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Meyer Sound Laboratories Inc.

05.157.005.02 A

Meyer Sound Laboratories Inc.
2832 San Pablo Avenue
Berkeley, CA 94702

www.meyersound.com
T: +1 510 486.1166
F: +1 510 486.8356

Содержание MJF-212A

Страница 1: ...OPERATING INSTRUCTIONS ULTRAseries MJF 212A High Power Stage Monitor Keep these important operating instructions Check www meyersound com for updates...

Страница 2: ...to 4600 m 15 000ft Non operating altitude to 6300 m 25 000ft Shock 30 g 11 msec half sine on each of 6 sides Vibration 10 Hz to 55 Hz 0 010 peak to peak excursion 2007 Meyer Sound All rights reserved...

Страница 3: ...d by Meyer Sound or sold with the loudspeaker Handles are for carrying only 13 Unplug this loudspeaker during lightning storms or when unused for long periods of time 14 Refer all servicing to qualifi...

Страница 4: ...ages auf ein Minimum zu reduzieren den Lautsprecher vom Stromnetz trennen bevor ggf ein Audio Schnittstellensign alkabel angeschlossen wird Das Netzkabel erst nach Herstellung aller Signalverbindungen...

Страница 5: ...Electrical Safety Issues 8 CHAPTER 3 Amplification and Audio 9 Audio Input 9 Amplification and Protection Circuitry 9 MJF 212A Interconnections 10 Cabling 10 The Limiting System 10 Low Frequency Limi...

Страница 6: ...vi...

Страница 7: ...tory installed VEAM Connector Appendix B Specifications and Dimensional Drawings provides detailed acoustic and electrical specifications for the MJF 212A monitor along with detailed dimensional drawi...

Страница 8: ...INTRODUCTION...

Страница 9: ...m concerts as well as corporate AV applications and clubs The MJF 212A produces a peak output of 139 dB SPL with exceptionally flat phase and frequency response The cabinet is constructed from premium...

Страница 10: ...sing package also incorporates Meyer Sound s Intelligent AC power supply which automatically adjusts for common line voltage worldwide and provides both soft turn on and transient protection The MJF 2...

Страница 11: ...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 2 1 A sample AC power...

Страница 12: ...For units shipped with the VEAM all in one multipin connector please refer to Appendix A for AC Power pin out Caution When creating AC cables and distribution systems it is important to preserve AC l...

Страница 13: ...o either low or high voltage its power supply automatically turns on again after three seconds if the voltage has returned to either normal operating window If the MJF 212A stage monitor does not turn...

Страница 14: ...hat the circuit breakers on the monitor s user panel 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...

Страница 15: ...loudspeaker If the noise stops most likely the problem is not with the loudspeaker Check the audio cable source and AC power to pinpoint the problem Audio signals can be daisy chained using the Loop o...

Страница 16: ...or s left and right 12 inch cone drivers are powered by separate amplifier channels each with a detector but routed to one limiter The lower limit LED on the user panel indicates limiting activity for...

Страница 17: ...he temperature of the heatsink reaches 75 C 167 F the On Temp LED on the rear panel turns from green On to red Temp The unit continues to operate normally even if the On Temp LED is red but this is an...

Страница 18: ...12 CHAPTER 3...

Страница 19: ...his information is permanently retained on each RMS communication board and in the computer RMS database until you modify it Loudspeaker View labels can be modified at any time allowing you to customi...

Страница 20: ...e Service Button the card will be decommissioned from the network and the red Service LED will blink Activity LED Green When the loudspeaker has been commissioned the Activity LED will flash continuou...

Страница 21: ...neutral blue Figure A 1 VEAM multipin connector power pin out For complete wiring conventions and pin outs for AC audio and RMS connections please refer to the Meyer Sound document VEAM Cable Wiring...

Страница 22: ...16 APPENDIX A...

Страница 23: ...00 Hz Note At this frequency the transducers produce equal sound pressure levels TRANSDUCERS Low low mid frequency Two high power 12 cone drivers with neodymium magnets Nominal impedance 2 Voice coil...

Страница 24: ...W 1 x 275 W 2550 W peak Note Amplifier wattage rating based on the maximum unclipped burst sine wave rms voltage that the amplifier will produce for at least 0 5 seconds into the nominal load impedan...

Страница 25: ...23mm 40 13 70 348mm 23 00 584mm 40 PHYSICAL Enclosure Premium birch plywood Finish Black textured Protective grille Powder coated hex stamped steel black mesh Dimensions 27 07 w x 16 11 h x 23 00 d 68...

Страница 26: ...20 APPENDIX B...

Страница 27: ......

Страница 28: ...2007 Meyer Sound Laboratories Inc 05 157 005 02 A Meyer Sound Laboratories Inc 2832 San Pablo Avenue Berkeley CA 94702 www meyersound com T 1 510 486 1166 F 1 510 486 8356...