Meyer Sound M3D-SUB User Manual

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QUICKFLY RIGGING MANUAL

M3D™ and M3D-Sub

M SERIES

DECLARATION OF CONFORMITY ACCORDING TO ISO/IEC GUIDE 22 AND EN 45014

The manufacturer: Meyer Sound Laboratories Inc. 2832 San Pablo Avenue Berkeley, California 94702-2204, USA

Declares that the products: M3D™ and M3D-Sub conform to the following product specications:

Safety: EN60065: 1998 IEC60065: 1998 EMC: EN55103-1: 1997 emission(1) EN55103-2: 1997 immunity(2)

This device complies with the requirements of the Low Voltage Directive 73 / 23 / EEC and the EMC Directive 89 /336 / EEC.

This device also complies with EN 55103-1 & -2. Operation is subject to the following two conditions:

(1) this device may not cause harmful interference, and (2) this device must accept any interference received, including

interference that may cause undesired operation.

Environmental specications for Meyer Sound electronics products:

Operating Temperature: 0˚C to + 45˚C Nonoperating Temperature: <-40˚C or > +75˚C Humidity: to 95% at 35˚C Operating Altitude: to 4600 m (15,000 ft) Nonoperating Altitude: to 6300 m (25,000 ft) Shock: 30g 11 msec half-sine on

each of 6 sides

Vibration: 10 Hz to 55 Hz (0.010 m

peak-to-peak excursion)

Ofce of Quality Manager Berkeley, California USA July 19, 2002

M3D and M3D-Sub QuickFly® Rigging Manual

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.

Except as permitted by applicable copyright law, no part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, recording or otherwise, without prior written permission from Meyer Sound.

M3D, TruPower, RMS, BroadbandQ, MAPP Online and REM are trademarks of Meyer Sound. Meyer Sound, SIM and QuickFly are registered trademarks of Meyer Sound (Reg. U.S. Pat. & Tm. Off.). All third-party trademarks mentioned herein are the property of their respective trademark holders.

Printed in the U.S.A.

Part Number: 05.105.400.01, Rev. B

SYMBOLS USED

These symbols indicate important safety or operating features in this booklet and on the chassis.

Dangerous voltages: risk of

electric shock

Pour indiquer les risques

résultant de tensions

dangereuses

Zu die gefahren von

gefährliche spanning zeigen

Para indicar voltajes

peligrosos.

Important operating

instructions

Pour indequer important

instructions

Zu wichtige betriebs-

anweisung und unter-

haltsanweisung zeigen

Instrucciones importantes

de funcionamiento y/o

manteniento

IMPORTANT SAFETY INSTRUCTIONS

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this loudspeaker near water.

6. Clean only with dry cloth.

7. Do not block any ventilation openings. Install in accordance with Meyer Sound's installation instructions.

8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus that produce heat.

9. Do not defeat the safety purpose of the groundingtype plug. A grounding-type plug has two blades and a third grounding prong. The third prong is provided for your safety. If the provided plug does not t into your outlet, consult an electrician for replacement of the obsolete outlet.

10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the loudspeaker. The AC mains plug or appliance coupler shall remain readily accessible for operation.

Frame or chassis Protective earth ground

Masse, châssis Terre de protection

Rahmen oder chassis Die schutzerde

Armadura o chassis Tierra proteccionista

11. Only use attachments/accessories specied by Meyer Sound.

12. Use only with the caster rails or rigging specied by Meyer Sound, or sold with the loudspeaker. Handles are for carrying only.

CAUTION: Rigging should only be done by

experienced professionals.

13. Unplug this loudspeaker during lightning storms or when unused for long periods of time.

14. Refer all servicing to qualied service personnel. Servicing is required when the loudspeaker has been damaged in any way, such as the power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the loudspeaker, the loudspeaker has been exposed to rain or moisture, does not operate normally, or has been dropped.

15. This loudspeaker provides protection against direct sprays of water up to 15° from vertical. Rating IP42 in accordance with IEC 60529.

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SAFETY STATEMENT

PLEASE READ THIS SECTION CAREFULLY AND IN ITS ENTIRETY. IT CONTAINS CRITICAL INFORMATION REGARDING SAFETY ISSUES, INCLUDING GUIDELINES FOR GENERAL SAFE USE OF RIGGING SYSTEMS AS WELL AS ADVISORIES ON GOVERNMENT REGULATIONS AND LIABILITY LAWS. MEYER SOUND CANNOT BE HELD RESPONSIBLE FOR CONSEQUENCES THAT MAY ENSUE DUE TO FAILURE TO READ AND COMPLY WITH INFORMATION IN THIS SECTION.

SCOPE OF THIS MANUAL

Although this manual contains much useful information on rigging in general, it does not claim to be a comprehensive resource on the subject. This manual assumes that the owners and/or users of a QuickFly system are knowledgeable and experienced in the areas of rigging and ying 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. THIS MANUAL DOES NOT ADDRESS THE SPECIFICS OF ANY SUCH APPLICABLE LAWS AND GOVERNMENT REGULATIONS. THIS MANUAL DETAILS PROCEDURES AND PRACTICES CONSISTENT WITH THOSE GENERALLY ACKNOWLEDGED AS ALLOWABLE AND SAFE IN THE UNITED STATES. HOWEVER, 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.

All load ratings and other specications given in this manual are the result of accepted engineering practice and careful testing. However, such specications and ratings are subject to change. USERS ARE ADVISED TO CHECK THE QUICKFLY SECTION OF THE MEYER SOUND WEBSITE AT

http://www.meyersound.com

OR CONTACT TECHNICAL SUPPORT AT REGULAR INTERVALS TO CHECK FOR UPDATED OR REVISED INFORMATION.

REGULATORY COMPLIANCE

The engineering practices and safe working load (SWL) ratings of the QuickFly system are in full compliance with all known regulatory statutes currently applicable in the United States. Unless otherwise specied, all working loads are based on a 7:1 safety factor. 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 ofcials in one location may have a stricter interpretation than another local ofcial, even when operating under the same regulations and in the same legal jurisdiction.

CONSEQUENTLY, USERS OF QUICKFLY RIGGING SYSTEMS SHOULD BE PREPARED TO TAKE ADDITIONAL SAFETY ASSURANCE MEASURES BEYOND THOSE OUTLINED IN THIS MANUAL. IN ALL CASES, IT IS THE RESPONSIBILITY OF THE USER TO MAKE CERTAIN THAT ANY MEYER SOUND LOUDSPEAKER SYSTEM IS SUSPENDED IN ACCORDANCE WITH ALL APPLICABLE NATIONAL/FEDERAL, STATE/PROVINCIAL, AND LOCAL REGULATIONS.

LOAD RATINGS AND SPECIFICATIONS

Long-term safe operation is a central concern in the design and manufacture of any rigging/ying system. Meyer Sound has taken great care in material selection and component design. In all critical cases, load points are redundant, with a safety margin that allows one or more load points to fail while maintaining system integrity. After manufacture, all load-critical system components are individually inspected.

Advisory Note: Safety Responsibilities “Above the Hook”

In most touring applications of rigging systems, the touring sound 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 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 are advised to double-check to make certain that attachment points are approved and suitably load rated, and that the points used are those identied as such by the venue owner or operator. AS AN EXTRA PRECAUTION, CAREFUL INSPECTION OF THE ATTACHMENT POINTS IS ADVISED BEFORE FLYING, 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 SWL 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.

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. At this time, each component should be carefully inspected under ideal lighting conditions, and then the entire system should be own as used for a nal comprehensive check.

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

REPLACEMENT PARTS

Any component found to be defective, or any safetyrelated component you even suspect might be defective, should be replaced with the equivalent, approved part. Parts specic 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.

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 impervious to rust and resistant to most corrosive uids. Nevertheless, normal use and shipping vibrations can wear through the protective coatings, and extremely corrosive uids (such as battery acid) can cause severe damage with prolonged exposure even to protected parts. Particular attention should be given to screws, bolts, and other fasteners to make certain the ttings 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.

TRAINING

Considering their sophistication and exibility, QuickFly systems are relatively straightforward and easy to use. Nevertheless, key points of assembly, rigging, and ying that must be fully mastered before a system is own. Users should read this manual in its entirety before attempting to deploy any QuickFly system. You may make additional copies of this manual as necessary for in-house use; copies may not be made for any other purpose.

