OPERATING INSTRUCTIONS M SERIES MINA Compact Curvilinear Array Loudspeaker Keep these important operating instructions. Check www.meyersound.com for updates.
DECLARATION OF CONFORMITY ACCORDING TO ISO/IEC GUIDE 22 AND EN 45014 Manufacturer’s Name: Meyer Sound Laboratories Inc.
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 MINA Compact Curvilinear Array Loudspeaker Chapter 2: Power Requirements AC Connectors Wiring for AC Connections AC Power Distribution MINA Voltage Requirements MINA Current Requirements Electrical Safety Issues Chapter 3: Amplification and Audio Audio Connectors Internal connections Cabling Limiting On/Temp LED Chapter 4: Line Arrays and System Integration About Line Arrays MINA Curvilinear Arrays System Design Principles Optimizing and Equalizing
CONTENTS vi Appendix A: Optional Rain Hood 45 Appendix B: MINA Specifications 47
CHAPTER 1: INTRODUCTION HOW TO USE THIS MANUAL Make sure to read these operating instructions in their entirety before configuring a loudspeaker system with MINA subwoofers. In particular, pay close attention to material related to safety issues. As you read these operating instructions, you will encounter the following icons for notes, tips, and cautions: NOTE: A note identifies an important or useful piece of information relating to the topic under discussion.
CHAPTER 1: INTRODUCTION degree horizontal polar pattern below 500 Hz. The acoustical manifold, based on Meyer Sound’s patented REM™ ribbon emulation technology, radiates driver output with very low distortion and a focused, well-behaved, narrow dispersion, minimizing destructive high-frequency interactions between cabinets.
MINA OPERATING INSTRUCTIONS When used in large arrays, typically as a main loudspeaker system, MINA can be flown with the optional MG-MINA grid. MINA’s end plates include captive GuideALinks™ and quick-release pins that allow splay angles between cabinets to be readily adjusted. The end plates also include attachment points for the MYA-MINA mounting yoke and MUB-MINA U-bracket for mounting single cabinets and small numbers of cabinets, typically for fill applications and small main systems.
CHAPTER 1: INTRODUCTION The MYA-MINA mounting yoke suspends arrays of up to three MINA cabinets from a single point, or pole-mounts up to two cabinets (pole-mount adapter not included). The MUB-MINA U-bracket mounts up to three cabinets for frontfill or under-balcony coverage with up to 20 degrees of tilt, or floor- or pole-mounts up to two cabinets (pole-mount adapter not included).
MINA OPERATING INSTRUCTIONS For most applications, Meyer Sound’s 500-HP subwoofer is the logical choice for enhancing low frequencies in MINA loudspeaker systems. The 500-HP can be flown or groundstacked with MINA arrays using the optional MTF-M’elodie/ MINA transition frame. For applications requiring more lowfrequency headroom, Meyer Sound’s 600-HP and 700-HP subwoofers are ideally suited for integration with MINA systems.
CHAPTER 1: INTRODUCTION 12
CHAPTER 2: POWER REQUIREMENTS Self-powered and ultracompact, MINA loudspeakers combine advanced loudspeaker technology with equally advanced power capabilities. Understanding power distribution, voltage and current requirements, as well as electrical safety issues, is critical to MINA’s safe operation. AC CONNECTORS The MINA user panel includes 3-pole, PowerCon AC connectors.
CHAPTER 2: POWER REQUIREMENTS WIRING FOR AC CONNECTIONS AC POWER DISTRIBUTION MINA loudspeakers require a grounded outlet. To operate safely and effectively, it is extremely important that the entire system be properly grounded.
MINA OPERATING INSTRUCTIONS MINA VOLTAGE REQUIREMENTS Powering Up MINAs MINA operates safely and continuously when the AC voltage stays within 100–264 V AC at 50 or 60 Hz. The loudspeaker can withstand continuous voltages up to 275 volts and allows any combination of voltage to GND (neutral-lineground or line-line-ground).
CHAPTER 2: POWER REQUIREMENTS V pk (drop) = I pk x R (cable total) ELECTRICAL SAFETY ISSUES The Burst Current can also be used to calculate the AC looping capability of MINA. Pay close attention to these important electrical and safety issues. ■ Ultimate Short-Term Peak Current — A rating for fastreacting magnetic breakers. ■ ■ Inrush Current — The spike of initial current encountered when powering on.
