Page 2 - Supplementary Information; Office of Quality Manager; COPYRIGHT
ii DECLARATION OF CONFORMITY ACCORDING TO ISO/IEC GUIDE 22 AND EN 45014 Manufacturer's Name: Meyer Sound Laboratories Inc. Manufacturer's Address: 2832 San Pablo AvenueBerkeley, CA 94702-2204, USA Declares that the products Product Name: M2D and M2D-Sub Loudspeakers Product Options: All Safety: IEC ...
Page 3 - SYMBOLS USED
iii SYMBOLS USED These symbols indicate important safety or operating features in this booklet and on the chassis: 1 Read these instructions. 2. Keep these instructions. 3. Heed all warnings. 4. Follow all instructions. 5. Do not use this loudspeaker near water. 6. Clean only with dry cloth. 7. Do n...
Page 4 - English; SAFETY SUMMARY
iv 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 con...
Page 5 - CONTENTS; INTRODUCTION
v CONTENTS INTRODUCTION 1 How to Use this Manual 1 Introducing the M2D and M2D-Sub Loudspeakers 1 CHAPTER 1: Power Requirements 3 AC Power 3 AC Power Distribution 3 Power Connector Wiring 4 Voltage and Current Requirements 5 M2D Voltage Requirements 5 M2D Current Requirements 5 M2D-Sub Voltage Requi...
Page 7 - HOW TO USE THIS MANUAL; NOTE; INTRODUCING THE M2D AND M2D-SUB
1 INTRODUCTION HOW TO USE THIS MANUAL As you read this manual, you’ll find figures and diagrams to help you understand and visualize what you’re reading. You’ll also find numerous icons that serve as cues to flag important information or warn you against improper or potentially harmful activities. T...
Page 9 - AC POWER; AC Power Distribution; CHAPTER 1: POWER REQUIREMENTS
3 CHAPTER 1 The M2D and M2D-Sub loudspeakers represent advanced technology with equally advanced power capabilities. Understanding power distribution, voltage and current requirements, as well as electrical safety issues, is critical to their safe operation and deployment. AC POWER The M2D and M2D-S...
Page 10 - Continuous voltages higher than; Power Connector Wiring
4 CHAPTER 1 5 CHAPTER 1 Figure 1.4 shows a sample three-phase AC distribution system, with the load between loudspeakers distributed among the three phases and all of the loudspeakers connected to common neutral and earth ground points. Figure 1.4. A sample AC power distribution block diagram CAUTIO...
Page 11 - VOLTAGE AND CURRENT REQUIREMENTS; maximum long-term continuous current
4 CHAPTER 1 5 CHAPTER 1 VOLTAGE AND CURRENT REQUIREMENTS M2D Voltage Requirements The M2D loudspeaker operates safely and without audio discontinuity if the AC voltage stays within the operating window of 90 to 265 volts AC, at 50 to 60 Hz. The M2D can withstand continuous voltages up to 265 Volts a...
Page 12 - M2D-Sub Voltage Requirements
6 CHAPTER 1 7 CHAPTER 1 M2D-Sub Voltage Requirements The M2D-Sub loudspeaker operates safely and without audio discontinuity if the AC voltage stays within either of two operating windows at 50 or 60 Hz: 85 to 134 volts 165 to 264 volts CAUTION: Continuous voltages higher than 264 volts can dama...
Page 15 - AUDIO INPUT; Ensure that all cabling carrying; CHAPTER 2: AMPLIFICATION AND AUDIO
9 CHAPTER 2 The M2D and M2D-Sub loudspeakers use sophisticated amplification and protection circuitry to produce consistent and predictable results in any system design. This chapter will help you understand and harness the power of the M2D and M2D-Sub amplifier and audio systems. The rear panels of...
Page 16 - M2D INTERCONNECTIONS
10 CHAPTER 2 11 CHAPTER 2 When driving multiple loudspeakers 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 dB volts (10 volts rms into 600 ohms)...
