterized during a musical performance using the program as the test signal Housed in a four space rack mountable industrial chassis the SIM 2201 Sound Analyzer performs 32 bit floating point audio signal measurements with 100 dB dynamic range actual input signal range is greater because of selectable gain The instrument permits two port measurements between any two of three front panel inputs one microphone with switchable phantom power two isolated line level and incorporates a rear panel multipin interface for automated measurements of two channel systems Optional hardware and software upgrades pe
47. rmit up to sixty four analysis channel capacity Maver Saind ahoratories Inc Applications You can use the SIM System Il in the following applications Loudspeaker system testing and alignment Microphone calibration Architectural acoustics Transducer evaluation and correction Echo detection and analysis Vibration analysis Underwater acoustics Measurement Modes and Features Measurement data may be displayed as amplitude versus time impulse response or amplitude and phase versus frequency frequency response A single channel spectrum mode is provided and frequency domain data are displayed with a logarithmic frequency axis A Delay Finder function determines and internally compensates for propagation delays The SIM 2201 incorporates a front panel controllable precision signal generator with low distortion sine wave pink noise and modulated weighted pulse outputs multi segment level meters for each measurement input a removable hard disk and DOS format 1 44 Mbyte floppy disk drive for data storage high resolution color monitor output and dedicated rear panel multipin system interface connectors A headphone output is provided for aural monitoring of the measurement inputs User friendly software with pull down menus streamlines operation and measurement data may be exported to disk in ASCII format for post processing or laser printed for presentation M32N line Arrav 17 MEYER SOUND MAPP ONLINE
48. s each with high low voltage tap uninterrupted Safety agency rated operating voltage 95 VAC 125 VAC 208 VAC to 235 VAC 50 60 Hz Turn on turn off points 85 VAC 134 VAC 165 VAC 264 VAC Current Draw Idle current 1 2A RMS 115 VAC 0 6A RMS 230 VAC 1 3A RMS 100 VAC Max long term continuous current 610 sec Maver Saind ahoratories Inc 18 A RMS 115 V 9 A RMS 230 V 20 A RMS 280 V M32N line Arrav gt 71 Table 2 M3D Line Array Specifications continued Burst current 1 sec 32 A RMS 115 V 16 A RMS 230 V 36A RMS 100 V Note AC power cabling must be of sufficient gauge so that under burst current conditions cable transmission losses do not drop voltage below specified operating range at the speaker Ultimate short term peak current draw 50 A pk 115 VAC 25 A pk 230 VAC 57 A pk 100 VAC Inrush current RMS Network 12 A at 115 VAC Equipped for simple two conductor twisted pair network reporting all operating parameters of amplifiers to operator s host computer Physical Enclosure Multi ply hardwood Finish Black textured weather protected Note Customer color available upon request Protective grill Powder coated Hex stamped steel Rigging QuickFly MRF 3D rigging frame with integral CamLinks rear connecting bars and captive quick release pins Weather protection Standard Dimensions
49. the sound wavelength grows shorter its directivity narrows and above about 2 kHz it becomes too beamy for most applications This is why practical system designs employ crossovers and multiple elements to achieve more or less consistent directivity across the audio band Stacking two of these speakers one atop the other and driving both with the same signal results in a different radiation pattern At points on axis of the two there is constructive interference and the sound pressure increases by 6 dB relative to a single unit At other points off axis path length differences produce cancellation resulting in a lower sound pressure level In fact if you drive both units with a sine wave there will be points where the cancellation is complete this is best demonstrated in an anechoic chamber This is destructive interference sometimes referred to as combing A line array is a line of woofers carefully spaced so that constructive interference occurs on axis of the array and destructive interference combing is aimed to the sides While combing has traditionally been considered undesirable line arrays use combing to work without combing there would be no directivity Maver Saind ahoratories Inc HYBRID LINE ARRAYS The M3D is a high powered BroadbandQ loudspeaker system In order to effectively array drive and optimize a system to produce optimal results it s important to understand how a hybrid line array loudspeak
