Meyer Sound Documentation

Please read this statement carefully and in its entirety. It contains important information regarding safety issues, including guidelines for general safe use of rigging systems as well as advisories on government regulations and liability laws.

This Statement assumes that the owners and/or users of a Meyer Sound QuickFly® system are knowledgeable and experienced in the areas of rigging and flying loudspeaker systems. Many issues of crucial concern, such as the determination of appropriateness and condition of venue rigging points, cannot be addressed here. Therefore, the

user must assume all responsibility for the appropriate use of QuickFly systems in any particular location or circumstance.

The suspension of large, heavy objects in public places is subject to numerous laws and regulations at the national/ federal, state/provincial, and local levels. The user must assume responsibility for making sure that use of any QuickFly system and its components in any particular circumstance or venue conforms to all applicable laws and regulations in force at the time.

Load Ratings and Specifications

Long-term safe operation is a central concern in the design and manufacture of any rigging/flying system. Meyer Sound has taken great care in material selection and

component design. After manufacture, all load-critical system components are individually inspected. All load ratings and other specifications are the result of accepted engineering practice and careful testing.

To analyze load ratings, use Meyer Sound’s MAPP System Design and Prediction Tool. MAPP supports custom input of Meyer Sound loudspeaker system configurations and determines safety in 5:1.

Users are advised to check meyersound.com or contact Technical Support at regular intervals to check for updates.

Regulatory Compliance

The design and working load limit (WLL) ratings of the QuickFly system are intended to be in compliance with all known regulatory statutes currently applicable in the United States. However, as noted above, there are wide variations internationally in the regulations and practices applying to suspension of sound systems in public places. Although regulations in the United States are generally among the most stringent, safety codes may be even stricter in a few localities (such as those highly prone to earthquakes). In addition, applicable safety codes are open to interpretation:

Government officials in one location may have a stricter interpretation than another local official, even when operating under the same regulations and in the same legal jurisdiction.

Safety Responsibilities “Above the Hook”

In most touring applications of rigging systems, the audio equipment provider is normally responsible for ensuring the safety of the suspension system only below the attachment point. The safety and suitability of the attachment point above the uppermost Meyer Sound product is generally seen as the responsibility of the venue owner or operator. However, this distinction (“above the hook” versus “below the hook”) can be open to interpretation. Touring system operators should make certain that attachment points are approved and suitably

load rated, and that the points used are those identified as such by the venue owner or engineer of record. As an extra precaution, careful inspection of the attachment points is advised before attaching a load, particularly in older venues or those hosting frequent events using large sound and lighting systems. IN ANY CASE, MEYER SOUND QUICKFLY SYSTEMS ARE INTENDED ONLY FOR SUSPENSION FROM APPROVED RIGGING POINTS, EACH KNOWN TO HAVE AMPLE WLL MARGINS FOR THE SYSTEM COMPONENTS SUSPENDED BELOW THEM.

Inspection and Maintenance

The Meyer Sound QuickFly systems are an assembly of mechanical devices, and are therefore subject to wear and tear over prolonged use, as well as damage from corrosive agents, extreme impact, or inappropriate use.

BECAUSE OF THE SAFETY ISSUES INVOLVED, USERS MUST ADOPT AND ADHERE TO A SCHEDULE OF REGULAR INSPECTION AND MAINTENANCE. IN TOURING APPLICATIONS, KEY COMPONENTS MUST BE INSPECTED

BEFORE EACH USE. Such inspection includes examination of all load-bearing components for any sign of undue wear, twisting, buckling, cracking, rusting, or other corrosion. In regard to rust and corrosion, the main components of a QuickFly system are either protected by an exterior coating or made from stainless steel, which is resistant to rust and resistant to most corrosive fluids. Nevertheless, normal use and shipping vibrations can wear through the protective coatings, and extremely corrosive fluids (such as battery acid) can cause severe damage with prolonged exposure even

to protected parts. Particular attention should be given to pins, screws, bolts, and other fasteners to make certain the fittings are tight and secure. Metal seams and welds should be examined for any sign of separation or deformation. Meyer Sound strongly recommends that written documentation

be maintained on each QuickFly system, noting date of

inspection, name of inspector, points of system checked, and any anomalies discovered.

Annual Comprehensive Examination and Test Program

In addition to routine checks on the road for touring systems, Meyer Sound also recommends a careful, comprehensive system examination and testing “at home” in the warehouse or other appropriate location at regular intervals. Such at home examinations and tests should occur at least once

a year, and should include a careful inspection of each component under ideal lighting conditions, and then a final comprehensive check of the entire system after it has been flown.

If any anomalies or defects are discovered that could possibly affect the safety or integrity of the system, affected parts or subsystems should be replaced in their entirety before that part of the system is flown again.

Replacement Parts

Any component found to be defective, or any safety-related component even suspected of being defective, should be replaced with the equivalent, approved part. Parts specific to a QuickFly system should be ordered directly from Meyer Sound. No attempt should be made to substitute what appears to be equivalent or “mostly the same” generic replacements. Some parts used in QuickFly systems are identical to those used in other rigging applications. To the best of our knowledge, most of these suppliers are reputable and their products are reliable. However, Meyer Sound has no way of assuring the quality of products made by these various suppliers. Therefore, Meyer Sound is not responsible for problems caused by components that were not supplied by Meyer Sound.

Training

QuickFly systems are relatively straightforward and easy to use. However, they should only be used by persons trained in the use of loudspeaker rigging systems, who have mastered key points of assembly, rigging and flying.