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viii

CONTENTS

Introduction 1

Assembling Blocks for Transport 1

Truck Pack 1 M3D Transport 3

Before Hanging an M3D Array 3

Choosing Rigging Point Capacities 3 M3D Placement Calculator 4 Measuring a Venue 5

General Hanging Considerations 6

Do’s and Don’ts 6 Lifting Mechanisms 7 Use Front and Back Motors Whenever Possible 7 Choosing Pickup Points 8

Array Assembly and Angle Adjustment 9

Starting Array Assembly 9

Stacking an M3D Array 10

Attaching Motors to the MTG-3D Top Grid 10 Attaching M3Ds to the MTG-3D Top Grid 11

Adjusting Angles 12

MTG-3D Top Grid to First M3D Angle Adjustment 12

Adjusting Top M3D Top Grid Downtilt 12

Adjusting MTG-3D Top Grid Uptilt 13 Adjusting Splay Angle in an Array 14 Removing Caster Rails 15 Adding a Block of M3Ds to an Array 16

Flying a Completed Array 18

Including M3D-Subs in an Array 19

Striking the Array 19

Appendix A — Congurations and Load Ratings 20

General 20 About These Load Ratings 20 Measured Angles 20

Angle Between Bridle and Grid 20

Maximum Top Grid Angle 20

Bridle Leg Lengths 20 Conguration A 21 Conguration B 23 Conguration C 25 Conguration D 27 Conguration E 29 Conguration F 30 Conguration G 31

Appendix B — Physical Specications 32

M3D Physical Specications 32 M3D-Sub Physical Specications 33 MTG-3D Top Grid Physical Specications 33

Appendix C — MTF-3D Transition Frame Assembly Procedure 35

MTF-3D Transition Frame 35 Attaching Loudspeakers to Transition Frame 35 Attaching the Adjustable Link Assembly to the MRF-3D Rigging Frames 36

Rear 36 Front 37

Glossary 38

M3D AND M3D-SUB QUICKFLY RIGGING MANUAL

INTRODUCTION

The M3D and M3D-Sub QuickFly rigging system is a complete integrated solution for transporting and ying M3D and M3D-Sub loudspeakers. This system includes everything below the motors, to the caster rails and covers that carry and protect the system in transport. All the hardware for rigging the system remains captive to the loudspeakers and MTG-3D Top Grid. This manual is a guide to transporting, assembling, adjusting, and striking a vertical array of M3D and M3D-Subs. Also included is information on the Meyer Sound M3D Placement Calculator, a tool that provides the necessary mechanical setup information for prerigging and hanging an M3D and M3D-Sub system. For information on the operation of the M3D and M3D-Sub, please refer to the M3D Operating Instructions, part number 05.105.022.01.

Throughout this document, we refer to the M3D loudspeaker. To save space and avoid unnecessary repetition, please note that in all cases — unless otherwise indicated — “M3D” includes M3D and M3D-Sub. For example, when we state “The rst step in preparing M3Ds for transportation…” What is implied is, “The rst step in preparing M3Ds and M3D-Subs for transportation…”

Truck Pack

M3Ds can be transported in blocks from one to four M3Ds high, whichever conguration maximizes loading in the truck and meets your needs (see Figure 1). These M3D blocks can be packed three wide in a trailer. Blocks of one or two M3Ds are lighter to move when on site, but may not make as efcient use of truck cargo space.

Figure 1. M3Ds packed in truck for transport

ASSEMBLING BLOCKS FOR TRANSPORT

The rst step in preparing M3Ds for transportation is to assemble the loudspeakers in modular blocks for easy assembly. The number of M3Ds in a block will be determined by the safest and most practical size for your truck pack and load-in considerations.

The procedure in the section “Array Assembly and Angle Adjustment,” may be considered suitable for assembling the blocks for transport.

CAUTION: Take care if you use a forklift for

making or moving M3D blocks. There is no protective metal frame at the bottom of an M3D while it is on its caster rails, and the forklift may damage the wooden cabinet. Using protective padding or material over the forks is recommended.

CAUTION: Because of weight and stability

considerations, we recommend that transport blocks not exceed four M3Ds high.

Using a three- or four-high M3D block will make each block heavier (see Table 1) and less stable, so the blocks will require extra care when rolling over an uneven surface and up truck ramps. Conversely, larger blocks will make

The optional M3D transit covers, shown in Figure 2, are constructed of wear-resistant nylon fabric with Velcro closures to protect the M3D and loudspeakers from scuffs

and weather during transport. more efcient use of a truck’s cargo space and make a more efcient load-in and strike.

Figure 2. M3D transit covers shown covering one-, two-, and four-high M3D blocks

Table 1: M3D Transport Blocks

Number

of M3Ds

M3D Block

Weight

Block Height

Mounted on

Transit Cover

Part Number

Caster Rail

1 415 lbs

188.24 kg

2 830 lbs

376.48 kg

3 1245 lbs

564.72 kg

4 1660 lbs

752.96 kg

28.56"

7254 mm

49.31"

12525 mm

70.06"

17795 mm

90.81"

23066 mm

66.105.036.01

66.105.037.01

66.105.040.01

66.105.038.01

Table 1 notes:

1. The table above refers to M3Ds only. If transport blocks include M3Ds and M3D-Subs or M3D-Subs only, recalculate the block weights by replacing the gure of 415 lbs (188.24 kg) with 395 lbs (179.17 kg).

2. An attached MTG-3D Top Grid will add approximately

11.0 inches (279.4 mm) to the height of the block and approximately 308 lbs (139.71 kg) to the total weight of the block.

Table 2. M3D Rigging and Replacement Parts

Item Description Part Number

MTG-3D Top grid for M3D arrays 45.105.028.01

MTF-3D Transition frame from

40.105.092.01 M3D arrays to CQ-2 and MSL-4 downlls

MRF-3D M3D & M3D-Sub Left

40.105.103.01 Side Rigging Frame Replacement Kit

MRF-3D M3D & M3D-Sub Right

40.105.103.02 Side Rigging Frame Replacement Kit

M3D & M3D-Sub Front

40.105.104.01 Cam-Link Replacement

M3D & M3D-Sub Rear

40.105.104.02 Link Replacement

M3D Rigging Spacer

68.105.072.01 Tool

Caster Rail Kit 40.105.033.01

QRP M3D Quick Release Pin 134.007

3. The measurements are at 0˚ splay angles.

4. These measurements include the cover thickness.

5. The block height measurements include 7.81 inches (198.4 mm) added to the block height by the caster rails.

TIP: Meyer Sound’s optional transit covers

will protect M3Ds stacked for transport. They are easy to use, because one side opens with Velcro seams, allowing two stagehands to easily put on the cover without having to lift it over the top of the block.

We suggest you strap each block, once loaded, with a cargo strap to prevent rubbing through the covers and damaging the M3D cabinets or adjacent equipment.

M3D Transport

As a reference, a three-high M3D block weighs approximately 1245 pounds (564.72 kg), or about the weight of a large-format mixing console, including its case, a piano, or a set-cart.

TIP: Attaching the MTG-3D Top Grid to

the uppermost block of the array while transporting an M3D system can minimize labor and setup time. Use a wraparound, open-top cover to protect the four sides of the cabinets.

If you transport the block with the MTG-3D Top Grid attached, it should be in the middle of the outer two blocks to allow the MTG-3D Top Grid to slide over the other two blocks. This will also keep the MTG-3D Top Grid away from the wall of the truck. If the block with the MTG-3D Top Grid is placed against the truck wall, it must be loaded with the extension side of the MTG-3D Top Grid facing the inside (as opposed to the wall) of the truck. If it is oriented toward the wall, the extra space taken will prevent the third block from tting beside the other two.

Figure 3. Block of four M3Ds on caster rails with transit cover removed

BEFORE HANGING AN M3D ARRAY

Consider the following before you start hanging an M3D array:

CAUTION: We strongly recommend that you

use a professional rigger when hanging any system.

Alternatively, the cabinets may be transported in a twohigh module. A stacking row of other equipment may be lifted on top while in the truck. The approximately 830pound (376.48 kg) weight for the two-high module will be easier to manage in some types of venues.

NOTE: Because fewer M3Ds travel in each

block, more stage space, rigging, and assembly time will be necessary.

CHOOSING RIGGING POINT CAPACITIES

The MTG-3D Top Grid is designed to allow the suspension of all approved vertical M3D array congurations. For a list of approved array congurations and their specications, refer to “Appendix A — Congurations and Load Ratings.”

