OPERATING INSTRUCTIONS INDUSTRIAL SERIES MM-4XP Miniature Loudspeaker MPS-488 Power Supply Keep these important operating instructions. Check www.meyersound.com for updates.
DECLARATION OF CONFORMITY ACCORDING TO ISO/IEC GUIDE 22 AND EN 45014 This device complies with EN 55103-1 & -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.
SYMBOLS USED These symbols indicate important safety or operating features in this booklet and on the chassis: ! Dangerous voltages: risk of electric shock Important operating instructions Frame or chassis Protective earth ground Pour indiquer les risques résultant de tensions dangereuses Pour indequer important instructions Masse, châssis Terre de protection Warnung vor gefährlicher elektrischer Spannung Wichtige Betriebsanweisung oder Gebrauchsanleitung Rahmen oder Gehäuse Masse Schutzleiter
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.
CONTENTS Chapter 1: Introduction How to Use This Manual the MM-4XP Miniature Loudspeaker Chapter 2: The MPS-488 Power Supply The MPS-488 Front Panel The MPS-488 Rear Panel MPS-488 Current Draw Safety Issues Chapter 3: The MM-4XP Loudspeaker The MM-4XP Connector The MM-4XP LED Connecting MM-4XP Loudspeakers to the MPS-488 Chapter 4: Mounting the MM-4XP Important Safety Considerations Mounting the MM-4XP with the MUB-MM4XP U-Bracket Appendix A: Specifications MM-4XP Specifications MPS-488 Specifications
CONTENTS vi
CHAPTER 1: INTRODUCTION HOW TO USE THIS MANUAL THE MM-4XP MINIATURE LOUDSPEAKER Make sure to read these operating instructions in their entirety before configuring a loudspeaker system with MM-4XPs. In particular, pay close attention to material related to safety issues. The MM-4XP miniature loudspeaker is a self-powered loudspeaker designed for high-quality distributed systems.
CHAPTER 1: INTRODUCTION MM-4XP loudspeaker systems require an MPS-488 external power supply. The single-space 19-inch rack unit receives eight channels of balanced audio from its XLR female inputs and routes the audio, along with 48 V of DC power, to its eight Channel Outputs.
CHAPTER 2: THE MPS-488 POWER SUPPLY The MPS-488 power supply was designed to deliver DC power and balanced audio to up to eight MM-4XP loudspeakers. The MPS-488 is a switched-mode regulated power supply that occupies one space in a standard 19-inch rack. There are two MPS-488 models available: the MPS-488P, which has Phoenix 5-pin male output connectors, and the MPS-488E, which has EN3 5-pin female output connectors.
CHAPTER 2: THE MPS-488 POWER SUPPLY Channel Inputs How Linked Input Channels Are Routed Up to eight channels of balanced audio are received via the MPS-488’s eight Channel Inputs. The inputs are equipped with XLR female connectors (pin 1, ground; pin 2, signal positive; pin 3, signal negative) and have an input impedance of 10 kOhms. Make sure to use standard balanced XLR cables with all three pins connected on both ends.
MM-4XP OPERATING INSTRUCTIONS ■ When Link switches 1 and 3 are on and Link switch 2 is off, Channel Input 1 is routed to Channel Outputs 1–2, and Channel Input 3 is routed to Channel Outputs 3–4. Channel Inputs 2 and 4 are inactive. X 1 2 X 3 4 1 1 3 3 Common Routing Examples Table 1 lists some of the more common routing applications for the MPS-488 Link switches.
CHAPTER 2: THE MPS-488 POWER SUPPLY Channel Outputs MPS-488E Channel Outputs The eight Channel Outputs deliver DC power (48 V DC) and balanced audio to up to eight loudspeakers. Each Channel Output can drive one MM-4XP loudspeaker and is equipped with either Phoenix 5-pin male connectors (on the MPS-488P model) or EN3 5-pin male connectors (on the MPS-488E model).
MM-4XP OPERATING INSTRUCTIONS ■ Burst Current — The maximum rms current during a period of around one second. The Burst Current is used as a rating for magnetic breakers. It is also used for calculating the peak voltage drop in long AC cable runs according to the following formula: SAFETY ISSUES Pay close attention to these important electrical and safety issues. ■ The MPS-488 requires a grounded outlet.
CHAPTER 2: THE MPS-488 POWER SUPPLY 14
CHAPTER 3: THE MM-4XP LOUDSPEAKER THE MM-4XP CONNECTOR The MM-4XP receives DC power and balanced audio from a EN3 5-pin male connector on its rear panel. The connector’s five pins include two for DC power (negative and positive) and three for balanced audio (shield, negative, and positive). To function properly, the MM-4XP requires 48 V of DC power. When assembling MM-4XP loudspeaker cables with the included EN3-to-pigtail cables, make sure to use the wiring scheme in Table 2.
CHAPTER 3: THE MM-4XP LOUDSPEAKER MM-4XP Current Draw and Cable Requirements Each MM-4XP loudspeaker draws a maximum current of 0.7 A rms and 2.2 A peak from the 48 V DC output of the MPS-488. The current draw for the MM-4XP is dynamic and fluctuates as operating levels change. The cabling between the MM-4XP and the MPS-488 adds resistance and hence causes a voltage drop at the loudspeaker.