MAPP

MAPP assumes the top grid is picked up by a front and rear motor along the perimeter of the grid, directly to the middle or outer pickup points, but not to the center bar pickup points. Other rigging configurations may have reduced load capacity. These cases should be reviewed by proper personnel to verify load capacities for alternate configurations.

Limitations and Disclaimer

The safety limit analysis provided by MAPP does not apply, and may not be relied upon, if the loudspeaker system (1) has been improperly installed or maintained, (2) the rigging or loudspeakers of the system have been damaged prior to installation, (3) the indicated configuration of the system has been altered, (4) any weight has been added to the indicated configuration, or (5) the system is in an outdoor venue and remains installed during strong wind conditions. MEYER

SOUND ASSUMES NO RESPONSIBILITY FOR ANY PART OF AN INSTALLATION “ABOVE THE HOOK” OR WHERE ANY OF THE FOREGOING LIMITATIONS APPLY.

Understanding power distribution, voltage and current requirements, and electrical safety guidelines is critical to the safe operation of 2100-LFC loudspeakers.

Sufficient power must be provided for the loudspeakers to accurately reproduce the full dynamic range of the input signal, especially during periods of maximum acoustic output.

AC Power Distribution

All components in an audio system (self-powered loudspeakers, mixing consoles, processors, etc.) must be properly connected to an AC power distribution system, ensuring that AC line polarity is preserved. All the grounding points of the audio system components must be connected to a single node or common point using the same cable gauge (or larger) as the neutral and line conductors.

Caution

• The nominal operational AC mains voltage range is 200–240 V AC.

• The voltage between the earth/ground and line should never exceed 264 V AC or be less than 160 V AC.

• Before applying AC power to any Meyer Sound self-powered loudspeaker, make sure the voltage potential difference between the neutral and earth/ground conductors is less than 5 V AC when using single-line AC wiring (LINE - NEUTRAL - EARTH/GROUND).

• Before applying AC power to any Meyer Sound self-powered loudspeaker, make sure the voltage potential difference between the neutral and earth/ground conductors is less than 5 V AC when using single-line AC wiring (LINE - NEUTRAL - EARTH/GROUND).

• Before applying AC power to any Meyer Sound self-powered loudspeaker, make sure the voltage potential difference between the neutral and earth/ground conductors is less than 5 V AC when using single-line AC wiring (LINE - NEUTRAL - EARTH/GROUND).

Branch Circuits

To reduce the number of branch circuits, it is common to connect two 2100-LFC loudspeakers to one branch circuit, provided the circuit breaker is sufficiently rated. To reduce the impedance of the conductors, minimize the length of cable after the branch circuit has been “split.” Typically, a single circuit cable is split very near the loudspeakers using a molded split, junction box, or wye cable.

230 V AC, 3-phase Wye System (Single Line)

Line-Neutral-Earth/Ground

The figure below illustrates the secondary of a 230/400 V AC, 3-phase Wye distribution system. Each loudspeaker is connected to one of the lines, the neutral, and the earth/ground. This distribution system delivers 230 V AC to each loudspeaker.

Caution

For 230/400 V AC, 3-phase Wye systems, never connect two lines to the AC input of 2100-LFC. 400 V AC significantly exceeds the upper voltage limit of 264 V AC and will damage the loudspeaker.

120 V AC, 3-phase Wye System (Two Lines)

Line-Line-Earth/Ground

The figure below illustrates the secondary of a 120/208 V AC, 3-phase Wye distribution system. Each loudspeaker is connected to two lines and the earth/ground. This configuration is possible because 2100-LFC loudspeakers tolerate elevated voltages from the earth/ground conductor and does not require a neutral line. This distribution system delivers 208 V AC to each loudspeaker.

Three-Phase, 120/208 Volt AC Transformer Secondary, Wye Configuration and Loudspeaker Connections

Caution

Do not connect a 2100-LFC loudspeaker to only one line of a 120/208 V AC Wye service as the voltage delivered will be 120 V AC, below the operating voltage range.

AC Input

The 2100-LFC user panel includes an AC inlet connector. The 3-conductor Neutrik powerCON TRUE1 True Outdoor Protection (TOP) locking connector supplies electrical power to the loudspeaker, as shown in the figure below.

Caution

• Presence of water or other conductive liquids in the AC connectors creates a shock/electrocution hazard.

• The inlet connector is certified for outdoor protection (IP65, UL50E) only when mated with a Neutrik powerCON TRUE1 TOP cable-mount connector, or when the connector is not in use, when the sealing cap is fully inserted.

• Check the sealing cap for moisture before covering the connector. If wet, dry the cap before covering the connector to avoid introducing liquid to the connector.

User Panel, Power Inlet, Neutrik powerCON TRUE1 TOP Connector

The powerCON TRUE1 TOP connectors can be engaged or disengaged while the circuit is energized without damaging the connectors over time, provided both connectors are rated for energized connection.

Caution

Make sure the AC inlet connector assembly is secure and has not been damaged during prior use or transportation before connecting the power cable.

Assembly of Power Cables

A cable-mount Neutrik powerCON TRUE1 TOP connector is included with each 2100-LFC loudspeaker (Neutrik NAC3FX- W-TOP) enabling users to assemble power cables to meet their needs.

Caution

• Correct assembly of the powerCON TRUE1 TOP connectors is required to achieve the IP65 rating, preventing water ingress. Improperly assembled connectors pose a shock/ electrocution hazard.

  Visit the Neutrik website (neutrik.com) to download the cable preparation and connector assembly instructions for the powerCON TRUE1 TOP NAC3FX-W-TOP cable-mount connector.

• For 2100-LFC power cables, all conductors must be 12 AWG (2.5 mm²).