Page 17 - Increasing the input level will not increase the volume.; M2D AMPLIFIER COOLING SYSTEM; All Meyer Sound loudspeakers
10 CHAPTER 2 11 CHAPTER 2 � � ���� �������� ��� �� ��� ��� �� ��� �� �� ��� �� �� ������� Figure 2.4. The M2D loudspeaker’s limit LED indicators If the limit LEDs are on for no longer than two seconds, and off for at least one second, the M2D loudspeaker is performing within its acoustical specifica...
Page 18 - M2D-SUB AMPLIFICATION; M2D-Sub Excursion Clamp
12 CHAPTER 2 13 CHAPTER 2 M2D-SUB AMPLIFICATION The M2D-Sub loudspeaker is powered by the Meyer Sound HP-2/M2D-Sub amplifier, a high-power two-channel amplifier. The amplifier utilizes complementary MOSFET output stages (class AB/H) capable of delivering 2250 watts total. All the specific functions ...
Page 19 - M2D-SUB AMPLIFIER COOLING SYSTEM
12 CHAPTER 2 13 CHAPTER 2 M2D-SUB AMPLIFIER COOLING SYSTEM The M2D-Sub loudspeaker uses a forced-air cooling system with two fans to prevent the amplifier module from overheating. The fans draw air in through ducts on the front of the cabinet, over the heatsink, and out the rear of the cabinet (Figu...
Page 21 - Optional Speaker Mute and Solo; UNDERSTANDING THE RMS USER PANEL; The following sections describe their functions.; CHAPTER 3: RMS REMOTE MONITORING SYSTEM
15 CHAPTER 3 The M2D and M2D-Sub loudspeakers are fitted standard with an RMS communication module installed in the rear of the loudspeaker. The RMS real-time networked monitoring system connects Meyer Sound self-powered loudspeakers with a Windows-based PC at the sound mix position or other remote ...
Page 22 - Service Button; The LEDs and buttons on; USER INTERFACE; For more information on RMS, please
16 CHAPTER 3 Service Button Pressing the Service button will display an icon on the corresponding loudspeaker display icon on the RMS screen. When used in combination with the Reset button, the communications module will be decommissioned from the network and the red Service LED will blink. Wink LED...
Page 23 - HOW LINE ARRAYS WORK; Maximize coupling to throw longer distances; Mid to Low Frequencies; Number of Array Elements; CHAPTER 4: LINE ARRAYS AND SYSTEM INTEGRATION
17 CHAPTER 4 A line array, in the most basic sense, is a group of closely spaced loudspeakers arrayed in a straight line, operating with equal amplitude and in phase. Although line arrays have been used since the 1950s, line array systems that provide full bandwidth directivity are relatively new to...
Page 24 - Horizontal Coverage; High-Frequency Design Strategies; High-Frequency Equalization Strategies
18 CHAPTER 4 19 CHAPTER 4 Horizontal Coverage . Horizontal coverage for a single array can be considered constant regardless of the number of array elements or the angles between them. TIP: The angle between two or more line arrays can also be changed to meet additional design requirements (for ex...
Page 25 - This example is not meant to; USING THE M2D-SUB WITH THE M2D
18 CHAPTER 4 19 CHAPTER 4 Figures 4.1 shows a series of MAPP Online predictions based on an example M2D system design. In this case, small vertical splay angles on the upper part of the array are used to cover longer distances, while greater angles are used in the lower elements to increase vertical...
Page 26 - Adding a Line Driver; Engaging the Lo-Cut Filter
20 CHAPTER 4 21 CHAPTER 4 In addition, the use of high-pass filters to drive an M2D system with the M2D-Sub flattens overall frequency response and slightly increases M2D headroom in the lowest end of its usable spectrum. The ideal ratio of M2D to M2D-Sub loudspeakers depends on the configuration of...
