Related Manuals for Meyer Sound 750-LFC Series
Summary of Contents for Meyer Sound 750-LFC Series
- Page 1 OPERATING INSTRUCTIONS LINE ARRAY 750-LFC Compact Low-Frequency Control Element Keep these important operating instructions. Check www.meyersound.com for updates.
- Page 2 The contents of this manual are furnished for informational purposes only, are subject to change without notice, and should not be construed as a commitment by Meyer Sound Laboratories Inc. Meyer Sound assumes no responsibility or liability for any errors or inaccuracies that may appear in this manual.
- Page 3 7. Do not block any ventilation openings. Install in accordance or plug has been damaged; liquid has been spilled or with Meyer Sound's installation instructions. objects have fallen into the apparatus; rain or moisture has entered the apparatus; the apparatus has been dropped; or 8.
- Page 4 Das Produkt nicht an einem Ort aufstellen, an dem es direk- ter Wassereinwirkung oder übermäßig hoher Luft- feuchtigkeit ausgesetzt werden könnte, solange es sich Español nicht um ein Produkt handelt, dass mit der Meyer Sound Weather Protection Option ausgestattet ist. • Para reducir el riesgo de descarga eléctrica, desconecte el aparato de la red eléctrica antes de instalar el cable de...
- Page 5 IMPORTANT SAFETY INSTRUCTIONS • No instale el aparato en lugares húmedos o mojados sin usar el equipo de protección contra intemperie de Meyer Sound. • No permita que penetre agua u otros objetos extraños en el interior del aparato. No coloque objetos que contengan líquido sobre o cerca de la unidad.
- Page 6 750-LFC OPERATING INSTRUCTIONS...
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Page 7: Table Of Contents
CONTENTS Important Safety Instructions Symbols Used Chapter 1: Introduction How to Use This Manual 750-LFC Compact Low-Frequency Control Element Native Mode Optimal Mid-High Loudspeaker to Subwoofer Ratio Chapter 2: Power Requirements AC Power Distribution AC Connectors Wiring AC Power Cables 750-LFC Voltage Requirements 750-LFC Current Requirements Intelligent AC Power Supply... - Page 8 750-LFC OPERATING INSTRUCTIONS Appendix A: Rain Hoods 750-LFC Rigid Rain Hood 750-LFC Collapsible Rain Hood Appendix B: 750-LFC Specifications 750-LFC without Rigging Dimensions 750-LFC with Rigging Dimensions viii...
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Page 9: Chapter 1: Introduction
Make sure to read these instructions in their entirety before Meyer Sound’s 750-LFC very compact low-frequency control configuring a Meyer Sound loudspeaker system. In particular, element reproduces low frequencies at high, continuous output pay close attention to material related to safety issues. -
Page 10: Native Mode
Figure 2: 750-LFC/LINA array (left) and groundstack (right) certain flown and groundstacked configurations without any array compensation or other signal processing. This The 750-LFC is available with or without Meyer Sound’s capability, called Native mode, allows LINA/750-LFC systems QuickFly rigging. When equipped with the optional MRK-750 ®... -
Page 11: Optimal Mid-High Loudspeaker To Subwoofer Ratio
CHAPTER 1: INTRODUCTION OPTIMAL MID-HIGH LOUDSPEAKER TO SUB- WOOFER RATIO The ideal ratio of mid-high loudspeakers to 750-LFC loudspeakers depends on the following: Loudspeaker model • System configuration • Frequency content of source material • Headroom required for low frequencies •... - Page 12 750-LFC OPERATING INSTRUCTIONS Figure 7: ULTRA-X40 pole-mounted on 750-LFC (ratio 1:1) NOTE: Native mode should not be used with more advanced configurations, such as those where LINA and 750-LFC loudspeakers are not coplanar, or those requiring delay offsets to align subsystems or to create directional low-frequency control.