CHAPTER 3: AMPLIFICATION AND AUDIO MINA’s drivers are powered by an extremely efficient onboard three-channel, Class-D amplifier that uses minimal AC power when idle. Internal signal processing includes a complex crossover, frequency and phase correction, and limiters that prevent driver overexcursion and regulate voice coil temperatures, ensuring maximum driver lifespan.
CHAPTER 3: AMPLIFICATION AND AUDIO paths, Galileo systems offer independent inputs and outputs and presets for optimizing MINA array performance and subsystem integration. INTERNAL CONNECTIONS Meyer Sound loudspeakers are tested and shipped from the factory with their drivers in correct alignment. If a driver needs to be replaced, make sure the replacement is installed with the correct polarity.
MINA OPERATING INSTRUCTIONS Amplifier Cooling System MINA’s amplifier relies solely on natural convection for cooling from air flowing over its heat sink. The efficient design of the amplifier and heat sink profile keeps temperatures low, even when the unit is used at high ambient temperatures in tightly packed conditions, and when driven continuously at high output levels. CAUTION: The MINA heat sink can reach temperatures of up to 85° C (185° F) during extreme operation.
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CHAPTER 4: LINE ARRAYS AND SYSTEM INTEGRATION ABOUT LINE ARRAYS MINA CURVILINEAR ARRAYS Line arrays achieve directivity through constructive and destructive interference. For example, consider one loudspeaker with a single 12-inch cone radiator in an enclosure.
CHAPTER 4: LINE ARRAYS AND SYSTEM INTEGRATION SYSTEM DESIGN PRINCIPLES High-Frequency Design Strategies Line array designs seek to achieve the following: For far-field coverage, smaller splay angles between cabinets achieves superior throw through better coupling. Longer throws require more elements with smaller splay angles at the top of the array.
MINA OPERATING INSTRUCTIONS High-Frequency Equalization Strategies For far-field coverage, air absorption plays a critical role. The longer the distance, the greater the attenuation that occurs for high frequencies. In this zone, high frequencies generally require correction to compensate for energy lost over distance; the correction is usually proportional to the distance and high-frequency air absorption.
CHAPTER 4: LINE ARRAYS AND SYSTEM INTEGRATION COMPENSATING FOR LATENCY WHEN INTEGRATING MINA LOUDSPEAKERS ■ Vertical Splay Angles: Splay angles between cabinets significantly impacts vertical coverage. Narrower vertical splay angles between top elements (M’elodies) produce higher Q vertical beamwidths and longer throws for those elements. Wider splay angles for bottom elements (MINAs) yield lower Q for high frequencies for those elements.
MINA OPERATING INSTRUCTIONS All system parameters for the Galileo 616 and Galileo 408 can be configured from the extensive Compass™ software running on a Windows or Mac® computer. The Galileo 616 can also be configured from its intuitive front panel controls. ■ Compensate for air absorption at high frequencies with each section having unique correction settings appropriate for the distance of the intended coverage.
CHAPTER 4: LINE ARRAYS AND SYSTEM INTEGRATION USING DIGITAL SIGNAL PROCESSORS NOTE: While Meyer Sound strongly recommends using the Galileo loudspeaker management system to drive Meyer Sound loudspeakers, the loudspeakers can also be driven from third-party digital signal processors. Full-range signals can be connected directly to Meyer Sound self-powered loudspeakers because the loudspeakers have built-in active crossovers.
MINA OPERATING INSTRUCTIONS Integrating 500-HP Subwoofers For most applications, Meyer Sound's 500-HP subwoofer is the logical choice for enhancing low frequencies in MINA loudspeaker systems. The 500-HP extends the range of the system down to 35 Hz. The 500-HP can be flown or groundstacked with MINA arrays using the optional MTF-M’elodie/ MINA transition frame.
CHAPTER 4: LINE ARRAYS AND SYSTEM INTEGRATION 28
CHAPTER 5: QUICKFLY RIGGING MINA loudspeakers are compatible with Meyer Sound’s QuickFly® rigging system, a comprehensive collection of rigging, flying, and mounting hardware. MINA’s captive GuideALinks allow cabinets to be linked at various splay angles for flying, groundstacking, and transport. The heavyduty GuideALinks allow for easy adjustment of array tilts, eliminating the need for pull-black straps in flown configurations.
