Meyer Sound M SERIES Operating Instructions Manual
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Meyer Sound M SERIES Operating Instructions Manual

M series compact curvilinear array loudspeaker and compact subwoofer
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M SERIES
OPERATING INSTRUCTIONS
M2D Compact Curvilinear Array Loudspeaker
M2D-Sub Compact Subwoofer
Keep these important operating instructions.
Check www.meyersound.com for updates.

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  • Page 1 M SERIES OPERATING INSTRUCTIONS M2D Compact Curvilinear Array Loudspeaker M2D-Sub Compact Subwoofer Keep these important operating instructions. Check www.meyersound.com for updates.
  • Page 2 M Series, M2D, RMS, REM, VEAM, Intelligent AC and all alphanumeric product designations are trademarks of Meyer Sound. Meyer Sound, Meyer Sound MAPP Online, SIM, TruPower and QuickFly are registered trademarks of Meyer Sound Laboratories Inc. (Reg. U.S. Pat. & Tm. Off.).

  • Page 3: Important Safety Instructions

    Protective earth ground Masse, châssis Terre de protection Die schutzerde Tierra proteccionista Sound. Meyer Sound, or sold with the loudspeaker. Handles are for carrying only. CAUTION: Rigging should only be done by experienced professionals. when unused for long periods of time.

  • Page 4: Safety Summary

    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.

  • Page 5: Table Of Contents

    CONTENTS INTRODUCTION How to Use this Manual Introducing the M2D and M2D-Sub Loudspeakers CHAPTER 1: Power Requirements AC Power AC Power Distribution Power Connector Wiring Voltage and Current Requirements M2D Voltage Requirements M2D Current Requirements M2D-Sub Voltage Requirements M2D-Sub Current Requirements CHAPTER 2: Amplification and Audio Audio Input M2D Interconnections...
  • Page 6 Engaging the Lo-Cut Filter Using the LD-3 Digital Signal Processors Using the 650-P with the M2D CHAPTER 5: System Design and Integration tools Meyer Sound MAPP Online® SIM® Measurement System Source Independent Measurement Technique Applications CHAPTER 6: QuickFly® Rigging MG-2D Multipurpose Grid...

  • Page 7: Introduction

    INTRODUCING THE M2D AND M2D-SUB LOUDSPEAKERS As part of Meyer Sound’s M Series, the M2D compact curvilinear array loudspeaker and M2D-Sub compact subwoofer bring numerous advantages to mid-sized venues that require tight vertical pattern control with long throw.
  • Page 8 M2D loudspeaker in reinforcement applications requiring extended low-frequency headroom. The M2D-Sub loudspeaker affords 138 dB SPL peak output capability. It employs two Meyer Sound ferrofluid cooled, back-vented drivers each featuring a 4-inch voice coil with a lightweight neodymium magnet structure. Each driver is rated to handle 1200 AES watts.

  • Page 9: Chapter 1: Power Requirements

    Turn on 165V~ Turn off 264V~ Improper grounding connections between loudspeakers and the rest of the audio system may produce noise, hum and/or serious damage to the input/output stages in the Meyer Sound, Berkeley, CA USA system’s electronic equipment. CAUTION: Meyer Sound self-powered loudspeaker, be sure that the voltage potential difference between neutral and earth ground is less than 5 volts AC.

  • Page 10: Power Connector Wiring

    If your M2D or M2D-Sub loudspeaker is fitted with the VEAM multipin connector, see the Meyer Sound document VEAM Cable Wiring Reference (part number 06.033.113) for the wiring conventions and pin-outs for AC, audio, and RMS connections.

  • Page 11: Voltage And Current Requirements

    AC power immediately. Verify that the voltage is within the proper range. If the problem persists, please contact Meyer Sound or an authorized service center. If voltage drops below the low boundary of its safe operating range (brownout), the M2D loudspeaker...

  • Page 12: M2D-Sub Voltage Requirements

    Verify that the voltage is within the proper range. If the problem persists, please contact Meyer Sound or an authorized service center. If voltage drops below the low boundary of either safe operating range (brownout), the M2D-Sub loudspeaker uses...
  • Page 13 In the unlikely event that the 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. CAUTION: The M2D and M2-Sub loudspeakers require a ground connection.
  • Page 14 CHAPTER 1...

  • Page 15: Chapter 2: Amplification And Audio

    Figure 2.3. M2D and M2D-Sub user panel audio input connectors Turn on 85V~ Turn off 134V~ Turn on 165V~ Turn off 264V~ Meyer Sound, Berkeley, CA USA CAUTION: Ensure that all cabling carrying signals to M2D or M2D-Sub loudspeakers �...

  • Page 16: M2D Interconnections

    M2D AMPLIFICATION All three drivers in the M2D are powered by a two-channel proprietary Meyer Sound UX-M2D amplifier utilizing complementary MOSFET output stages (class AB/bridged) capable of delivering 700 watts total. The amplifier employs electronic crossover, phase, and frequency response correction filters –...