Use only cable with an outer jacket diameter between 1/4-in [6 mm] and 1/2-in [12 mm].

For the inlet end of the cable, the plug must be rated for at least the current draw of a 2100-LFC (1200 watts divided by supply voltage) and be approved for use in the region where the product will be used.

The pins of the powerCON TRUE1 TOP cable mount connector are labeled as follows:

• L (Line)

• N (Neutral)

• (Protective Earth or Ground)

  

  Neutrik powerCON TRUE1 TOP Cable Mount Connector

  Caution

  Careful attention should be paid when terminating these connectors to ensure the proper conductor of the cable is connected to the intended terminal. The terminal identification markings inside the connector can be difficult to identify. After terminating the conductors, we strongly advise using a continuity meter to verify the proper connections are made, preventing a shock hazard and/or damage to the loudspeaker.

How AC power cables are wired is determined by the type of AC power distribution system used (see AC Power Distribution.

Caution

When wiring AC power cables and distribution systems, it is important to preserve AC line polarity and connect the earth ground at both ends of the cable.

2100-LFC Voltage Requirements

The AC mains voltage range at the loudspeaker AC inlet must be between 160 V AC and 264 V AC while the loudspeaker is operating, including periods of peak acoustic output when the loudspeaker draws maximum current.

Because the 2100-LFC behaves as a constant power load, current increases if the voltage decreases at its AC inlet. The maximum round-trip resistance of the cable for a single 2100-LFC should not exceed 5 Ohms for a 230 V AC source voltage because the AC Mains voltage will fall below 160 V AC at the AC inlet.

Caution

2100-LFC may be damaged or may malfunction if the inlet voltage is greater than 264 V AC or less than 160 V AC.

Circuit Breaker Requirements

The circuit breakers used in the Meyer Sound MDM-5000 are well suited for use with 2100-LFC loudspeakers and other Meyer Sound products:

• European MDM-5000 includes ETI model number: KZS- 1M 1p+N A C16/0.03, 6kA, which includes an RCD (residual current device) with a C-type tripping time constant and 30 mA RCD.

• US MDM-5000 includes Eaton model: QCR2020 - CIRCUIT BREAKER 2-Pole, 20 A, 120/240 V AC

Circuit protection devices for main and branch circuits of any power distribution system used in conjunction with 2100-LFC loudspeakers should use similarly specified devices to avoid nuisance tripping.

Note

Many RCCB’s (residual current circuit breakers) are sensitive to high-frequency noise in the Line-Neutral path and may false/nuisance trip. If required, make sure residual current devices are not sensitive to high-frequency noise or artifacts. Conductor-to-conductor capacitance can cause an imbalance between the current carrying conductors in a cable or a conduit, potentially causing RCCB nuisance tripping. Consult with a licensed electrician or electrical engineer when designing electrical distribution systems.

Power Supply

The 2100-LFC’s power supply eliminates high inrush currents with soft-start power up, suppresses high-voltage transients up to several kilovolts, and filters common mode and differential mode radio frequencies (EMI).

Powering on 2100-LFC

When powering on 2100-LFC, the following startup events take place over several seconds:

• The Active/Status LEDs flash during initial startup.

• When both the Active/Status LEDs turn solid green, the loudspeaker is unmuted and ready to reproduce audio.

Caution

• If the Active/Status LEDs do not turn solid green after 30 seconds, remove AC power and verify that the voltage is within the required range and the conductors of the power cable are connected to the proper terminals of the connectors. If the problem persists, contact Meyer Sound Technical Support.

• If the Active/Status LEDs pulse red or yellow after the loudspeaker has been powered on longer than 30 seconds, an error has been detected. The details of the error are reported in Meyer Sound’s Nebra software via the network connection.

Electrical Safety Guidelines

Make sure to observe the following important electrical and safety guidelines.

• Do not operate the unit if the power cable is frayed or broken.

• Use the cable rings on the rear of the cabinet to reduce strain on the connected cables. Do not use the cable rings for any other purpose.

The user panel located on the rear of 2100-LFC loudspeakers includes audio input connectors, one for analog audio, the other for Milan AVB digital audio.

2100-LFC User Panel, Audio Inputs, Sealing Caps Not Depicted

Both audio inputs are always active. If signal is present at both inputs, both signals are reproduced. When using one input as a backup to the other, utilizing GALAXY processor input or output mutes is one strategy to switch between input types.

The analog and Milan inputs will arrive at the loudspeaker at different times due to transport time of the Milan signal through the network, usually less than 2 ms. The latency of the Milan signal is dependent on the number of network switch hops and the presentation time set in software. To synchronize the signals, determine the time offset and add that amount of delay to the signal reproduced earliest, usually the analog input signal.

If one input is used as a backup, time aligning it with the primary input provides a smoother transition when the signal to the primary input is muted and the backup is unmuted.

Synchronizing the inputs also preserves the time alignment with other system components regardless of which input is receiving signal.

Audio Connectors

The user panel includes two 3-pin Neutrik XLR True Outdoor Protection (TOP) connectors for analog audio input and audio loop output. The network connector is a Neutrik etherCON True Outdoor Protection (TOP).

Caution

• The analog and network chassis connectors are certified for outdoor protection (IP65, UL50E) only when mated with the Neutrik TOP cable-mount connectors, or when the connector is not in use, when the sealing cap is fully inserted

• Check the sealing caps for moisture before covering the connectors. If wet, dry the caps before covering the connectors to avoid introducing liquid into the connectors.

• Always seal the connectors with the sealing caps when the connectors are not in use.