The total allowable tilt of the MTG-3D Top Grid with an array hung under it is ±25˚. The MTG-3D Top Grid allows 10˚ of vertical angle adjustment between the MTG-3D Top Grid and the rst cabinet, from 0˚ to ±5˚ in one degree increments. Refer to the section “MTG-3D Top Grid to First M3D Angle Adjustment” for details.

When choosing your rigging point capacities, always keep in mind that the entire weight of the array may shift completely to either the front or back points. Three factors contribute to variations in the center of gravity:

the venue, as shown in Figure 4, can display up to three balconies. The Meyer Sound M3D Placement Calculator is approved by a certied structural engineering rm.

1. The curvature of the array

2. The tilt of the entire array inclusive of the MTG-3D Top Grid

3. The number and types of M3D elements and downlls used

M3D PLACEMENT CALCULATOR

The M3D Placement Calculator, shown in Figure 4, is a mechanical design tool for calculating structural information about an M3D and/or M3D-Sub array. It is implemented as an Excel spreadsheet and provides information regarding rigging loads and array placement and aiming. A customizable graphic representation of

NOTE: You need a computer loaded with

Microsoft Excel in order to run the M3D Placement Calculator.

The calculator is available online by lling out an application form on the Meyer Sound web site at:

http://www.meyersound.com/forms/m3dcalcform.htm

The download location and password will be emailed to you at the email address you enter on your application.

Figure 4. M3D Placement Calculator and link to detailed user instructions

MEASURING A VENUE

You are required to enter the venue’s dimensions into the M3D Placement Calculator.

If scaled sectional drawings of the venue are available, you can use the dimensions from these drawings to determine the M3D array setup.

If scaled sectional drawings of the venue are not available, you can measure the venue by using a laser range nder, or alternatively, a long measuring tape.

Another less accurate option is to measure the venue by pacing it off, using a pedometer similar to item 3 in Figure 5, and using this measurement to make an educated estimate.

Figure 5 shows some tools that can aid in the process of aligning an array and focusing it to the requirements of a specic venue:

1. Binoculars

2. Laser measuring tool

3. Pedometer

4. Laser inclinometer

5. Self-leveling, four-way laser

Figure 5. Useful array alignment tools

Once you enter measurements into the M3D Placement Calculator, it will help you visualize the approximate vertical splay angles needed. The calculator will also help with other rigging considerations. Save the results of these calculations for use when you assemble the M3D array as described in the section “Array Assembly and Angle Adjustment.”

A laser measuring tool, similar to item 2 in Figure 5, may also be used to measure the height of venue rigging beams and the trim height of the array.

TIP: When making measurements and

adjustments to an array, it is much more convenient to use a laser measuring tool than a measuring tape.

The M3D Placement Calculator is not an acoustical design tool and cannot be used to predict array coverage. To facilitate accurate coverage predictions, however, the calculator provides detailed positional data that can be entered into Meyer Sound’s MAPP Online™ acoustical prediction program. In combination, these two Meyer Sound tools give you the ability to predict sound coverage and to calculate the physical placement of arrays to accomplish the prediction.

GENERAL HANGING CONSIDERATIONS

Before starting the actual array assembly and hanging process, review this section:

DO’S AND DON’TS

DO: Use only properly trained personnel to assemble and hang M3D arrays.

DO: Pay attention at all times when moving the array with a motor system. It is often difcult to see the physical orientation when you are very close to the array. Have a spotter, as shown in Figure 6, provide “a second set of eyes” at a position different from the motor operator.

The weight distribution elds shown in the M3D Placement Calculator are calculated for the array in its nal trim position. During array assembly, it may be necessary for the front or rear motors to temporarily support the entire weight of the array. Therefore, when planning the rigging point loads, you must always plan on this fact regardless of the results shown in the "Weight on Front/Rear Motor" elds.

NOTE: The Instructions link at the top of the

M3D Placement Calculator page provides complete instructions for using the M3D Placement Calculator.

Figure 6: Using a spotter as a “second set of eyes”

DON’T: Place hands between the cabinets.

DON’T: Use the rear cabinet ring/stud ttings for rigging cabinets or pull back. Use them for system cable support only. (Refer to the M3D Operating Instructions for cabling details.)

DON’T: Allow the center of gravity to move outside of the MTG-3D Top Grid once it is in its nal trimmed position.

The M3D's rigging system is designed to be rigid, which allows for tilting up or down while maintaining the set relative splay between cabinets and alleviating the need for any pull back to be used.

LIFTING MECHANISMS

The number and lift capacity of chain motors used to lift the array are dependent on the array’s combined weight, including the weight of any underhung clusters, and its orientation and splay. For a smaller array, it may be sufcient to use 1-ton motors, but for larger arrays, 2-ton motors may be necessary.

The lift capacity of any single motor or set (in a fourhoist conguration) of motors must be sized to support the entire weight of the array, including cable. When you are assembling the array, as the cabinets are attached, level the bottom cabinet to allow the next waiting block to be attached. Because there is often a vertical curve in the array, the upper cabinets have an increasing uptilt. At some point, depending on the vertical splay angles used, the rear motor(s) may not be supporting any weight. At this point, the front motor(s) must support the entire weight of the array while it is being assembled.

Conversely, once the array is assembled and own into its nal position, it is likely that the MTG-3D Top Grid will be much closer to level. In this conguration, the majority of the weight then shifts to the rear motor(s). If the array has downtilt and a curve is being used, the weight may then shift closer to the rear motor(s).

Furthermore, when you are using three or four motors and lifting the array during assembly, the array may not be level in the other plane (onstage vs. offstage). Further weight will shift onto the highest motor, requiring that motor to have a larger capacity.

The MTG-3D Top Grid is designed to have the motors attached to its pickup points at either the center set of the MTG-3D Top Grid’s main frame, the four corner sets on the main frame, or the front and rear sets of tabs on the extension frame in its retracted or extended position.

USE FRONT AND BACK MOTORS WHENEVER POSSIBLE

Front-to-back bridle point congurations, illustrated in Figure 7 and congurations A, E, and F in “Appendix A — Congurations and Load Ratings,” allow the use of motors to provide the necessary vertical tilt to the array. This provides the easiest conguration to use for trimming vertical tilt for an array.

Figure 7. Bridles may be used in a front-to-back hanging conguration

If front and back motors cannot be used to provide the required vertical tilt of an array, such as congurations B, C, and D in “Appendix A — Congurations and Load Ratings,” the technician can use the variable tilt capability of the MTG-3D Top Grid, to achieve the desired vertical tilt angle for the array. Refer to the section “MTG-3D Top Grid to First M3D Angle Adjustment.”

Refer to the rigging congurations and their associated tables in “Appendix A — Congurations and Load Ratings” for details on allowable weights, pickup points, bridle lengths, and the maximum allowable number of loudspeakers for the conguration you will be rigging.

NOTE: When using chains or making custom

bridle lengths to achieve vertical tilt, be sure the center of gravity of the nal hung array is within the allowable limits of the MTG-3D Top Grid. (See “M3D Placement Calculator.”).

TIP: Some venues, such as theaters, have

only side-to-side motor points available through the ceiling plaster. In this case, you can rig two front/rear motors through the same ceiling hole, but attach them separately to the venue’s structural steel beams, provided that the single point is sufciently rated for the entire weight of the array. The two steel cable sets must be held together with a loose shackle slightly below the plaster ceiling to prevent damage to the ceiling as the chain or steel pulls sideways when the array is raised to its desired position.

3. The array may develop as much as 3 feet of downstage (front) curve (see Figure 8) while being assembled. Often, the array will be assembled near the downstage edge or a similar situation. Calculate the depth of the system to ensure that the lower M3Ds will be able to be attached to the bottom of the array as it moves downstage during assembly.

CHOOSING PICKUP POINTS

When choosing rigging points, refer to “Appendix A — Congurations and Load Ratings,” for various hanging congurations, maximum weights, bridle lengths, and array limits for 5:1 and 7:1 safety factors. Use these values as applicable rigging for the venue.

It is also important to keep in mind the following considerations:

1. The most exible hanging conguration is one similar to that shown in the section “Conguration F” in Appendix A to hang the array directly from a venue’s structural beam without using bridles. Fewer bridles will improve the efciency of rigging, adjusting vertical trim and adjusting horizontal orientation.