CHAPTER 5: QUICKFLY RIGGING Front GuideAlinks The front GuideALinks act as a pivot point between linked MINAs, with the splay angle between the units determined by the rear GuideALink positions. When stowing front GuideALinks, the knob is positioned at the top of the slot. The label in the lower left corner of the end frame shows the splay angle for the GuideALink position. With the knob at the bottom, the splay angle is 0 degrees. As the knob is moved up, the angle increases (all the way to 11 degrees).
MINA OPERATING INSTRUCTIONS above them, whether they are flown or groundstacked, and other factors. MAPP Online Pro is recommended for determining the optimum splay angles for loudspeakers and coverage pattern of the array. NOTE: Optimal acoustical performance for MINA arrays is achieved by using the appropriate number of units and splay angles to meet the coverage requirements of the venue.
CHAPTER 5: QUICKFLY RIGGING TIP: The tilt for the MG-MINA and the array hung below it can be further tilted by using chain motors, or differing lengths of steel or SpanSets. MG-MINA Oriented for Maximum Array Uptilt When the MG-MINA grid is oriented with the links toward the rear of the flown loudspeakers, the grid provides maximum uptilt for the flown array (when tilting the grid). The label on the MG-MINA shows this configuration as “Maximum Uptilt.
MINA OPERATING INSTRUCTIONS MTF-M’ELODIE/MINA TRANSITION FRAME When using MINA for downfill in M’elodie arrays, the MTF-M’elodie/MINA transition frame links the bottom M’elodie to the top MINA. The transition frame can also transition from 500-HP subwoofers (fitted with rigging frames) to MINA in flown and groundstacked arrays. NOTE: For complete information on configuration and load ratings for the MTF-M’elodie/ MINA, as well as for other rigging accessories, refer to the MG-MINA Assembly Guide (PN 05.
CHAPTER 5: QUICKFLY RIGGING MYA-MINA MOUNTING YOKE The MYA-MINA mounting yoke flies up to three MINA loudspeakers from a single hanging point using a C-clamp or equivalent. The yoke includes two bracketing options: the MPA-2 for attaching to two cabinets, and the MPA-3 for attaching to one or three cabinets. The brackets bolt directly to the M6 threads in the end frames for one of the cabinets. For flown applications, the yoke supports up to 30 degrees of uptilt and severe downtilts of up to 90 degrees.
MINA OPERATING INSTRUCTIONS Pole-Mounting MINAs with the MYA-MINA Up to two MINA loudspeakers can be pole-mounted with the MYA-MINA mounting yoke. For pole-mount applications, the yoke support up to 30 degrees of downtilt and severe uptilts of up to 90 degrees. When pole-mounting MINAs with the yoke, a third-party pole-mount adapter is required. also be flown from trusses using C-clamps or equivalent.
CHAPTER 5: QUICKFLY RIGGING FLOOR- AND POLE-MOUNTING MINAS WITH THE MYA-MINA Up to two MINA loudspeakers can be floor- or polemounted with the MUB-MINA mounting yoke. For floor- and pole-mounted applications, the MUB-MINA can be oriented for either maximum downtilt (with the slot near the rear of the loudspeakers) or maximum uptilt (with the slot near the front of the loudspeakers).
MINA OPERATING INSTRUCTIONS Safety Guidelines for the MCF-MINA Caster Frame ■ Do not stack more than five MINAs. ■ Avoid moving stacks in the front-to-back direction of the MINAs (the long side); always move stacks sideways to avoid tipping. 6 3 0 11 9 6 3 0 11 9 6 3 0 11 9 6 3 0 11 9 6 3 0 MCF-MINA Caster Frame with MINA Stack TIP: The MG-MINA grid can travel installed on top of MINA stacks.
CHAPTER 5: QUICKFLY RIGGING 38
CHAPTER 6: RMS REMOTE MONITORING SYSTEM The MINA loudspeaker includes an RMS module, which allows the loudspeaker to be connected to an RMS network. RMS provides real-time monitoring of multiple Meyer Sound self-powered loudspeakers from a Windows-based computer. The RMS host computer communicates with Meyer Sound loudspeakers (equipped with RMS modules) via a simple twisted pair network, or an Ethernet network using an FT-10 to Ethernet adapter. NOTE: For the latest RMS system requirements, go to www.