Calculating Analog Input Load Impedance

To avoid distortion when looping multiple loudspeakers, make sure the source device can drive the total load impedance of the looped loudspeakers. In addition, the source device must be capable of producing +24 dBU into 50 Ohms to produce the maximum peak SPL over the operating bandwidth of the loudspeaker.

To calculate the load impedance for the looped loudspeakers, divide 10 kOhms (the input impedance for a single loudspeaker) by the number of looped loudspeakers. For example, the load impedance for ten 2100-LFC loudspeakers is 1000 ohms (10 kOhms / 10). Most source devices are capable of driving loads no less than 10 times their output impedance. To drive this number of looped loudspeakers, the source device should have an output impedance of 100 ohms or less (1000 ohms / 10). Galileo GALAXY outputs have an output impedance of 50 ohms, capable of driving the load of up to 20 loudspeakers with 10 kOhm inputs without distortion.

Caution

Make sure all cabling for looped loudspeakers is wired correctly (Pin 1 to Pin 1, Pin 2 to Pin 2, and so forth) to prevent the polarity from being unintentionally reversed. If one or more loudspeakers in a system receive audio signals that are of the opposite polarity, frequency response and coverage will be significantly degraded.

Analog Audio Input (XLR 3-Pin Female)

The XLR 3-pin female connector labeled “Input” accepts balanced audio signals with an input impedance of 10 kOhm. The connector uses the following wiring scheme:

• Pin 1 — 1 kOhm to chassis and earth ground (ESD clamped)

• Pin 2 — Signal (+)

• Pin 3 — Signal (–)

• Case — Earth (AC) ground and chassis

Pins 2 and 3 carry the input as a differential signal. Pin 1 is connected to earth through a 1 kOhm, 1000 pF, 15 V clamped network. This circuitry provides virtual ground lift for audio frequencies while allowing unwanted signals to bleed to ground. Make sure to use balanced XLR audio cables with pins 1, 2, and 3 connected on both ends. Connecting the signal ground at only one end is not recommended. Shorting the signal ground conductor to the connector case may cause a ground loop, resulting in hum.

Note

If unwanted noise or hiss is produced by the loudspeaker, disconnect the audio signal cable from the loudspeaker input. If the noise stops, there is most likely nothing wrong with the loudspeaker. To locate the source of the noise, check the audio cable, source audio, AC power, and electrical ground.

Analog Audio Loop (XLR 3-Pin Male)

The XLR 3-pin male connector labeled “Loop” allows multiple loudspeakers to be looped from a single audio source.

This connector uses the same wiring scheme as the input connector. For applications that require one drive line to provide signal to multiple 2100-LFC loudspeakers, connect the output of the first loudspeaker to the input of the next loudspeaker, and so forth.

Note

The connector labeled “Loop” is wired in parallel to the input connector and transmits the unbuffered source signal whether the loudspeaker is powered on or off.

Milan Endpoint Module

The Milan Endpoint module (Type 3M Audio Input Module) shown in the figure below, includes a Neutrik etherCON TOP connector, an Ethernet connectivity LED, an On/Status LED, and a Wink button/LED.

2100-LFC User Panel, Milan Endpoint Module

Network Connector

The etherCON TOP connector provides the network connection for transmission of a digital audio signal to the loudspeaker and the transmission of telemetry data from the loudspeaker.

Tip

Use an Avnu-certified network switch when the Milan digital audio input is used. For a list of Avnu certified AVB switches please refer to the certification pages at avnu.org.

When the Milan input is not used, a standard Ethernet network (IEEE 802.3 compliant, supporting at least 100 MB/s, full-duplex) is capable of transmitting the telemetry data.

Digital Audio Input

The Milan Endpoint accepts a single channel of a Milan digital audio stream as specified by the Avnu Alliance. To utilize the Milan input, connect the loudspeaker to an Avnu-certified network switch.

When a Milan Endpoint loudspeaker and a computer are connected to the same network via an Avnu-certified network switch, the loudspeaker will be listed in Meyer Sound’s Nebra software or other AVB controller software. The Milan Endpoint loudspeaker (Listener) must be assigned to an available audio source channel (Talker) for the loudspeaker to reproduce the audio stream transmitted by the Talker.

For Milan audio transport, the network connection speed between the last network switch and a Milan Endpoint is 100 bT, 100 Mb/ second. The connection speed between network switches transporting Milan digital audio signals is 1000 bT, 1 G/second.

Telemetry

Loudspeakers with Milan Endpoints transmit telemetry data via the network connection. To view the telemetry data, connect the loudspeaker(s) and a computer to a network switch. The loudspeaker telemetry data is displayed in Meyer Sound’s Nebra software which displays extensive system status and performance data for each loudspeaker, including amplifier voltage, limiting activity, power output, fan speed and driver status. A mute function is available.

An Avnu-certified switch is not necessary when the network is only transporting telemetry data. When the network only transports telemetry data, the connection speed from end-to- end is 100 bT, 100 Mb/second.

Wink Function

The Wink function facilitates the identification of physical loudspeakers listed in Meyer Sound’s Nebra software. When making digital audio signal connections in software, it’s necessary to know which physical loudspeaker the signal is routed to. A network connection between the loudspeaker and a computer running Nebra software is required.

When active, the Wink function is indicated in four locations: Nebra software, the Wink push-button on the user panel of the loudspeaker, the LED bar on the amplifier cowl, and two LED strips on the front of the cabinet.

Once a Milan Endpoint has been detected and auto-discovered in Nebra software, the loudspeaker’s detail page includes a button with an icon of an eye. Clicking this button toggles the Wink function, which is indicated in the software. When the Wink function is active, the Wink push-button on the user panel of the loudspeaker, the LED bar on the amplifier cowl, and the two LED strips on the front of the loudspeaker illuminate. The wink function times out after 10 seconds.