Figure 8. M3D array 12-deep side view during assembly and in own position

4. The array may develop as much as 7 feet of upstage (rear) curve (see Figure 8) when own into position. If there is a wall or upstage structure, calculate the depth of the system to ensure that it can be own into its intended position after assembly and vertical trim is applied. The M3D Placement Calculator will provide the total array depth.

TIP: If the bottom of the array ends up being

Structural Steel Rigging Point

6" to 12" Outside of Rigging Frame

too far downstage during assembly, have stagehands breast it upstage until assembly is complete and it is own to its nal trim position.

5. It is often necessary to increase the stability of an array in venues with very high structural steel from which the array is suspended. The rigging points can be located a small distance, that is, 6 inches (152.4 mm) diagonally, from the MTG-3D Top Grid dimensions for a four-motor conguration. For a twomotor conguration, the rigging points can be located a small distance outside of the MTG-3D Top Grid’s depth, as shown in Figure 9.

In the congurations shown in Figure 9, the motors will be outside of the actual MTG-3D Top Grid dimensions. The technician will need to pull the motors in to attach them to the MTG-3D Top Grid. When the array is own into position, it will nd its own center of gravity between the motors. In windy conditions, this will also reduce swaying. This method minimizes any chance of a cable pic turning the array. If three or four motors are used and the array is slightly off its ideal horizontal angle, individual motors can then be used to turn the array once it is close to its nal trimmed position.

ARRAY ASSEMBLY AND ANGLE ADJUSTMENT

You will need the following items for assembling the array and adjusting the angle:

 Quick release pins (QRPs)

 Cable assembly

 Alignment block (optional)

 Vertical angle conguration

STARTING ARRAY ASSEMBLY

After determining that you have all the necessary equipment and tools, proceed as follows:

1. Choose the appropriate motor points for the rigger to prepare the ground rigging of a hanging conguration, selecting from the options shown in “Appendix A — Congurations and Load Ratings.”

2. Once the points have been rigged, check for accuracy and ensure that the climbing riggers have nished all the points for the array before applying any weight to these points.

3. Apply power to the motors, checking for correct electrical phase (chain movement direction — see Figure 10). Change phase if necessary.

Figure 9. Example of wide rigging

Figure 10. Checking phase (chain direction)

4. Run the chain through the motors until they are approximately 2 feet off the ground.

5. Attach the chain bags and feed the unused chain into the bag.

6. If using 2-ton motors, check for any twists in the overhead chain and correct if necessary (see Figure

11).

STACKING AN M3D ARRAY

ATTACHING MOTORS TO THE MTG-3D TOP GRID

Use rated steel cables and shackles when attaching motors to the MTG-3D Top Grid, as shown in Figure 12. The MTG-3D Top Grid will accommodate 5/8-inch and 3/4-inch shackle sizes on its pickup points.

Figure 11. Rigger checking overhead chain

Figure 12. Attaching motors or bridle legs to the MTG-3D Top Grid

The extension frame on the MTG-3D Top Grid is provided to help keep the center of gravity evenly distributed between the front and back points. This frame can be used in either the retracted or the extended positions, depending on which will provide the most even weight distribution when the array is in its nal trimmed conguration.

The M3D Placement Calculator provides weight information on the front and back loads to help select the correct pickup lotions — back rigging point (BRP) 1, 2, or 3 — prior to the array being rigged. However, during assembly it may be necessary for the front or rear motors to temporarily support the entire weight of the array.

The allowable system center of gravity range must be

within the front rigging point and one of the pickup choices provided, as illustrated in Figure 34 on page 26.

 BRP 1 from the main frame

 BRP 2 from the extension frame retracted

 BRP 3 from the extension frame extended

CAUTION: An array in which the center of

gravity falls outside the allowable range of the MTG-3D Top Grid, once it is in its nal trimmed position, is unstable and therefore unacceptable!

Refer to “Appendix A — Congurations and Load Ratings” for allowable weights, bridle lengths, and number of M3D loudspeakers.

CAUTION: Always use properly rated rigging

shackles, chain, and hardware to attach the motors to the MTG-3D Top Grid. Be sure that the motors, hardware, and rigging points are sized appropriately for the entire weight of the array. The M3D Placement Calculator can help in determining the load of the system you are planning to hang.

1. Once the motors are attached to the MTG-3D Top Grid, raise the MTG-3D Top Grid, as shown in Figure 13, to the necessary working height in preparation for attaching the rst block of M3Ds. Adjust the MTG-3D Top Grid to be parallel with the top M3D of the block.

Figure 13. The MTG-3D Top Grid raised for pick up of the rst M3D block

2. Carefully lower the MTG-3D Top Grid, positioning it just over the top M3D in the block, as shown in Figure

14.

ATTACHING M3DS TO THE MTG-3D TOP GRID

Use properly rated hardware to attach the rigging steel and motors to the MTG-3D Top Grid.

CAUTION: Everyone involved in assembling

an array should be coached not to place their hands between the cabinets and the frames.

Figure 14. The MTG-3D Top Grid positioned over the rst M3D block

ADJUSTING ANGLES

0˚ to -5˚

By using both MAPP Online and the M3D Placement Calculator, you should now have determined the required tilt for the MTG-3D Top Grid and splay angles between elements for your array.

The M3D Placement Calculator (see “M3D Placement Calculator”) also provides a warning indication if the center of gravity falls too close to, or outside of, the front or back point that was chosen in the array’s nal conguration.

MTG-3D TOP GRID TO FIRST M3D ANGLE ADJUSTMENT

The MTG-3D Top Grid allows for an adjustment of 0˚ to ±5˚ between the MTG-3D Top Grid and the rst M3D loudspeaker.

If your conguration is front-to-back type A, E, or F as described in “Appendix A — Congurations and Load Ratings,” the entire vertical array of M3D loudspeakers can easily be tilted up or down to help focus the array’s coverage onto a target area by adjusting the front and back motor points.

Figure 15. The MTG-3D Top Grid’s link in retracted position

Adjusting Top M3D Top Grid Downtilt

The total allowable tilt of the MTG-3D Top Grid with an array hung under it is ±25˚, provided that the center of gravity of the array remains inside the MTG-3D Top Grid.

CAUTION: Note that the weight on each

motor shown by the M3D Placement Calculator is the static load when the loudspeaker array is in its nal position and DOES NOT calculate dynamic forces induced during setup. Each set of front and back or side-to-side motors should be sized to withstand the full weight of the loudspeaker array.

If the array must be hung in a side-to-side hanging conguration (conguration B, C, or D in “Appendix A — Congurations and Load Ratings”), you can set the nal rigging tilt angle for the array by using the MTG-3D Top Grid’s rear link adjustment. Using the links of deck chains or using different lengths on the two bridle legs from a motor are effective methods of achieving tilt on a MTG-3D Top Grid.

Figure 15 and Figure 17 illustrate how the MTG-3D Top Grid's CamLinks and rear links can be used for a necessary tilt adjustment of the rst M3D.

With the MTG-3D Top Grid’s rear link in the retracted position (as shown in Figure 15 and Figure 16), the front CamLink can be adjusted to provide between 0˚ and 5˚ of downtilt. The MTG-3D Top Grid’s rear link works in combination with the front CamLink to produce the desired angle of downtilt.

Figure 16. The QRP securing rear link in retracted position

Adjusting MTG-3D Top Grid Uptilt

+1˚ to +5˚

With the MTG-3D Top Grid’s rear link in the extended position (as shown in Figure 17 and Figure 18), the front CamLink can be adjusted to provide between 1˚ and 5˚ of uptilt. The MTG-3D Top Grid’s rear link works in combination with its front CamLink to produce the desired angle of uptilt.

Figure 18 shows the MTG-3D Top Grid with the rear link extended. Note the direction of tilt with this conguration.

Figure 18. MTG-3D with the rear link extended

CAUTION: The MTG-3D Top Grid’s rear link

must ALWAYS be installed when hanging an M3D system. NEVER install a QRP into the MTG-3D Top Grid without using the MTG-3D Top Grid’s 5˚ rear link.

Figure 17. The MTG-3D Top Grid’s link in the extended position

1. Once the loudspeaker’s rear links are pinned into the retracted or extended position as required of the MTG-3D Top Grid’s rear link, unpin the CamLinks from the MTG-3D MTG-3D Top Grid as shown in Figure 19.

TIP: You can mount laser devices, such as

item 4 in Figure 5, on top of the array to determine the top cabinet orientation with respect to actual venue seating. Additionally, you can mount the laser on any cabinet in the array to determine that the system is properly aimed. These devices can be congured to be controlled from the ground.