  • Page 17: M2D Amplifier Cooling System

    The fan speed increases as the heatsink temperature rises, which maintains a safe operating temperature with minimal fan noise. Contact Meyer Sound to order the fan kit. Power Supply Fan The power supply is cooled by a single small internal fan operates on low speed when the unit is first powered up.

  • Page 18: M2D-Sub Amplification

    M2D-SUB LIMITING The M2D-Sub loudspeaker uses Meyer Sound’s advanced TruPower limiting system. Conventional limiters assume a constant loudspeaker impedance and therefore set the limiting threshold by measuring voltage only.

  • Page 19: M2D-Sub Amplifier Cooling System

    Sub automatically shuts down until AC power is removed and reapplied. If the M2D-Sub shuts down again after cooling and reapplying AC power, contact Meyer Sound for repair information. Despite the M2D-Sub loudspeaker's filtering, extensive use or a dusty operating environment can allow dust to accumulate along the path of the airflow, preventing normal cooling.
  • Page 20 CHAPTER 2...

  • Page 21: Chapter 3: Rms Remote Monitoring System

    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 location. Optional RMS software delivers extensive status and system performance data directly to you from every installed loudspeaker.

  • Page 22: Service Button

    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 (green) When lit, the Wink LED indicates that an ID signal has been sent from the host station computer to the...

  • Page 23: Chapter 4: Line Arrays And System Integration

    CHAPTER 4: LINE ARRAYS AND SYSTEM INTEGRATION 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 the sound reinforcement industry.

  • Page 24: High-Frequency Design Strategies

    NOTE: THE Meyer Sound MAPP Online prediction program, covered in greater detail later in Chapter 5, “System Design and Integration Tools,” enables you to make accurate and comprehensive predictions for optimal coverage(s) during the design phase.

  • Page 25: Using The M2D-Sub With The M2D

    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 coverage for shorter distances.

  • Page 26: Daisy-Chained

    Meyer Sound makes available three different line drivers. Engaging the Lo-Cut Filter Using the LD-1A, LD-2 or LD-3 Lo-Cut filter (the 160 Hz...

  • Page 27: Using The

    LD-3 Operating Instructions or visit www.meyersound.com. Digital Signal Processors Full-range signals may be applied to Meyer Sound’s self- powered loudspeakers because they have built-in active crossover circuits; external crossovers and digital signal processors (DSP) are optional and should be used very carefully due to phase shifts that can cause cancellations.
  • Page 28 CHAPTER 4 Table 4.4: M2D and 650-P (650-P set to pin 2 positive) frequency response results with LD-1A, LD-2 and LD-3 (160 Hz filter) Lo-Cut ø Reverse Result Switch Flat response (small rise on 70 Hz -160 Hz area), -6 dB sub gain recommended* Engaged Engaged Very flat response, -6 dB sub gain...

  • Page 29: Chapter 5: System Design And Integration Tools

    CHAPTER 5: SYSTEM DESIGN AND INTEGRATION TOOLS 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 package for system measurement, analysis, and more.

  • Page 30: Sim Measurement System

    (time) domain information. Source Independent Measurement Technique The SIM audio analyzer implements Meyer Sound's source independent measurement technique, a dual-channel method that accommodates statistically unpredictable excitation signals. Any excitation signal that encompasses...

  • Page 31: Chapter 6: Quickfly Rigging

    This chapter gives an overview of M2D and M2D-Sub rigging accessories. For complete information on how to set up and use the rigging accessories, refer to Meyer Sound’s assembly guides at www.meyersound.com/products. CAUTION: All Meyer Sound products must be used in accordance with local, state, federal, and industry regulations.

  • Page 32: Mg-1D Multipurpose Grid

    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 multipurpose grid (Figure 6.4) was originally designed to allow M1D and M1D-Sub loudspeakers to be flown or ground stacked.

  • Page 33: Appendix A

    Limit LED is constantly yel- low (red on M2D-Sub). 1. Turn down the level of the input signal to the loud- speaker system. The On/Temp. LED (M2D) is illuminated red. This occurs in conditions where the heatsink temperature reaches 85°C (185°F), indicating that the amplifier is ther-...
  • Page 34 APPENDIX A...

  • Page 35: 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 room acoustics. Frequency response 70 Hz - 14 kHz ±4 dB Note: Free field, measured with 1/3 octave frequency resolution at 4 meters.
  • Page 36 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 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...

  • Page 37: M2D-Sub Specifications

    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 conditions and room acoustics. Frequency response 30 Hz - 140 Hz ±4 dB Note: Free field, measured with 1/3 octave frequency resolution at 4 meters.
  • Page 38 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) Output power...
  • Page 40 Meyer Sound Laboratories, Inc. T: +1 510 486.1166 2832 San Pablo Avenue F: +1 510 486.8356 Berkeley, CA 94702 techsupport@meyersound.com www.meyersound.com © 2004 Meyer Sound Laboratories, Inc. All Rights Reserved 05.112.012.01...

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