50. ull range signals may be applied to Meyer self powered subwoofers because they have built in active crossovers that filter mid hi frequencies external crossovers are unnecessary MAD Iine Arrav 15 ALL POLARITY SETTINGS FOR LD 1A amp LOUDSPEAKERS REMAIN THE SAME DS 2 amp Sub Crossover IN DS 2 OUTPUT 4 a EH NH AL ae Ng MID HI OUTPUT LOW CUT OUT ARRAY EQ OUT M3D Sub Figure 26 M3D and M3D Sub headroom optimization using an LD 1A line driver Figure 27 shows an LD 2 line driver configured to in Figure 26 The comparison plot when using these produce the same results as the LD 1A line driver shown configurations is shown Figure 28 LEFT CHANNEL peceat Master D HE e Misi Hi A Mid Bass er AUX Sue MID BASS amp Sub ale Sex m om Tm deat 3 3 3 3 13 Sub 8 E ma WIR VATES 3 3 L gt SE Dart 12 Keng gt e SC abend 12 7 Se Le Cut amp Array ER eg t oO ute LITE Mute amp Sub Crassev ALL POLARITY SETTINGS FOR LD 2 amp LOUDSPEAKERS REMAIN THE SAME MID BASS OUTPUT MID HI OUTPUT LOW CUT OUT ARRAY EQ OUT N M3D Sub Figure 27 M3D and M3D Sub headroom optimization using an LD 2 line driver 16 MAD I ine Arrav Mever Saind ahoratories Inc AH MAFI T tfr de j a Ell Jk CR IA kb Ti sm slat unh MID KIK Mab Alone PR SES Saz EG Figure 28 M3D driven from the mid bass output of LD 1 line driver with the M3D Sub d
51. utput connector on the user panel of the M3D or M3D Sub A single source can drive multiple M3Ds or M3D Subs with a paralleled input loop creating an unbuffered hard wired loop connection When driving multiple M3Ds or M3D Subs in an array make certain that the source device can drive the total load impedance presented by the paralleled input circuit of the array The audio source must be capable of producing a minimum of 20 dBV 10 Vrms into 600 ohms in order to produce the maximum peak SPL over the operating bandwidth of the loudspeaker MA3D Iine Arrav 5 CO HI Peak HI TPL L0 TPL F LF TPL R CO Active audio input loop out Figure 11 M3D rear panel audio input connectors The input impedance for a single M3D or M3D Sub is 10k ohms if n represents the number of M3D or M3D Sub loudspeakers in an array paralleling the inputs of n M3Ds or M3D Subs will produce a balanced input load of 10k ohms divided by n To avoid distortion from the source make sure the source equipment provides an adequate drive circuit design for the total paralleled load impedance presented by the array Most source equipment is safe for driving loads no smaller than ten times the source s output impedance For example cascading an array of ten units consisting of M3Ds and M3D Subs produces an input impedance of 1000 ohms 10k ohms divided by 10 The source equipment should have an output impedance of 100 ohms or less
52. wered by one channel of the HP 4 M3D amplifier While both rear 8 ohm 15 inch low frequency drivers are connected in parallel and driven by a single amplifier channel The two 4 inch diaphragm high frequency drivers share the fourth channel of the HP 4 amplifier Refer to Figure 12 on page 6 to see how the drivers are connected to the amplifier in the M3D Right Front MS 415N ve ann Left Front MS 415N Low mid Left Rear MS 815 Positions are in reference to front of enclosure Figure 12 M3D internal wiring harness diagram Maver Saind ahoratories Inc M3D Sub Interconnections Each front 4 ohm 18 inch low frequency driver is powered by one channel of the HP 4 M3D Sub amplifier also each rear 8 ohm 15 inch low frequency driver is powered by one amplifier channel Figure 13 shows how the drivers are connected to the amplifier in the M3D Sub Left Front MS 418 N Right Front MS 418 N Right Rear MS 815 Left Rear MS 815 Fans Upper Control Card Front 24 033 042 32 Eee Lower Control Card Rear 24 033 042 31 M3D Sub HP Amplifier Chassis Top View User Panel Figure 13 M3D Sub internal wiring harness diagram THE TRUPOWER LIMITING SYSTEM Conventional limiters assume that the impedance of a speaker remains constant and set the limiting threshold by measuring voltage only This method is inaccurate because the speaker s impedance changes in response to the frequency content of t
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