3. Bump the motors as needed to relieve sheer stress on

the QRPs in order to free them from the holes.

4. Bump the motors to pull the cabinet further upward until the desired CamLink hole is correctly aligned.

CAUTION: Do not hold the CamLink by

placing your ngers between the cabinets.

5. Check the hole alignment by moving the CamLink from the side of the cabinet as it swings through the rigging frames.

Figure 19. Removing the QRP from the MTG-3D Top Grid’s front CamLink

2. Adjust the motors to tilt the MTG-3D Top Grid and allow the CamLink to move until the QRP can be inserted into the required hole.

3. Insert the QRP into the desired CamLink hole as shown in Figure 20.

CAUTION: Always check that all four QRPs

are fully inserted into the MTG-3D Top Grid and loudspeaker’s end frames before lifting an array.

6. A stepped alignment block as shown in Figure 21 is shipped with each MTG-3D Top Grid. Additional alignment blocks are available from Meyer Sound. The alignment block helps set splay angles between cabinets. The stepped block maintains the gap between the cabinet’s front edges, producing a splay angle.

CAUTION: Always check that all four QRPs

are fully inserted into the MTG-3D Top Grid and loudspeaker’s end frames before lifting an array.

7. Place the alignment block between the M3D’s front edge while the CamLink’s QRPs are removed as shown in Figure 21.

Figure 20. QRP inserted at 3˚

ADJUSTING SPLAY ANGLE IN AN ARRAY

1. Once all four QRPs are installed in the top cabinet of the block, bump the motors out to take tension off the cabinets.

2. If splay adjustment is required between M3Ds, remove the QRPs from the CamLinks on either side of the uppermost set of cabinets.

8. While resting the adjustment block’s desired gap distance on the center of the lower cabinet, bump the motors in (down) so that the cabinets are just resting on the block.

9. Swing the CamLink into place, and set the QRP into the frame.

Figure 21. Adjusting angle using the alignment block

Figure 22. Unpinning caster rail

CAUTION: When the QRPs are removed

from the CamLinks, take care when adjusting the motor hoists. If the motors are raised too high with only the rear link’s QRPs installed, the lower loudspeaker block can swing under the upper block of own loudspeakers. Always use small motor bumps when rigging the system while in this state.

REMOVING CASTER RAILS

1. Once the rst block of M3D loudspeakers is lifted into the air, y the assembly to a working height (about waist high) that will allow easy access to and removal of the caster rails from the end frames.

2. Unpin the caster rails as shown in Figure 22 and reinsert one QRP to secure the CamLink. Store the second pin in the rear link hole. Lift the bottom plate of the caster rail by leveling the bottom, relieving the stress on the end frame. Slide them off the end frames as shown in Figure 23.

TIP: For easier management of the caster

rails, stack them in an empty motor case (with lids open if necessary) after removal. They may then be rolled away and returned for strike without carrying each caster rail individually to storage.

Figure 23. Removing caster rail

3. Move the CamLink to the 0˚ position and secure with a QRP as shown in Figure 24.

Figure 24. Front CamLink in up position, QRP inserted

You are now ready to assemble another block of loudspeakers to the array.

4. While the upper array is still oating, visually align the cabinets to be sure the CamLinks will not bind into the mating end frame.

5. Once the rear link is sitting inside the end frame, move the QRP into the end frame’s hole, awaiting alignment with the rear link as shown in Figure 26.

TIP: Use small motor bumps (small

movements up or down) as the alignment gets closer. You may nd that going “down” past the alignment hole and then bumping up gives you ner control.

ADDING A BLOCK OF M3DS TO AN ARRAY

1. Raise the assembled array so that the next block of cabinets can be moved into place. The lowest cabinet of the hung array should be level to the next block. Have the motor operator adjust the front and back hoists as necessary.

2. Fold the rear link out of the top cabinet and hold it in place using a QRP as shown in Figure 25.

Figure 26. Inserting QRP into rear link

6. Attach the two rear QRPs rst, as shown in Figure 27, keeping the front CamLinks tucked away in the frame.

7. If the array isn’t level, left to right, use the motors to adjust the own block of cabinets (if using three- or four-motor hoists).

8. If using only two motors (front and back), pin the rst (or lowest) rear link in, bump the motors in, and then attach the second pin.

Figure 25. Holding the rear link using a QRP

3. Lower the own assembly down onto the waiting block of M3D loudspeakers.

Figure 27. Rear link QRP inserted

TIP: Here is another technique for setting

the rear link. Position the upper array approximately 1 inch (25 mm) above the waiting cabinet block. Push the own array behind the lower block approximately 2 inches (50 mm). Fold out the rear link(s) and rotate them into the end frame of the upper cabinet while swinging the upper array back to its original position..

10. Use up or down motor bumps to pivot (or hinge) the lower block to the upper cabinets, allowing you to set the QRP into the desired CamLink hole as shown in Figure 28 and secure it as shown in Figure 29.

Figure 29. QRP fully inserted into 3˚ hole

9. Once the two rear links are connected, unpin the CamLinks and set the pin to the desired hole in the CamLink as shown in Figure 28.

Figure 28. Inserting QRP at 3˚

Figure 30. 0.25" (6.35 mm) drift punch

NOTE: If cabinets are on uneven ground

or aligned at a slight diagonal, the front and rear CamLink/frame holes may be only partially aligned. Insert a 0.25-inch (6.35 mm) drift punch (see Figure 30) into the frame

hole, and “lever” the CamLink into place by pushing or “wiggling” it in the desired direction. A drift punch is available from a hardware store.

FLYING A COMPLETED ARRAY

Figure 31 shows an example of rigging points chalked on the ground, a fully rigged block of three M3D loudspeakers with an MTG-3D Top Grid mounted, positioned, and ready to y.

Use the following procedure to y rigged blocks and arrays into their nal position.

5. After the M3D array has been own into its nal vertical position, check the horizontal angle of the array. If the array is not parallel to the stage or the array is not aimed in the desired direction, use rigging ropes tied to the lower sides of the array to rotate the array into its nal, correct position.

TIP: You can quickly check the vertical

orientation by looking through the horizontal spaces between the cabinets. It is usually easy to see light through these spaces in an outdoor venue. Often the cabinets are in a darker area than the daylight and, using this method, it is possible to match the two sides and see where they are focused. It is also possible to check other locations in the venue, such as the front-of-house mixer area. Binoculars, item 1 in Figure 5, are also a helpful tool for seeing these gaps from a distance..

Cable tie-down rings at the rear of the M3D cabinet are provided as shown in Figure 32.

Figure 31. Fully rigged M3D block ready to y

1. If the array has front-to-back rigging hoists (conguration type A, E, or F as described in “Appendix A — Congurations and Load Ratings”), raise the rear motors until they are bearing weight along with the front motors.

2. Raise the array to its nal trim height.

3. If the array has front-to-back rigging, adjust the array’s vertical tilt to the desired angle using the front and rear motors as required.

4. If the array has side-to-side rigging, (conguration type B, C, or D as described in “Appendix A — Congurations and Load Ratings”) check that the array angle set in the procedure described in “Adjusting Angles” is correct in the own array and make any nal adjustments as needed.

Figure 32. M3D cable tie-down rings

Cable connectors are protected from wet weather by the rain hood as shown in Figure 32.

CAUTION: Do not use the cable tie-down

rings at the rear of the M3D for pullback or position adjustment of the array.

INCLUDING M3D-SUBS IN AN ARRAY

M3D-Subs can be included in an array in the same manner as M3Ds.

Refer to the M3D Operating Instructions for details on the use of M3D-Subs in an array and suggestions for the optimum conguration with M3D loudspeakers to achieve the desired coverage and sound pressure level (SPL) for a venue while maintaining maximum headroom for all elements of the array.

The M3D-Subs may be stacked up to four high for transport and use. They usually don’t need to be restacked in the truck or in the venue, so they require fewer stagehands. The cable harnesses can be built for modules of three or six, resulting in a very efcient setup and strike.

Figure 33. M3D blocks ready for transport with vertical splay left in

STRIKING THE ARRAY

Taking down an M3D system is basically the reverse of the installation process.

1. Attach the caster rails to the lowest cabinet as the array is being lowered and when the bottom loudspeaker is at about waist height.

2. Level the bottom cabinet to keep it as parallel as possible to the oor.

3. While applying some pull on the QRPs holding the CamLinks that you want to restore to 0˚, lower the array onto the caster rails.