Wink/Activity LED (Green)

To activate the Wink function from the loudspeaker, press and hold the Wink button down while observing the On/ Status LED, which turns red and then off. Release the Wink button when the On/Status LED turns off, activating the Wink function. The Wink LED turns green for 10 seconds. If the Wink button remains depressed, the On/Status LED will turn red again and the Wink function will remain off.

To turn off the Wink function, wait 10 seconds for it to time out or depress and hold the Wink button, the On/Status LED will turn red. Wait until the On/Safety LED turns off, then release the Wink button.

On/Status LED, Wink Button/LED, Network Connectivity LED, and Network Connector.

Ethernet/Network Connectivity LED

The Ethernet connectivity LED immediately to the left of the network connector) turns solid yellow when a 100 bT link is established; otherwise, it is off.

On/Status and Limiting Indication

During normal operation, when 2100-LFC is powered on, the On/Status LED on the user panel is solid green. Limiting activity is indicated by the On/Status LED illuminating yellow while limiting is active.

When limiting is engaged, the channel’s gain is reduced. The limiter protects the driver and prevents signal peaks from causing excessive distortion in the amplifier, thereby preserving headroom and maintaining a smooth frequency

response at high levels. When source levels return to normal, below the limiter’s threshold, the LED turns green and limiting ceases.

The loudspeaker performs within its acoustical specifications at normal temperatures when the On/Status LED is green, or when limiting is not continuous. During continuous limiting, the loudspeaker is nearing its operational limits, resulting in the following effects:

• Increases to the input level have no effect.

• Distortion increases due to clipping and nonlinear driver operation.

• The drivers are subjected to excessive heat and excursion, which compromises their life span and may eventually damage them.

  Caution

  The On/Status LED indicates when a safe, optimum level is exceeded. If a 2100-LFC loudspeaker system begins to limit before reaching the desired acoustic output, consider adding more loudspeakers to the system.

2100-LFC Cooling System

The 2100-LFC employs forced-air cooling with variable-speed fans to prevent the amplifier or driver from overheating. The amplifier module fans draw air in through the inlet grille on the rear below the user panel and through the vent at the bottom of the amplifier cowl. The exhaust exits through the upper-left exhaust vent next to the user panel. The driver cooling system draws air into the lower-left inlet grille, which exits via the front-facing acoustic chamber ports, shown in the figure below.

The two vent grilles to the right of the user panel are provisional, not functional.

Caution

• To keep 2100-LFC from overheating, allow at least six inches (15 cm) of space with unobstructed airflow behind the enclosure for proper ventilation.

• Regularly inspect the foam and screen behind the air intake grilles located below the user panel, at the bottom of the amplifier cowl, and the lower-left intake next to the user panel. If a significant amount of particulate has accumulated on the screen or foam, power down the loudspeaker for at least one minute and remove the cover of the contaminated intake(s). Vacuum, then rinse the screen and foam with water until the particulate is removed. Allow the screen and foam to dry completely, then reassemble.

2100-LFC Amplifier Ventilation

Caution

If a system being operated in a hot environment includes 2100-LFC loudspeakers and the telemetry data (Nebra software) indicates very high thermal conditions, consider adding more loudspeakers to the system.

Tip

When 2100-LFC is connected to a network, Meyer Sound’s Nebra software displays telemetry metrics, including the fan status and operating temperature.

Cable Rings

Two cable rings are provided on the rear of the 2100-LFC cabinet. Power and audio cables should be tied off to these rings to reduce strain and prevent damage to them.

Caution

Cable rings should only be used to reduce strain on cables and not be used for any other purpose.

Cables Tied Off to Cable Ring

The available rigging hardware, accessories, and 2100-LFC loudspeakers are listed in the table below.

MTG-2100 Top Grid Kit

The MTG-2100 Top Grid Kit provides mechanical connection between hoisting mechanism(s) and 2100-LFC cabinets.

Hoists, MTG-2100 Grid Kit (highlighted), and 2100-LFC Cabinet

MTG-2100 Top Grid Kit Contents

The MTG-2100 Grid Kit (PN 40.328.400.01) includes the grid and four quick-release pins.

Table 2. MTG-2100 Top Grid Kit Contents

Image	Qty	Part Number	Description
	1	45.324.400.02	134.051
	1	134.051	7/16 x 1.5-inch QRP with lanyard (red button)

MTG-2100 Load Ratings

The MTG-2100 is designed to support only 2100-LFC cabinets. When the grid is used to suspend 2100-LFC, it has the following maximum load ratings:

• Up to sixteen (16) 2100-LFC, no up or down tilt, grid at zero degrees.

• Up to eleven (11) 2100-LFC, any grid angle achievable using the grid alone.

Caution

• Always model each array configuration in Meyer Sound’s MAPP System Design and Prediction software to determine if the array configuration is within safety limits (5:1 safety factor). Do not suspend an array when the Safety Limits Analysis in MAPP displays “Configuration has exceeded the rated load capacity.”

• The weight of any additional items suspended with the array, e. g., cable, motors, motor chain, must be considered when calculating the weight being suspended

• Always use properly rated rigging hardware, e.g., wire rope, shackles, hoists, etc. to suspend any load.

• Always use the 7/16 x 1.50-inch QRP (lanyard, red button, PN 134.051) included with the MTG-2100 Grid Kit to secure the MTG-2100 Grid to the top 2100-LFC cabinet. These pins are longer than those used for cabinet to cabinet connections.

