Meyer Sound MJF-212A Betriebsanleitung

OPERATING INSTRUCTIONS ULTRAseRiesMJF-212A™ High-Power Stage MonitorKeep these important operating instructions.Check www.meyersound.com for updates.

4CHAPTER 1INTEGRATED AMPLIFIER AND PROCESSINGAs a self-powered loudspeaker, the MJF-212A incorporates a high-power, three-channel, class AB/H power am

5CHAPTER 2The MJF-212A monitor combines advanced self-powered loudspeaker technology with equally advanced power capabilities. Understanding the power

6CHAPTER 2The blue input connector serves as the input for all the units looped in that circuit and is rated at 20 amps maximum. Please make sure neve

7CHAPTER 2TIP: Since the MJF-212A does not require a dedicated neutral, it can tolerate elevated voltages from ground and can be connected between lin

8CHAPTER 2 NOTE: For best performance, the AC cable voltage drop should not exceed 10 volts, or 10 percent at 115 volts and 5 percent at 230 v

9CHAPTER 3More than just a self-powered stage monitor, the MJF-212A uses sophisticated amplification and protection circuitry and an advanced limiting

10CHAPTER 3 CAUTION: Please note that the amplifier for the MJF-212A monitor is different from those found in other Meyer Sound loudspeakers. Specific f

11CHAPTER 3The MJF-212A is performing within its acoustical specifications and operating at a normal temperature if the limit LEDs are lit for no longe

12CHAPTER 3

13CHAPTER 4RMS is a real-time monitoring system that connects Meyer Sound self-powered loudspeakers with a Windows-based PC at the sound mix position

ii DECLARATION OF CONFORMITY ACCORDING TO ISO/IEC GUIDE 22 AND EN 45014Manufacturer’s Name:Meyer Sound Laboratories Inc.Manufacturer’s Address:2832 Sa

14CHAPTER 4NOTE: The Service LED indicates that the stage monitor is not commissioned on the network and has no effect on the acoustical and/or electr

15APPENDIX AThe MJF-212A monitor requires a grounded outlet. It is very important that the system be properly grounded in order to operate safely and

16APPENDIX A

17APPENDIX BACOUSTICALNote: Recommended maximum operating frequency range. Response depends on loading conditions and room acoustics.Operating frequen

18APPENDIX BAUDIO INPUTType Differential, electronically balancedMax. common mode range ±15 V DC, clamped to earth for voltage transient protectionCon

19APPENDIX B27.07 [688mm]16.11 [409mm]8.80 [223mm]40¡13.70 [348mm]23.00 [584mm]40¡PHYSICALEnclosure Premium birch plywoodFinish Black textured Protect

20APPENDIX B

©2007Meyer Sound Laboratories Inc.05.157.005.02 AMeyer Sound Laboratories Inc.2832 San Pablo AvenueBerkeley, CA 94702www.meyersound.comT: +1 510 486.1

iii SYMBOLS USEDThese symbols indicate important safety or operating features in this booklet and on the chassis:1. Read these instructions.2. Keep

iv English- To reduce the risk of electric shock, disconnect the loudspeaker from the AC mains before installing audio cable. Reconnect the power cor

v CONTENTSINTRODUCTION 1CHAPTER 1: Introducing the MJF-212A High-Power Stage Monitor 3Advanced MJF-212A Driver Technology 3Integrated Amplifier and

vi

1INTRODUCTIONThese operating instructions provide important information about the form, features, function, and specifications of the MJF-212A™ high-po

2INTRODUCTION

3CHAPTER 1The Meyer Sound MJF-212A is a self-powered stage monitor designed to meet critical monitoring requirements in professional applications. Exh