Meyer Sound MPS-488 - Manual

7 CHAPTER 1: INTRODUCTION HOW TO USE THIS MANUAL 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. As you read these operating instructions, you will encounte...

CHAPTER 1: INTRODUCTION 8 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. The outputs — equipp...

9 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 loud-speakers. 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: th...

CHAPTER 2: THE MPS-488 POWER SUPPLY 10 Channel Inputs 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 imped-ance of 10 kOhm...

MM-4XP OPERATING INSTRUCTIONS 11 ■ 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. Common Routing Examples Table 1 lists some of the more common ro...

CHAPTER 2: THE MPS-488 POWER SUPPLY 12 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-488 P model) or EN3 5...

MM-4XP OPERATING INSTRUCTIONS 13 ■ 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 cal-culating the peak voltage drop in long AC cable runs according to the following formula: V pk (drop) =...

15 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 fu...

CHAPTER 3: THE MM-4XP LOUDSPEAKER 16 MM-4XP Current Draw and Cable Require-ments 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 betwe...

MM-4XP OPERATING INSTRUCTIONS 17 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, tha...

19 CHAPTER 4: MOUNTING THE MM-4XP IMPORTANT SAFETY CONSIDERATIONS When installing Meyer Sound loudspeakers, the following precautions should always be observed: ■ All Meyer Sound products must be used in accordance with local, state, federal, and industry regulations. It is the owner’s and user’s re...

21 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,...

APPENDIX A: SPECIFICATIONS 22 MPS-488 SPECIFICATIONS Audio Inputs 8 channels of XLR female connectors with Link switches to route to outputs 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) Output Voltage 8 channels o...

23 APPENDIX B: MM-4XP ACCESSORIES MM-4XP ACCESSORIES The following MM-4XP accessories are available from Meyer Sound. MM-4XP CABLE CONNECTORS AND ADAPTERS The following MM-4XP cable connectors and adapters are available from Meyer Sound. MM-4XP Accessories Part Number Accessory Notes 09.183.001.01 M...

APPENDIX B: MM-4XP ACCESSORIES 24 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 2...

25 APPENDIX C: MM-4XP CABLE ASSEMBLY ASSEMBLING EN3-TO-PHOENIX LOUDSPEAKER CABLES To connect the MM-4XP loudspeaker directly to the MPS-488 P 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 wi...