• Do not transport 3-high stacks of 2100-LFC with the MTG-2100 Grid Kit on top. This exceeds the safety limits for tip-over, which may cause injury.

Tip

Do not transport 3-high stacks of 2100-LFC with the MTG-2100 Grid Kit on top. This exceeds the safety limits for tip-over, which may cause injury.

MTG-2100 Grid Hardware Connections

The MTG-2100 Grid does not have a front or rear. It can be turned 180 degrees horizontally without changing its alignment to the cabinets.

When suspended, user-provided 3/4-inch or 7/8-inch shackles connect the hoist(s) to the MTG-2100 Grid. The shackles are connected to the grid, both front and rear. The MTG-2100 must be suspended from both connection points, 24 in (61 cm) apart from each other.

When suspending the MTG-2100 Grid from a single hoist, the minimum bridle leg length is 18 in (46 cm) based on the bridle apex angle being less than 90 degrees.

2100-LFC GuideALinks

2100-LFC GuideALinks Extended

The MTG-2100 Grid connects to the GuideALinks of the top 2100-LFC of a flown array with four 7/16 x 1.50-inch QRP (lanyard, red button, PN 134.051) included with the MTG- 2100 Grid Kit (Figure 17). These quick-release pins are not interchangeable with any other pins used with a 2100-LFC array.

Caution

• During array assembly, ensure the quick-release pins are fully inserted and locked (not able to be removed without depressing the quick-release pin lock button).

• The quick-release pins are secured to the 2100-LFC loudspeakers with lanyards. For all pin locations, only use pins whose lanyards are attached to the same cabinet when securing GuideALinks.

• 2100-LFC GuideALinks must be secured with the included quick-release pins. At no time should the weight of the loudspeaker rest on the GuideALink knobs when the links are fully extended (without the pins inserted). GuideALink knobs are only used to extend and retract the links.

The locations labeled “B” align with the mounting holes of third-party brackets used to secure laser/inclinometers, e. g., ProSight and ProSight2 mounts. Holes labeled “A” and “C” can accommodate the mounting of custom accessories. For dimensional information, please refer to the CAD (.dwg) drawings available at meyersound.com.

MTG-2100 Grid, Top View

2100-LFC GuideALinks

2100-LFC cabinets are equipped with four captive GuideALinks providing connection to the cabinet above, as shown in the bottom figure, or to the MTG-2100 Grid Kit (Figure 17). Located at the top corners of the cabinet, the GuideALinks extend into the GuideALink sockets of the cabinet above it or into the GuideALink sockets of the MTG-2100 Grid Kit. The splay angle between cabinets is always zero degrees.

GuideALinks Connect 2100-LFC Cabinets

To raise and lower the GuideALinks, remove the quick-release pin, grasp the GuideALink lever, then raise or lower the GuideALink. The GuideALink position is secured by inserting a quick-release pin when a GuideALink is fully raised or lowered.

2100-LFC GuideALink Levers

Caution

• During array assembly, ensure the quick-release pins are fully inserted and locked (not able to be removed without depressing the quickrelease pin lock button).

• 100-LFC GuideALinks must be secured with the included quick-release pins. At no time should the weight of the loudspeaker rest on the GuideALink Levers when the links are fully extended (without the pins inserted). GuideALink Levers are only used to extend and retract the links

MCF-2100 Caster Frame

The MCF-2100 Caster Frame safely transports up to three 2100-LFC cabinets or two cabinets and the grid making it easy to assemble and disassemble arrays in groups of two or three cabinets.

MCF-2100 Caster Frame

The caster frame includes four fixed attachment points (GuideALink tabs) that align with the GuideALink sockets of the bottom 2100-LFC of an array. The caster frame is secured with the quick-release pins included with 2100-LFC cabinets, 7/16 x 0.90-inch QRP (black button, PN 134.065).

Caution

Do not transport 3-high stacks of 2100-LFC with the MTG-2100 Grid on top. This exceeds the safety limits for tip-over, which may cause injury. Two 2100-LFC cabinets with the grid or three 2100-LFC cabinets (no grid) are the maximum safe configurations of products transported on MCF-2100 caster frames.

MCF-2100 Caster Frame with 2100-LFC and MTG-2100 Grid

MCF-2100 Caster Frame Dimensions

MCF-2100 Caster Frame with 2100-LFC and MTG-2100 Grid

Tip

Durable, 2-high and 3-high nylon covers are available to ensure the 2100-LFC cabinets are protected during transport.

The caster frame includes forklift guides between the wheels to prevent damage to them. If desired, the forklift guides can be removed without affecting the structural integrity. Remove the three bolts securing each of the guides.

MCF-2100 Caster Frame, Forklift Guides Installed

MCF-2100 Caster Frame, Forklift Guides Detached

Safety Guidelines for the MCF-2100 Caster Frame

• While the MCF-2100 Caster Frame supports up to three cabinets, use extreme caution when moving the caster frame and cabinets to avoid tipping.

• When rolling a caster frame and cabinets, slow down when the surface is uneven, e.g., cracks in concrete floors, cable ramps, transitions in floor coverings, etc.

• Do not move stacks in the front-to-rear direction of the 2100-LFC cabinets (the long side) as the risk of injury increases. Always move stacks sideways to avoid tipping.

• When moving the caster frame with 2100-LFC cabinets, always use the handles of the cabinets and push or pull from one of the ends.

• To avoid tipping, transport stacks with all the GuideALinks connected to adjacent cabinets.

• The caster frames must be removed before the array is flown.