4. Stop the motors once both QRPs are pulled out from the array.

5. Slowly bump the motors down until you can reinsert the QRPs into the 0˚ hole.

6. Repeat this process until the rst block is fully restored to 0˚.

7. Break the block away from the array by pulling all four QRPs, and then bumping the array up to allow the lowest block of cabinets to be wheeled away.

TIP: Note that the MTG-3D Top Grid is

attached to the block at the right in Figure

33. This provides a convenient method of transport, and the top block in the array is ready for assembly at the next venue.

8. Repeat this process until all blocks are removed from the array and the MTG-3D Top Grid is removed from the rigging shackles.

TIP: When touring or using the same array

multiple times, you can leave the set vertical splay angles in the blocks of cabinets while in transport for speedier strike and setup as shown in Figure 33. This also minimizes the adjustments made between cabinets when touring.

APPENDIX A — CONFIGURATIONS AND LOAD RATINGS

GENERAL

This appendix contains various hanging congurations for M3D loudspeakers using an MTG-3D Top Grid. This appendix also contains allowable congurations of bridle attachments, bridle lengths, attachment points on the MTG-3D Top Grid, the maximum weight, and maximum number of M3D loudspeakers for each conguration.

The maximum number of M3Ds that may be hung in each pickup conguration is based on the M3D weight of 415 pounds (188.24 kg). The suspended weight listed in these tables includes loudspeakers, the MTG-3D Top Grid, and all auxiliary equipment supported by the rigging motor. The weight values listed in the tables are the maximum allowable weights and not the actual weight of the array.

CAUTION: The weight of any additional

items, such as ll loudspeakers, hung with the array must be considered when calculating the maximum load.

ABOUT THESE LOAD RATINGS

All the load ratings in this appendix rate the M3D rigging system for the shifts in weight that can occur during installation of an array while maintaining a 5:1 or 7:1 safety factor. When ying an M3D array as discussed in this manual, the entire weight of the array can shift completely to either the front or the back motor or set of motors. We have maintained this rating in all congurations shown in this appendix in order to comply with the majority of regional safety codes for theatrical rigging practices.

Scenarios shown in A, E, F, and G of this appendix assume a “worst case” load between any single motor or pair of motors and steel cable sets. If careful monitoring of the weight distribution is maintained during the lifting and nal trimmed position of an array, the motors and rigging hardware capacities shown in the tables may be adjusted accordingly to maintain a rated working load for your region.

MEASURED ANGLES

Two angles are used in the following tables. The values are shown in two columns: one is labeled “Angle between Bridle and Grid” the other is labeled “Max Top Grid Angle.”

Angle Between Bridle and Grid

This angle (α) is measured between the top of the MTG3D Top Grid and an attached bridle leg. In the following examples, the bridle legs are presumed to be of equal length so the angle formed by each bridle leg and the top grid are equal.

Maximum Top Grid Angle

This angle is used to determine the maximum amount of tilt of the MTG-3D Top Grid from horizontal. The values in this column are the maximum tilt angles allowed.

NOTE: The maximum top grid angle does

not include any array tilt obtained by using the MTG-3D Top Grid’s front and rear links.

Bridle Leg Lengths

The various bridle lengths listed in the following tables are the minimum required to support the corresponding number of M3Ds listed.

CAUTION: Using a bridle leg shorter than

the recommended length may damage the MTG-3D.

CONFIGURATION A

Figure 34 illustrates the hanging congurations that

the attachment points on the MTG-3D Top Grid is 52.50 inches (1334 mm).

are considered in the calculations listed in Table 3 and Table 4. In these congurations, the distance between

Back Rigging Point (BRP) 1 BRP 2 BRP 3

Figure 34. Bridles in front-to-back conguration with the rear extension frame either retracted or extended

Table 3. Suspended Weight and Quantity of M3D Loudspeakers with Varying Bridle Leg Lengths

5:1 Safety Factor 7:1 Safety Factor

Maximum Allowable

Qty. of M3Ds

Maximum Allowable

Suspended Weight

Maximum Allowable

Qty. of

M3Ds

Bridle Leg

Lengths

Angle

Between

Bridle

and Grid

α (deg)

Max

Top

Grid

Angle

Maximum Allowable

Suspended Weight

3.0 ft. (9100 mm) 43˚ ±25˚ 2406 lbs (1091.34 kg) 1 to 5 1718 lbs (779.27 kg) 1 to 3

3.5 ft. (1070 mm) 51˚ ±25˚ 3202 lbs (1452.40 kg) 7 2287 lbs (1037.37 kg) 4

4.0 ft. (1220 mm) 57˚ ±25˚ 3924 lbs (1779.90 kg) 8 2803 lbs (1271.42 kg) 6

4.5 ft. (1370 mm) 61˚ ±25˚ 4608 lbs (2090.15 kg) 10 3291 lbs (1492.77 kg) 7

5.0 ft. (1520 mm) 63˚ ±25˚ 5268 lbs (2389.52 kg) 12 3763 lbs (1706.87 kg) 8

5.5 ft. (1680 mm) 65˚ ±25˚ 5913 lbs (2682.09 kg) 13 4224 lbs (1915.97 kg) 9

6.0 ft. (1830 mm) 69˚ ±25˚ 6547 lbs (2969.67 kg) 15 4676 lbs (2121.00 kg) 10

6.5 ft. (1980 mm) 71˚ ±25˚ 7172 lbs (3253.16 kg) 16 5123 lbs (2323.75 kg) 11

7.0 ft. (2130 mm) 72˚ ±25˚ 7172 lbs (3253.16 kg) 16 5565 lbs (2524.24 kg) 12

7.5 ft. (2290 mm) 73˚ ±25˚ 7172 lbs (3253.16 kg) 16 6004 lbs (2723.37 kg) 13

8.0 ft. (2440 mm) 74˚ ±25˚ 7172 lbs (3253.16 kg) 16 6441 lbs (2921.59 kg) 14

8.5 ft. (2590 mm) 75˚ ±25˚ 7172 lbs (3253.16 kg) 16 6875 lbs (3118.45 kg) 15

9.0 ft. (2740 mm) 76˚ ±25˚ 7172 lbs (3253.16 kg) 16 7307 lbs (3314.40 kg) 16

Table 4. Minimum Allowable Bridle Leg Lengths with Varying Number of M3D Loudspeakers

5:1 Safety Factor 7:1 Safety Factor

Maximum Number of

M3Ds

Maximum Angle

Between Bridle and

Grid α (deg)

Minimum Allowable

Bridle Leg Lengths

Maximum Angle

Between Bridle and

Grid α (deg)

1 43˚ 3.00 ft. (910 mm) 47˚ 3.25 ft. (990 mm)

2 43˚ 3.00 ft. (910 mm) 47˚ 3.25 ft. (990 mm)

3 43˚ 3.00 ft. (910 mm) 47˚ 3.25 ft. (990 mm)

4 43˚ 3.00 ft. (910 mm) 47˚ 3.25 ft. (990 mm)

5 43˚ 3.00 ft. (910 mm) 52˚ 3.75 ft. (1140 mm)

6 47˚ 3.25 ft. (990 mm) 57˚ 4.00 ft. (1220 mm)

7 51˚ 3.50 ft. (1070 mm) 61˚ 4.50 ft. (1370 mm)

8 57˚ 4.00 ft. (1220 mm) 63˚ 5.00 ft. (1520 mm)

9 59˚ 4.25 ft. (1300 mm) 65˚ 5.50 ft. (1680 mm)

10 61˚ 4.50 ft. (1370 mm) 68˚ 5.75 ft. (1750 mm)

11 62˚ 4.75 ft. (1450 mm) 70˚ 6.25 ft. (1910 mm)

12 63˚ 5.00 ft. (1520 mm) 72˚ 6.75 ft. (2060 mm)

Minimum Allowable

Bridle Leg Lengths

13 65˚ 5.50 ft. (1680 mm) 73˚ 7.25 ft. (2210 mm)

14 68˚ 5.75 ft. (1750 mm) 74˚ 7.75 ft. (2360 mm)

15 70˚ 6.25 ft. (1910 mm) 75˚ 8.25 ft. (2510 mm)

16 71˚ 6.50 ft. (1980 mm) 76˚ 8.75 ft. (2670 mm)

The suspended weight allowable for each bridle length is shown for both a 5:1 and a 7:1 safety factor. These weights are based on total suspended weight, including M3D loudspeakers and an MTG-3D Top Grid.