Page 27 - Digital Signal Processors; Type; USING THE 650-P WITH THE M2D
20 CHAPTER 4 21 CHAPTER 4 Using the LD-3 In addition to the 160 Hz high-pass filter on the LD-3, the LD-3 compensating line driver provides additional filtering capabilities to help you further fine-tune an M2D/M2D-Sub system. Table 4.2: M2D and M2D-Sub frequency response results with different filt...
Page 29 - MEYER SOUND MAPP ONLINE; In order to use the MAPP Online; CHAPTER 5: SYSTEM DESIGN AND INTEGRATION TOOLS
23 CHAPTER 5 Meyer Sound offers two comprehensive tools to assist you with the acoustical and functional requirements of system design and optimization. This chapter introduces you to the Meyer Sound MAPP Online acoustical prediction program, and the SIM audio analyzer, a robust instrumentation pack...
Page 30 - SIM MEASUREMENT SYSTEM
24 CHAPTER 5 SIM MEASUREMENT SYSTEM The SIM audio analyzer is a measurement and instrumentation system including a selection of hardware and software options, microphones and accessory cables. The SIM analyzer is optimized for making audio frequency measurements of an acoustical system with a resolu...
Page 31 - All Meyer Sound products; MG-2D MULTIPURPOSE GRID; See Meyer Sound’s assembly guides on; CHAPTER 6: QUICKFLY RIGGING
25 CHAPTER 5 The M2D and M2D-Sub loudspeakers feature Meyer Sound’s QuickFly rigging system with rugged, reliable and deceptively simple components that remain captive, in transit. QuickFly rigging facilitates constructing rigid, ground-stacked or flown M2D-Sub arrays, and eases integration of M2D-S...
Page 32 - MG-1D Multipurpose Grid; One UPA-1P compact wide coverage loudspeaker
26 CHAPTER 5 The MG-2D grid provides additional functionality, including transitioning to an M2D or M2D-Sub array from the bottom of a/an: M3D or M3D-Sub loudspeaker (MTK-2D transition kit required); or MILO loudspeaker (MTB-2D/M transition bar kit required) MG-1D Multipurpose Grid The MG-1D mul...
Page 33 - APPENDIX A
27 APPENDIX A TROUBLESHOOTING This section contains possible solutions to some common problems encountered by M2D and M2D-Sub loudspeaker users and is not intended to be a comprehensive trouble-shooting guide. The On/Temp. LED (Active LED on M2D-Sub) does not illuminate and there is no audio. 1. Mak...
Page 35 - APPENDIX B; M2D SPECIFICATIONS; ACOUSTICAL
29 APPENDIX B APPENDIX B M2D SPECIFICATIONS ACOUSTICAL Note: The low-frequency power response of the system will increase according to the length of the array. Operating frequency range 60 Hz - 16 kHz Note: Recommended maximum operating frequency range. Response depends upon loading conditions and r...
Page 36 - AMPLIFIER; PHYSICAL
30 APPENDIX B 31 APPENDIX B RF filter Common mode: 425 kHz; Differential mode: 142 kHz TIM filter <80 kHz, integral to signal processing Nominal input sensitivity 0 dBV (1 V rms, 1.4 V pk) continuous is typically the onset of limiting for pink noise and music. Input level Audio source must be cap...
Page 37 - M2D-SUB SPECIFICATIONS
30 APPENDIX B 31 APPENDIX B M2D-SUB SPECIFICATIONS ACOUSTICAL Note: The low-frequency power response of the system will increase according to the length of the array. Operating frequency range 28 Hz - 160 Hz Note: Recommended maximum operating frequency range. Response depends upon loading condition...
Page 38 - AMPLIFIERS
32 APPENDIX B Input level Audio source must be capable of producing a minimum of +20 dBV (10 V rms, 14 V pk) into 600 ohms in order to produce maximum peak SPL over the operating bandwidth of the loudspeaker. AMPLIFIERS Amplifier type Two-channel complementary MOSFET output stages (class AB/H) Outpu...