MCF-2100 Caster Frame with 2100-LFC Stack

Assembling Arrays

Warning

BEFORE ASSEMBLING AN ARRAY, REVIEW the Safety Statement for Rigging

User-provided Equipment

Depending on the application and the needs, the following equipment may be considered:

• hoists, motorized

• rated rigging hardware, e. g., shackles, wire rope, pear rings, etc.

• tape measure or laser distance measurement device

• load cells - used to measure rigging loads

Note

When using inverted chain motors (motor down), a short length of wire rope or deck chain added between the MTG-2100 Grid Kit and the hook on the motor allows proper collection of the take-up chain in the chain bag without spilling.

Chain Motors with Wire Rope Elevating Hoists Above MTG-2100 Grid Kit.

Array Assembly Preparation

Use acoustic predictions provided by Meyer Sound’s MAPP System Design and Prediction software to determine the optimum array position, number of 2100-LFC loudspeakers required, and the Grid Kit height and angle.

From the MAPP design, document the following array information:

• Trim height

• Direction cabinet faces (forward/rearward) for gradient arrays

• Total array weight

• Drive line assignments, Galileo GALAXY output channels

Note

In some regions, regulations require dead-hanging all suspended loads, bypassing the loading of all movable hoists. A dead hang uses a wire rope or chain to carry the suspended load, removing the entire load from the hoisting mech- anism(s) used to raise and lower the array. Ensure the proper rigging equipment is available when needed.

Structural Attachment Point Locations

Install and locate the rigging points above the intended location of the array. The spacing between the rigging attachment points of the MTG-2100 is 24 in (61 cm), along the center line of the grid.

MTG-2100 Grid Rigging Attachment Points

Array Assembly Steps

Because the 2100-LFC cabinets are horizontally symmetrical, when the steps below give instructions related to one side of a cabinet, always duplicate the action on the other side of the cabinet. The duplicate instruction for the other side of the cabinet is not included

These instructions assume the 2100-LFC cabinets are already stacked on caster frames, ready for temporary installation, e. g., touring or one-off events, and that the MTG-2100 Grid is not already connected to the top 2100-LFC cabinet. For installations, it is likely that individual cabinets will be located on the working surfaces below the rigging points and added one at a time to the array. If there are questions, please contact Technical Support by visiting meyersound.com/ contact.

1. Ready the hoisting mechanism(s).

   Caution

   Discover and follow all safety regulations and operational rules regarding movement of suspended loads for the region, location, and venue where the system will be deployed.

2. Securely mount any accessories to the MTG-2100 Grid Kit, e. g., lasers, inclinometers, tape measure, etc.

3. Prepare 2100-LFC cabinets.

   Remove protective covers from stacks of 2100-LFC cabinets and arrange the stacks in the order they will be added to the array.

   Note

   Leave the GuideALinks of the top cabinet of each stack retracted.

4. Connect the MTG-2100 Grid to hoist(s).

   • Locate the MTG-2100 Grid on the floor or a cable trunk directly below the hoist(s).

   • Connect 3/4-inch or 7/8-inch shackles to the grid.

   • Connect the hoist(s) to the shackles.

5. Connect the MTG-2100 to the first stack of 2100-LFC cabinets (Figure 30).

   • Raise the MTG-2100 Grid until it is higher than the 2100-LFC cabinets being connected.

   • Move the first stack of 2100-LFC cabinets under the grid.

   • Lower the MTG-2100 Grid until it is 1 to 2 inches (2.5 cm to 5cm) above the top 2100-LFC cabinet, close enough to allow the front GuideALinks to extend into the GuideALink sockets of the grid.

   • Remove the quick-release pins that are attached to the MTG-2100 Grid and let them hang from their lanyards.

   • For the top 2100-LFC, remove the quick-release pin of the front GuideALink, raise the GuideALink with the GuideALink lever, then re-insert the previously removed quick-release pin. Repeat for the rear GuideALink.

     – The GuideALinks should extend into the GuideALink sockets of the grid, but won’t be entirely seated.

   • Lower the grid until it rests on the extended GuideALinks.

   • Insert the four 7/16 x 1.50-inch QRP (red button, PN 134.051) quick-release pins attached to the grid to secure the GuideALinks of the cabinet to the grid.

     Caution

     Make sure the quick-release pins are fully inserted and locked, unable to be removed without depressing the button of the quick-release pin

     

     2100-LFC GuideALinks Extended

6. Connect the strain relief (cable pick) for the cable going to the ground to a pear ring and/or shackle and attach it the rear hoist. If a single hoist is used, consider attaching the strain relief around the central structural member of the grid.

7. Connect the power and signal cables to the cabinets ready to be hoisted.

8. Visually inspect the assembly before hoisting, make sure:

   • The rigging hardware is properly oriented and won’t “jam” or “foul,” especially the shackles

   • Cables are properly routed and will not be strained, pinched, or damaged when the array is raised.

   • Each cabinet is linked to the cabinet above it, verifying that each of the four GuideALinks of each cabinet are extended and pinned in place with 7/16 x 0.90-inch QRP (black button, PN 134.065) quick-release pins attached by lanyard to each cabinet

9. Remove the MCF-2100 Caster Frame

   Caution

   Do not lift the caster frame by the handles while it is being removed or attached to a cabinet. This creates a pinch point for hands. Only lift the caster frames by the handles when the caster frame is not connected to a cabinet.

   

   Caster Frame Handle Pinch Point

   • First, remove both front pins that secure the caster frame while supporting the underside of the caster frame by hand

   • Lower the front wheels to the floor.

   • Next, remove both rear pins that secure the caster frame while supporting the underside of the caster frame by hand.