NOTE: Each motor must be rated to support

the total weight of the entire array, including any added equipment or loudspeakers.

The distance between lifting lugs in the congurations shown in Figure 34 is 52.5 inches (1334 mm).

The minimum allowable bridle lengths shown in Table 4 are based on both a safety factor of 5:1 and a safety factor of 7:1. Use the appropriate value when using Table 4 to calculate allowable bridle lengths and allowable number of M3D loudspeakers that may be hung in a specic venue.

NOTE: The maximum number of M3D

loudspeakers that may be hung in each pickup conguration is based on the M3D weight of 415 pounds (188.24 kg). The suspended weight includes loudspeakers and an MTG-3D Top Grid.

CONFIGURATION B

Use Table 5 and Table 6 when the lifting conguration uses bridle legs spanning the short sides of the M3D as shown in Figure 35.

Figure 35. Using bridle leg short side pickup points (BRP 1)

Table 5: Suspended Weight and Quantity of M3D Loudspeakers with Varying Bridle Leg Lengths

Angle

5:1 Safety Factor 7:1 Safety Factor

Between

Bridle Leg

Lengths

Bridle

and Grid

α (deg)

Max

Top Grid

Angle

Maximum Allowable

Suspended Weight

Maximum Allowable

Qty. of M3Ds

Maximum Allowable

Suspended Weight

Maximum Allowable

Qty. of M3Ds

2.0 ft. (610 mm) 51˚ ±25˚ 3317 lbs (1504.57 kg) 7 2369 lbs (1074.56 kg) 5

2.5 ft. (760 mm) 60˚ ±25˚ 4570 lbs (2072.92 kg) 10 3265 lbs (1480.98 kg) 7

3.0 ft. (910 mm) 66˚ ±25˚ 5742 lbs (2604.53 kg) 13 4101 lbs (1860.18 kg) 9

3.5 ft. (1070 mm) 68˚ ±25˚ 6874 lbs (3117.99 kg) 15 4910 lbs (2227.14 kg) 11

4.0 ft. (1220 mm) 72˚ ±25˚ 7983 lbs (3621.03 kg) 16 5702 lbs (2586.38 kg) 13

4.5 ft. (1370 mm) 74˚ ±25˚ 7983 lbs (3621.03 kg) 16 6484 lbs (2941.09 kg) 15

5.0 ft. (1520 mm) 76˚ ±25˚ 7983 lbs (3621.03 kg) 16 7258 lbs (3292.17 kg) 16

Table 6. Minimum Allowable Bridle Leg Lengths with Varying Number of M3D Loudspeakers

5:1 Safety Factor 7:1 Safety Factor

Qty. of M3Ds

Angle Between Bridle

and Grid α (deg)

Minimum Allowable

Bridle Leg Lengths

Angle Between Bridle

and Grid α (deg)

1 51˚ 2.00 ft. (610 mm) 51˚ 2.00 ft. (610 mm)

2 51˚ 2.00 ft. (610 mm) 51˚ 2.00 ft. (610 mm)

3 51˚ 2.00 ft. (610 mm) 51˚ 2.00 ft. (610 mm)

4 51˚ 2.00 ft. (610 mm) 51˚ 2.00 ft. (610 mm)

5 51˚ 2.00 ft. (610 mm) 51˚ 2.00 ft. (610 mm)

6 51˚ 2.00 ft. (610 mm) 56˚ 2.25 ft. (690 mm)

7 51˚ 2.00 ft. (610 mm) 60˚ 2.50 ft. (760 mm)

8 56˚ 2.25 ft. (690 mm) 63˚ 2.75 ft. (840 mm)

9 60˚ 2.50 ft. (760 mm) 66˚ 3.00 ft. (910 mm)

10 60˚ 2.50 ft. (760 mm) 68˚ 3.50 ft. (1070 mm)

11 63˚ 2.75 ft. (840 mm) 71˚ 3.75 ft. (1140 mm)

12 66˚ 3.00 ft. (910 mm) 71˚ 3.75 ft. (1140 mm)

13 66˚ 3.00 ft. (910 mm) 72˚ 4.00 ft. (1220 mm)

Minimum Allowable

Bridle Leg Lengths

14 67˚ 3.25 ft. (990 mm) 73˚ 4.25 ft. (1300 mm)

15 68˚ 3.50 ft. (1070 mm) 74˚ 4.75 ft. (1450 mm)

16 71˚ 3.75 ft. (1140 mm) 76˚ 5.00 ft. (1520 mm)

When calculating allowable lifting loads and bridle leg lengths for the lifting condition illustrated in Figure 35, use Table 5 and Table 6 to determine the maximum number of M3Ds and allowed bridle leg lengths required to conform to the appropriate safety factor for the venue.

The distance between lifting lugs in the conguration shown in Figure 35 is 29.35 inches (746 mm).

CONFIGURATION C

Use Table 7 and Table 8 when the bridle legs are parallel to the side of the M3D and when the rear pickup points are on the closed MTG-3D Top Grid extension as shown in Figure

36.

Figure 36. Using bridle leg short side pickup points (BRP 2)

Table 7. Suspended Weight and Quantity of M3D Loudspeakers with Varying Bridle Leg Lengths

Angle

5:1 Safety Factor 7:1 Safety Factor

Between

Bridle Leg

Lengths

Bridle

and Grid

α (deg)

Max

Top Grid

Angle

Maximum Allowable

Suspended Weight

Maximum

Allowable Qty.

of M3Ds

Maximum Allowable

Suspended Weight

Maximum

Allowable Qty.

of M3Ds

2.0 ft. (610 mm) 41˚ ±25˚ 2259 lbs (1024.67kg) 4 1614 lbs (732.10 kg) 3

2.5 ft. (760 m m) 52˚ ±25˚ 3416 lbs (1549.47kg) 7 2440 lbs (1106.77 kg) 5

3.0 ft. (910 mm) 60˚ ±25˚ 4438 lbs (2013.04 kg) 10 3170 lbs (1437.89 kg) 7

3.5 ft. (1070 mm) 64˚ ±25˚ 5402 lbs (2450.31 kg) 12 3859 lbs (1750.41 kg) 8

4.0 ft. (1220 mm) 67˚ ±25˚ 6335 lbs (2873.51 kg) 14 4525 lbs (2052.51 kg) 10

4.5 ft. (1370 mm) 70˚ ±25˚ 7248 lbs (3287.64 kg) 16 5177 lbs (2348.25 kg) 11

5.0 ft. (1520 mm) 72˚ ±25˚ 7248 lbs (3287.64 kg) 16 5820 lbs (2639.91 kg) 13

5.5 ft. (1680 mm) 74˚ ±25˚ 7248 lbs (3287.64 kg) 16 6457 lbs (2928.85 kg) 14

6.0 ft. (1830 mm) 75˚ ±25˚ 7248 lbs (3287.64 kg) 16 7089 lbs (3215.52 kg) 16

Table 8. Minimum Allowable Bridle Leg Lengths with Varying Number of M3D Loudspeakers

5:1 Safety Factor 7:1 Safety Factor

Qty. of M3Ds

Angle Between Bridle

and Grid ∝ (deg)

Minimum Allowable

Bridle Leg Lengths

Angle Between Bridle

and Grid ∝ (deg)

2 43˚ 2.25 ft. (690 mm) 47˚ 2.25 ft. (690 mm)

3 43˚ 2.25 ft. (690 mm) 47˚ 2.25 ft. (690 mm)

4 43˚ 2.25 ft. (690 mm) 47˚ 2.25 ft. (690 mm)

5 43˚ 2.25 ft. (690 mm) 52˚ 2.50 ft. (760 m)

6 47˚ 2.25 ft. (690 mm) 56˚ 2.75 ft. (840 m)

7 52˚ 2.50 ft. (760 mm) 62˚ 3.25 ft. (990 m)

8 56˚ 2.75 ft. (840 mm) 64˚ 3.50 ft. (1070 mm)

9 60˚ 3.00 ft. (910 mm) 65˚ 3.75 ft. (1140 mm)

10 60˚ 3.00 ft. (910 mm) 68˚ 4.25 ft. (1300 mm)

11 62˚ 3.25 ft. (990 mm) 69˚ 4.25 ft. (1300 mm)

12 64˚ 3.50 ft. (1070 mm) 71˚ 4.75 ft. (1450 mm)

13 65˚ 3.75 ft. (1140 mm) 72˚ 5.00 ft. (1520 mm)

14 67˚ 4.00 ft. (1220 mm) 73˚ 5.25 ft. (1600 mm)

Minimum Allowable

Bridle Leg Lengths

15 69˚ 4.25 ft. (1300 mm) 74˚ 5.75 ft. (1750 m)

16 70˚ 4.50 ft. (1370 mm) 75˚ 6.00 ft. (1830 mm)

When calculating allowable lifting loads and bridle leg lengths for the lifting condition illustrated in Figure 36, use Table 7 and Table 8 to determine the maximum number of M3Ds and the allowed bridle leg lengths required to conform to the appropriate safety factor for the venue.