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Page 13: Chapter 2: Power Requirements
CAUTION: Before applying AC power to any because the 750-LFC loudspeaker tolerates elevated voltages Meyer Sound self-powered loudspeaker, make from the ground line and does not require a neutral line. This sure that the voltage potential difference between the system delivers 208 V AC to each loudspeaker. -
Page 14: Ac Connectors
Assembled AC looping cables are also included AC power cable is necessary, make sure to use a available from Meyer Sound [PN 28.115.032.03: 3.2 ft (1 m), cable with the appropriate power plug (on the other end) for 13 AWG (2.5 mm... -
Page 15: Wiring Ac Power Cables
CHAPTER 2: POWER REQUIREMENTS WIRING AC POWER CABLES 750-LFC VOLTAGE REQUIREMENTS The pins on the gray powerCON 20 cable mount connector The 750-LFC loudspeaker operates as intended when are labeled as follows: receiving AC voltage within the following range: L (Line) 90–264 V AC, 50–60 Hz •... -
Page 16: Intelligent Ac Power Supply
Burst 9.2 A rms 4.4 A rms 10.7 A rms the required range. If the problem persists, contact Meyer Sound Technical Support. Maximum Instantaneous 15.3 A peak 7.8 A peak 18.0 A peak Peak... -
Page 17: Electrical Safety Guidelines
Always use a grounded outlet and plug. Earth ground Chassis ground Meyer Sound offers the MDM Load Calculator program that estimates AC power and AC load. This program helps users design the AC distribution system using the MDM-832 (or the Do not use a ground-lifting adapter or cut the AC cable •... - Page 18 750-LFC OPERATING INSTRUCTIONS...
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Page 19: Chapter 3: Amplification And Audio
CHAPTER 3: AMPLIFICATION AND AUDIO The 750-LFC loudspeaker’s driver is powered by a proprietary two-channel, open-loop, class D amplifier. The audio signal is processed with correction filters for flat phase and frequency response, and by driver protection circuitry. Each channel has peak and rms limiters that prevent driver over-excursion and regulate voice coil temperatures. -
Page 20: Cable Rings
100 Ω or less. This same rule applies vary. Consequently, conventional limiters often begin when looping 750-LFC units with other Meyer Sound limiting prematurely, which reduces system headroom and self-powered loudspeakers. -
Page 21: Amplifier Cooling System
If the On/Status LED flashes red and the loudspeaker does ceases. not output audio, contact Meyer Sound Technical Support immediately. The 750-LFC loudspeaker performs within its acoustical specifications at normal temperatures when the LF Limit LED... - Page 22 750-LFC OPERATING INSTRUCTIONS...
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Page 23: Chapter 4: Quickfly Rigging
(roof truss), and not just to the wall surface. All Meyer Sound products must be used in accordance • with local, state, federal, and industry regulations. It is the Make sure bolts and eyebolts are tightened securely. - Page 24 750-LFC OPERATING INSTRUCTIONS Table 2: 750-LFC Rigging Options MCF-750 (rigging) 34 lb Safely transports up to three 750-LFC cabinets. This caster 0.25 in x 0.90 in (black caster frame kit (15.4 kg) frame is for cabinets equipped with MRK-750 rigging. button with 6-inch PN 40.271.070.02 lanyard),...
- Page 25 CHAPTER 4: QUICKFLY RIGGING Rigging Example, Mixed Array with 750-LFCs and LINAs MVP Motor Vee Plate Attached to front center of grid with two motors MG-MINA/LINA/750-LFC to adjust the horizontal Multipurpose Grid aim of the array Fitted with GLK for improved load rating when hanging 750-LFC (2) 750-LFC...