   • Lower the rear wheels of the caster frame to the floor.

   • Unless it is the last stack to be flown, leave the quick-release pins dangling from their lanyards.

10. Prepare to connect another stack of loudspeakers.

    • Ensure the connected cabling has enough slack to not be strained, pinched or damaged as the array is raised.

    • Raise the array, loading the hoists equally, until the cabinets are about 6 inches (15 cm) higher than the next stack of cabinets to be attached.

    • Move the stacked cabinets under the suspended cabinets, aligning the corners.

    • Make sure the GuideALinks of the top stacked cabinet are retracted.

      Caution

      Do not attempt to “land” the suspended cabinets on a stacked cabinet with the GuideALinks extended. Collision of the GuideALinks and the GuideALink sockets will cause excessive wear over time. Collision of an extended GuideALink and the wooden bottom of a cabinet above it can puncture or damage the cabinet.

    • Lower the suspended cabinets within 1 to 2 inches (2.5 to 5 cm) above the top of the cabinet to be connected.

11. Connect the next stack of loudspeakers.

    • For the cabinet to be connected, remove the quickrelease pins and extend the front and rear GuideALinks into the link sockets of the suspended cabinet. Reinsert the quick-release pins in the same holes to secure the GuideALinks in the raised position with the 7/16 x 0.90-inch QRP (black button, PN 134.065) attached by lanyards to the cabinet.

    • Lower the suspended cabinets until their weight is supported by the stacked cabinets.

      – The raised GuideALinks keep the flown cabinets aligned to the stacked cabinets.

    • Secure the front and rear GuideALinks to the suspended cabinets by reinserting the 7/16 x 0.90-inch QRP (black button, PN 134.065) quick-release pins attached to the bottom, suspended cabinet.

    Caution

    Make sure the quick-release pins are fully inserted and locked, unable to be removed without depressing the button of the quick-release pin.

    

    GuideALinks Extended and Secured to the Cabinet Above with Quick-Release Pins

    Note

    The lanyards of the quick-release pins may be damaged if quick-release pins are inserted in an adjacent cabinet.

12. Trim the array in its final position

    Caution

    Do not tip the array forward or backward while raising the array. All motors should carry the same amount of weight.

Disassembling Arrays

Array Disassembly Preparation

• De-energize the electrical system providing power to the loudspeakers.

• Disconnect cabling connected to equipment on the ground.

• Disconnect any rigging hardware used to secure the horizontal aim of the array.

• If the array is dead hung (required in some regions), raise the hoists so they take weight and remove the rigging hardware associated with the dead hang.

Array Disassembly Steps

Because the 2100-LFC cabinets are horizontally symmetrical, when the steps below give instructions related to one side

of a cabinet, always duplicate the action on the other side of the cabinet. The duplicate instruction for the other side of the cabinet is not included.

Before lowering the array, make sure the attached cabling has enough slack and that the area around and under the array is clear of obstructions.

Caution

Discover and follow all safety regulations and operational rules regarding movement of suspended loads for the region, location, and venue where the system will be deployed.

1. Equalize the motor load (grid angle zero degrees), then lower the array until the bottom cabinet is 1 to 2 inches (2.5 to 5 cm) above the height of the caster frame GuideALink tabs, and move a caster frame under the cabinets.

2. Connect the caster frame to the bottom of the array.

   Caution

   Do not lift the caster frame by the handles while it is removed or attached to a cabinet - a hand pinch point is created. Only lift the caster frames by the handles when the caster frame is not connected to a cabinet.

   

   Caster Frame Handle Pinch Point

   Caution

   Do not attempt to “land” the MTG-2100 Grid on a caster frame. Collision of the caster frame tabs and the GuideALink sockets will cause excessive wear over time.

   • Remove all four quick-release pins from the bottom GuideALink sockets of the bottom cabinet.

   • From the underside of the caster frame, lift the front or rear, seating the GuideALink tabs of the caster frame in the rear GuideALink sockets of the cabinet.

   • Insert the previously removed quick-release pins to secure the caster frame.

   • Lift the other end of the caster frame, and secure with the previously removed quick-release pins.

3. Lower the array until the caster frame wheels contact the working surface.

4. For the cabinets to be removed, disconnect all cabling and release any strain reliefs.

5. For the bottom cabinet to remain suspended, remove the lower, front, and rear quick-release pins.

   Note

   Small adjustments of the hoists may be necessary to relieve tension or compression of the GuideALinks and quick-release pins.

6. For the top cabinet to be removed, remove the upper, front, and rear quick-release pins - GuideALinks will retract

7. Reinsert the previously removed quick-release pins.

8. Prepare the stack to be transported.

   Caution

   • When 2100-LFC cabinets are stacked on caster frames, the front and rear GuideALinks of each cabinet should be extended and secured in place with quick-release pins connecting each cabinet of the stack.

   • Do not transport the cabinets with the GuideALinks of the top cabinet extended to prevent damage while transporting.

• Move the disconnected cabinets away from the work area to a safe location.

• Open the flap of the 2 or 3-high cover and slide over the top of the stacked cabinets.

Repeat steps 1-8 for additional stacks of cabinets.

Transporting MTG-2100 on Cabinets

When transporting an MTG-2100 Grid on a stack of one or two cabinets, use the front and rear GuideALinks to secure the grid to the top cabinet. This is the same configuration of the GuideALinks as when the array is suspended.

GuideALinks Extended and Secured with Quick-Release Pins

Caution

Do not transport 3-high stacks of 2100-LFC with the MTG-2100 Grid on top. This exceeds the safety limits for tip-over, which may cause injury.