CHAPTER 6: RMS REMOTE MONITORING SYSTEM The RMS software displays all loudspeakers on the network in a panel with icons, Meter views, and Text views that can be customized to suit your needs. Loudspeaker data is updated 2–5 times per second. Individual loudspeakers can be physically identified with the Wink option in RMS, which lights the Wink LED on the RMS module for that particular loudspeaker.
MINA OPERATING INSTRUCTIONS Remote Mute Switch The recessed Remote Mute switch on MINA’s RMS user panel determines whether the RMS software can control muting and soloing of the loudspeaker. MINA ships from the factory with the switch enabled. RMS Module ■ Disable: When the Remote Mute switch is set to Disable (to the left), MINA cannot be muted and soloed from the RMS software. ■ Enable: When the Remote Mute switch is set to Enable (to the right), MINA can be muted and soloed from the RMS software.
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CHAPTER 7: SYSTEM DESIGN AND INTEGRATION TOOLS Meyer Sound offers two comprehensive tools to assist with the acoustical and functional requirements of system design and optimization. This chapter introduces you to MAPP Online Pro, Meyer Sound’s patented online acoustical prediction tool, and SIM 3, a comprehensive system for measurement and analysis.
CHAPTER 7: SYSTEM DESIGN AND INTEGRATION TOOLS Using MAPP Online Pro Source Independent Measurement Technique MAPP Online Pro is compatible with the following operating systems: The SIM 3 audio analyzer implements Meyer Sound’s source independent measurement technique, a dual-channel method that accommodates statistically unpredictable excitation signals. Any excitation signal within a desired frequency range can be used to obtain highly accurate measurements for acoustical or electronic systems.
APPENDIX A: OPTIONAL RAIN HOOD A weather-protected version of MINA is available with a rain hood that safeguards the loudspeaker’s electronics from the elements when used outdoors. The rain hood — which latches to the user panel and is easily installed and removed as necessary — is made of a durable, high-impact polycarbonate that is also transparent, allowing the loudspeaker's connections and LEDs to be visible. MINA’s heat sink does not require a rain hood as it is water-sealed.
APPENDIX A: OPTIONAL RAIN HOOD 46
APPENDIX B: MINA SPECIFICATIONS ACOUSTICAL Operating Frequency Range 66 Hz – 18 kHz Note: Recommended maximum operating frequency range. Response depends on loading conditions and room acoustics. Frequency Response 70 Hz – 17.5 kHz ±4 dB Note: Measured free field with 1/3 octave frequency resolution at 4 meters. Phase Response 1 kHz to 18 kHz ±30° Maximum Peak SPL 128 dB Note: Measured with music referred to 1 meter.
APPENDIX B: MINA SPECIFICATIONS AMPLIFIER Type Three-channel, Class-D Output Power 975 W total (three channels; 2 x 375 W, 1 x 225 W) Note: Wattage rating based on the maximum unclipped burst sine-wave rms voltage the amplifier will produce into the nominal load impedance: 39 V rms low channels, 43 V rms high channel.
MINA OPERATING INSTRUCTIONS Humidity To 95% at 35° C Operating Altitude To 4600 m (15,000 ft) Non operating Altitude To 95% at 35° C Shock 30 g 11 msec half-sine on each of 6 sides Vibration 10 Hz – 55 Hz (0.010 m peak-to-peak excursion) Rheinlan UV (Pending) rt . In c a, o of N C d T MINA COMPLIANCE h A e ri c m US (Pending) MINA DIMENSIONS 20.27 [515 mm] 7.60 [193 mm] 18.53 [471 mm] 8.38 [213 mm] 10° 5.85 [149 mm] 3.56 [90 mm] 15.
APPENDIX B: MINA SPECIFICATIONS MINA Dimensions with Rain Hood 20.27 [515 mm] 7.60 [193 mm] 3.75 [95 mm] 18.53 [471 mm] 8.38 [213 mm] 10° 5.85 [149 mm] 4.19 [106 mm] 18.95 [481 mm] 15.32 [389 mm] MINA Dimensions with Rain Hood 50 3.
Meyer Sound Laboratories Inc. 2832 San Pablo Avenue Berkeley, CA 94702 www.meyersound.com T: +1 510 486.1166 F: +1 510 486.835 © 2010 Meyer Sound. All rights reserved. MINA — 05.207.005.