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Page 26: Groundstacking 750-Lfc Loudspeakers (Without Grid)
750-LFC OPERATING INSTRUCTIONS GROUNDSTACKING 750-LFC 750-LFC CARDIOID ARRAYS LOUDSPEAKERS (WITHOUT GRID) The 750-LFC loudspeaker can be configured in cardioid 750-LFC loudspeakers can be groundstacked up to three arrays to reduce undesirable low frequency leakage behind units high, with or without the MRK-750 rigging kit. Protective the loudspeakers. -
Page 27: Mrk-750 Rigging Kit
750-LFC GUIDEALINKS NOTE: To achieve an accurate cardioid pattern, you must use Meyer Sound’s MAPP prediction When equipped with the MRK-750 rigging kit, the 750-LFC software. Use MAPP to calculate the appropriate cabinet includes six captive GuideALinks and six mating link... -
Page 28: Glk-750 Grid Link Kit
The original MG-MINA grid (PN 40.207.101.01) includes only the front and the middle links that allow flying MINA or LINA loudspeakers from it. Meyer Sound recommends NOT using the middle link to attach the 750-LFC. Using the middle link halves the load-rating compared to using the front and rear attachment points. - Page 29 CHAPTER 4: QUICKFLY RIGGING The 750-LFC cabinet’s front and middle links insert into slots in the MG-MINA/LINA/750-LFC grid when groundstacking the 750-LFC. The 750-LFC cabinet’s front and middle GuideALinks CAUTION: Do not use the 750-LFC slots are used when stacking LINA loudspeakers on top of the loudspeaker’s middle GuideALinks when flying 750-LFC (Figure 21).
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Page 30: Pole-Mount Receptacle
U-bracket (47 lb, 21.3 kg) paired with ULTRA Series loudspeakers. You can mount Meyer Sound loudspeakers on top of the 750-LFC with a Two MINA or LINA loudspeakers with MUB-MINA/LINA •... -
Page 31: Mcf-750 Caster Frame
CHAPTER 4: QUICKFLY RIGGING MCF-750 CASTER FRAME The caster frame for 750-LFC cabinets equipped with the MRK-750 rigging includes four fixed, 0° link slots that attach to The MCF-750 caster frame safely transports up to three the cabinet at the bottom of the stack and are secured with the 750-LFC loudspeakers, making it easy to assemble and quick-release pins (0.25 in x 0.90 in, black button with 6-inch disassemble arrays in blocks of three cabinets. - Page 32 750-LFC OPERATING INSTRUCTIONS 750-LFC cabinets need not be equipped with the MRK-750 750-LFC cabinets equipped with the MRK-750 rigging kit rigging kit for transport with the caster frame. The provide for more secure transport, because the bottom loudspeaker skids ensure that cabinets stack cleanly on the cabinet can be linked and pinned to the caster frame.
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Page 33: Safety Guidelines For The Mcf-750 Caster Frame
CHAPTER 4: QUICKFLY RIGGING SAFETY GUIDELINES FOR THE MCF-750 CASTER FRAME Do not stack more than three cabinets on the MCF-750 • caster frame. Use straps when transporting 750-LFC loudspeakers that • have not been fitted with the MRK-750 rigging kit. To avoid tipping, transport stacks with loudspeakers linked •... -
Page 34: Dimensions: Mcf-750 Caster Frame With Rigging
750-LFC OPERATING INSTRUCTIONS DIMENSIONS: MCF-750 CASTER FRAME WITH RIGGING 24.91 in [633 mm] 24.16 in 24.16 in [614 mm] [614 mm] 7.50 in 5.85 in [190.5 mm] [149 mm] 17.70 in 17.14 in [450 mm] [435 mm] Figure 29: MCF-750 Caster Frame Dimensions (for cabinets with rigging) MCF-750 Caster Frame with Rigging Weight: 34 lbs (15.4 kg) -
Page 35: Dimensions: Mcf-750 Caster Frame Without Rigging
CHAPTER 4: QUICKFLY RIGGING DIMENSIONS: MCF-750 CASTER FRAME WITHOUT RIGGING 24.16 in [614 mm] 24.91 in [633 mm] 7.50 in 5.85 in [190 mm] [149 mm] 17.14 in 17.70 in [435 mm] [450 mm] Figure 30: MCF-750 Caster Frame Dimensions (for cabinets without rigging) MCF-750 Caster Frame without Rigging Weight: 28.7 lbs (13.0 kg) - Page 36 750-LFC OPERATING INSTRUCTIONS...