MM-4XP OPERATING INSTRUCTIONS The MM-4XP performs within its acoustical specifications at normal temperatures when the MM-4XP LED is green, or if the LED turns yellow for two seconds or less and then turns green for at least one second. If the LED remains yellow for longer than three seconds, that loudspeaker enters hard limiting where: CONNECTING MM-4XP LOUDSPEAKERS TO THE MPS-488 To connect MM-4XP loudspeakers to the MPS-488: 1. Power off the MPS-488. ■ Increases to the input level have no effect. 2.
CHAPTER 3: THE MM-4XP LOUDSPEAKER CAUTION: Make sure the MM-4XP loudspeaker cables are wired correctly. For details on assembling loudspeaker cables, see Appendix C, “MM-4XP Cable Assembly.” ! 5. Power on the MPS-488 and monitor the LEDs on the front panel to verify connections (for more information, see “Voltage and Load Current LEDs (1–8)” on page 9). 6. Check the MM-4XP LEDs on the rear panel and verify they are green (ready to reproduce audio). 7.
CHAPTER 4: MOUNTING THE MM-4XP IMPORTANT SAFETY CONSIDERATIONS To mount the MM-4XP with the MUB-MM4XP U-bracket: When installing Meyer Sound loudspeakers, the following precautions should always be observed: 1. Mount the MUB-MM4XP U-bracket to the mounting surface using screws in the two holes in the back of the U-bracket. Use fastening hardware appropriate for the mounting surface. ■ All Meyer Sound products must be used in accordance with local, state, federal, and industry regulations.
CHAPTER 4: MOUNTING THE MM-4XP 20
APPENDIX A: SPECIFICATIONS MM-4XP SPECIFICATIONS Operating Frequency Range 120 Hz – 18 kHz Note: Recommended maximum operating frequency range. Response depends on loading conditions and room acoustics. Frequency Response 160 Hz – 16 kHz ±4 dB Note: Measured free-field with pink noise at 1 meter, 1/3rd octave resolution.
APPENDIX A: SPECIFICATIONS MPS-488 SPECIFICATIONS Audio Inputs Outputs Output Voltage Front Panel 8 channels of XLR female connectors with Link switches to route to outputs 8 channels of Phoenix 5-pin male connectors or EN3 5-pin female connectors (3 pins for balanced audio, 2 pins for DC power) 8 channels of 48 V DC (2.
APPENDIX B: MM-4XP ACCESSORIES MM-4XP ACCESSORIES The following MM-4XP accessories are available from Meyer Sound. MM-4XP Accessories Part Number Accessory Notes 09.183.001.01 MPS-488P external power supply (with US power cord) Channel Outputs equipped with Phoenix 5-pin male connectors 09.183.001.02 MPS-488P external power supply (with CE power cord) 09.183.001.03 MPS-488E external power supply (with US power cord) 09.183.001.
APPENDIX B: MM-4XP ACCESSORIES MM-4XP CABLES The following MM-4XP cables are available from Meyer Sound. NOTE: All MM-4XP loudspeaker cables and bulk cable use Belden 1502R (regular) or Belden 1502P (plenum) cable. Belden 1502 is a composite cable comprised of two 18 AWG wires for DC power, two 22 AWG wires for balanced audio, and one 24 AWG wire for audio shield. MM-4XP Loudspeaker Cables Part Number Cable Color Coating Length 524.014 Bulk (no connectors) Black Regular 500 ft spool 524.
APPENDIX C: MM-4XP CABLE ASSEMBLY ASSEMBLING EN3-TO-PHOENIX LOUDSPEAKER CABLES To connect the MM-4XP loudspeaker directly to the MPS-488P power supply, you need an EN3 5-pin female to Phoenix 5-pin female cable. The following procedure documents how to assemble this cable. If you are starting with an EN3-to-pigtail cable (included with the MM-4XP), you can disregard steps 4–7 in the procedure Assembled EN3-to-Phoenix Cable To assemble an EN3-to-Phoenix cable: 1.
APPENDIX C: MM-4XP CABLE ASSEMBLY 4. Disassemble the EN3 5-pin female connector and feed one end of the cable through the boot, cable clamp housing, and coupling ring. Boot Coupling ring Cable clamp housing Cord connector Disassembled EN3 5-Pin Female Cable Mount Connector 5. If the EN3 end of the cable has not been stripped, strip the outer shielding 1” and then strip the black, red, blue, and white wires .275”. 6.
MM-4XP OPERATING INSTRUCTIONS ASSEMBLING EN3-TO-EN3 LOUDSPEAKER CABLES To connect the MM-4XP loudspeaker directly to the MPS-488E power supply, you need an EN3 5-pin female to EN3 5-pin male cable. The following procedure documents how to assemble this cable. If you are starting with an EN3-to-pigtail cable (included with the MM-4XP), you can disregard step 5 in the procedure. NOTE: Cable mount connectors cannot connect to other cable mount connectors.
APPENDIX C: MM-4XP CABLE ASSEMBLY 3. Solder the five exposed conductors to the five pins on the EN3 cord connector using the following wiring scheme. Dimple identifies Pin #1 Pin #5, White, audio (+) Pin #5, White, audio (+) Pin #1, Black, 48 V DC (–) Pin #2, Red, 48 V DC (+) Pin #4, Blue, audio (–) Pin #4, Blue, audio (–) REAR FRONT Pin #3, Unshielded, audio shield Pin Destinations for EN3 5-Pin Male Cable Mount Connector 4.
Meyer Sound Laboratories Inc. 2832 San Pablo Avenue Berkeley, CA 94702 www.meyersound.com T: +1 510 486.1166 F: +1 510 486.8356 © 2007 Meyer Sound Laboratories Inc. 05.163.005.