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Page 37: Chapter 5: Rms Remote Monitoring System
RMS network. RMS reports, in real time, the status and deployed in the system. Multiple pages can be saved and power usage of multiple Meyer Sound loudspeakers from a recalled for specific performances and venues. Mac or Windows-based computer. The RMServer... -
Page 38: Neuron Id For Rms Module
750-LFC OPERATING INSTRUCTIONS RMS Network Connectors During startup, the LED flashes green 10 times. • The Weidmuller 2-conductor, locking connectors transfer If the loudspeaker has not yet been discovered on the • RMS network, the LED is not lit after startup. data to and from the RMS network. -
Page 39: Chapter 6: System Design And Integration Tools
CHAPTER 6: SYSTEM DESIGN AND INTEGRATION TOOLS This chapter introduces MAPP, Meyer Sound’s patented MAPP software allows for configuration of Meyer Sound system design tool and the Galileo GALAXY Network loudspeaker systems and definition of the environment in Platform. which they operate, including air temperature, pressure, humidity, and the location of prediction surfaces. -
Page 40: Galileo Galaxy Network Platform
GALILEO GALAXY NETWORK PLATFORM The Galileo GALAXY Network Platform is a sophisticated loudspeaker management tool for controlling all Meyer Sound speaker types. The GALAXY loudspeaker processor extends a high level of audio control in driving and aligning loudspeaker systems with multiple zones. It... -
Page 41: Appendix A: Rain Hoods
2. Attach the rain hood to the user panel, and secure it to the center of the panel with the four pan head Phillips 6/32 x 0.38-inch stainless steel screws provided. 3. Make sure to tighten the screws to create a good seal against the user panel. Meyer Sound recommends using a torque value of 10–12 in-lbs (1.1–1.4 N·m). - Page 42 750-LFC OPERATING INSTRUCTIONS...
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Page 43: Appendix B: 750-Lfc Specifications
APPENDIX B: 750-LFC SPECIFICATIONS Loudspeaker system predictions for coverage and SPL are available in Meyer Sound’s MAPP prediction software, which can be found on the Meyer Sound website: meyersound.com/products. ACOUSTICAL Operating Frequency Range 35 Hz – 125 Hz Note: Recommended maximum operating frequency range. - Page 44 750-LFC OPERATING INSTRUCTIONS AMPLIFIER Type Two-channel, open-loop, class D Total Output Power 3100 W peak Note: Peak power based on the maximum unclipped voltage the amplifier will produce into the nominal load impedance. THD, IM, TIM <0.02% Cooling Convection AC POWER Connectors powerCON 20 input with loop output Automatic Voltage Selection...
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Page 45: 750-Lfc Without Rigging Dimensions
APPENDIX B: 750-LFC SPECIFICATIONS 750-LFC WITHOUT RIGGING DIMENSIONS 21.8 in [554 mm] 18.8 in 20.9 in [478 mm] [530 mm] 20.3 in [515 mm] 11.0 in [279 mm] .2 in 9.8 in [6 mm] [248 mm] 1 1/2 in [38 mm] U.S. 1 3/8 in [35 mm] E.U. -
Page 46: 750-Lfc With Rigging Dimensions
750-LFC OPERATING INSTRUCTIONS 750-LFC WITH RIGGING DIMENSIONS 21.55 in [547 mm] 20.88 in 18.55 in [471 mm] [530 mm] 20.43 in [519 mm] 10.90 in [277 mm] 9.88 in .25 in [251 mm] [6 mm] 1 1/2 in [38 mm] U.S. 1 3/8 in [35 mm] E.U. - Page 47 APPENDIX B: 750-LFC SPECIFICATIONS Federal Communications Commission (FCC) Statement This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
- Page 48 750-LFC OPERATING INSTRUCTIONS...
- Page 52 Meyer Sound Laboratories Inc. © 2018–2020 2832 San Pablo Avenue Meyer Sound. All rights reserved. Berkeley, CA 94702 +1 510 486.1166 750-LFC Operating Instructions PN 05.271.005.01 C meyersound.com...