The distance between lifting lugs in the conguration shown in Figure 36 is 36 inches (914 mm).

CONFIGURATION D

Figure 37. Bridle legs using attachment points on an extended MTG-3D Top Grid (BRP 3)

When using bridle legs spanning the short side of the M3D (front to back) with the pickup attached to the extended MTG-3D Top Grid pickup points as shown in Figure 37, use Table 9 and Table 10 to determine the maximum number of M3Ds and the allowed bridle leg lengths required to conform to the appropriate safety factor for the venue.

Table 9. Suspended Weight and Quantity of M3D Loudspeakers with Varying Bridle Leg Lengths

Angle

5:1 Safety Factor 7:1 Safety Factor

Between

Bridle Leg

Lengths

Bridle

and Grid

α (deg)

Max

Top Grid

Angle

Maximum Allowable

Suspended Weight

Maximum

Allowable Qty.

of M3Ds

Maximum Allowable

Suspended Weight

Maximum

Allowable Qty.

3.5 ft. (107 mm) 47˚ ±25˚ 3102 lbs (1407.04 kg) 6 2216 lbs (1005.16 kg) 4

4.0 ft. (122 mm) 55˚ ±25˚ 3818 lbs (1731.82 kg) 8 2727 lbs (1236.95 kg) 5

4.5 ft. (137 mm) 60˚ ±25˚ 4494 lbs (2038.44 kg) 10 3210 lbs (1456.03 kg) 7

5.0 ft. (152 mm) 62˚ ±25˚ 5145 lbs (2333.73 kg) 11 3675 lbs (1666.95 kg) 8

5.5 ft. (168 mm) 66˚ ±25˚ 5780 lbs (2621.76 kg) 13 4129 lbs (1872.88 kg) 9

6.0 ft. (183 mm) 68˚ ±25˚ 6404 lbs (2904.81 kg) 14 4574 lbs (2074.73 kg) 10

6.5 ft. (198 mm) 71˚ ±25˚ 7019 lbs (3183.76 kg) 16 5014 lbs (2274.31 kg) 11

7.0 ft. (213 mm) 72˚ ±25˚ 7019 lbs (3183.76 kg) 16 5449 lbs (2471.62 kg) 12

7.5 ft. (229 mm) 73˚ ±25˚ 7019 lbs (3183.76 kg) 16 5880 lbs (2667.12 kg) 13

8.0 ft. (244 mm) 74˚ ±25˚ 7019 lbs (3183.76 kg) 16 6309 lbs (2861.71 kg) 14

8.5 ft. (259 mm) 75˚ ±25˚ 7019 lbs (3183.76 kg) 16 6736 lbs (3055.40 kg) 15

9.0 ft. (274 mm) 76˚ ±25˚ 7019 lbs (3183.76 kg) 16 7160 lbs (3247.72 kg) 16

of M3Ds

Table 10. Minimum Allowable Bridle Leg Lengths with Varying Number of M3D Loudspeakers

5:1 Safety Factor 7:1 Safety Factor

Qty. of M3Ds

Angle Between Bridle

and Grid ∝ (deg)

Minimum Allowable

Bridle Leg Lengths

Angle Between Bridle

and Grid ∝ (deg)

1 43˚ 3.25 ft. (990 mm) 47° 3.50 ft (1070 mm)

2 43˚ 3.25 ft. (990 mm) 47˚ 3.50 ft. (1070 mm)

3 43˚ 3.25 ft. (990 mm) 47˚ 3.50 ft. (1070 mm)

4 43˚ 3.25 ft. (990 mm) 47˚ 3.50 ft. (1070 mm)

5 43˚ 3.25 ft. (990 mm) 51˚ 3.75 ft. (1140 mm)

6 47˚ 3.50 ft. (1070 mm) 57˚ 4.25 ft. (1300 mm)

7 51˚ 3.75 ft. (1140 mm) 60˚ 4.50 ft. (1370 mm)

8 55˚ 4.00 ft. (1220 mm) 62˚ 5.00 ft. (1520 mm)

9 57˚ 4.25 ft. (1300 mm) 66˚ 5.50 ft. (1680 mm)

10 60˚ 4.50 ft. (1370 mm) 70˚ 6.25 ft. (1900 mm)

11 62˚ 5.00 ft. (1520 mm) 71˚ 6.50 ft. (1980 mm)

12 64˚ 5.25 ft. (1600 mm) 72˚ 7.00 ft. (2130 mm)

13 66˚ 5.50 ft. (1680 mm) 73˚ 7.50 ft. (2290 mm)

Minimum Allowable

Bridle Leg Lengths

14 67˚ 5.75 ft. (1750 mm) 74˚ 7.75 ft. (2360 mm)

15 68˚ 6.25 ft. (1910 mm) 75˚ 8.25 ft. (2510 mm)

16 71˚ 6.50 ft. (1980 mm) 76˚ 8.75 ft. (2670 mm)

CONFIGURATION E

Figure 38. Using center pickup points

The pickup conguration using the center pickup points on the MTG-3D is shown in Figure 38.

CAUTION: The MTG-3D Top Grid must

not rotate (tilt) more than 12 degrees from horizontal.

Table 11. Suspended Weight and Quantity of M3D Loudspeakers

Angle

Between

Bridle

Leg

Lengths

N/A N/A ±12˚ 6404 lbs (2904.81 kg) 1 to 14 4574 lbs (2074.73 kg) 1 to 10

Bridle

and Grid

α (deg)

NOTE: Each motor must be rated to support

the total weight of the entire array.

Max

Top Grid

Angle

Maximum Allowable

Suspended Weight

5:1 Safety Factor 7:1 Safety Factor

Maximum

Allowable Qty.

of M3Ds

Maximum Allowable

Suspended Weight

Qty. of M3Ds

Maximum Allowable

CONFIGURATION F

When an array is lifted with a separate motor attached to each of the MTG-3D corner lifting points, as shown in Figure 39, an array of up to 16 M3Ds can be supported (see Table 12).

Each motor hook may be attached to the corner of the MTG-3D Top Grid with two 5/8-inch or 3/4-inch shackles. There is a maximum combination of 16 M3D and M3DSub or other loudspeakers, such as MSL4s and CQs, which can be underhung in this conguration. The total weight of the hung system cannot exceed the total equivalent weight of 16 M3Ds.

NOTE: Each pair of motors must be rated to

support the total weight of the entire array.

BRP 1 BRP 2 BRP 3

Figure 39. Separate motor conguration with the rear extension frame either retracted or extended

Table 12. Suspended Weight and Quantity of M3D Loudspeakers

Angle

5:1 Safety Factor 7:1 Safety Factor

Between

Bridle

Leg

Lengths

N/A N/A ±25˚

Bridle

and Grid

α (deg)

Max

Top Grid

Angle

Maximum Allowable

Suspended Weight

7089 lbs (3215 kg)

Maximum

Allowable Qty.

of M3Ds

1 to 16

Maximum Allowable

Suspended Weight

7089 lbs (3215 kg)

Maximum Allowable

Qty. of M3Ds

1 to 16

CONFIGURATION G

In conguration G, the steel cables are connected to a single lift point from the four rigging points on the MTG-3D Top Grid.

The array is lifted from a single point attached to each of the MTG-3D Top Grid corner lifting points as shown in Figure

40. An array of up to 16 M3Ds can be supported.

The four-way bridle may be attached to each corner of the MTG-3D Top Grid with four 5/8-inch or four 3/4inch shackles. The combined weight of the maximum combination of M3Ds and M3D-Subs or other loudspeakers, such as MSL-4s and CQs, which can be under-hung in this conguration, cannot exceed the total equivalent weight of the allowable number of M3Ds as shown in Table 13.

NOTE: The lift mechanism must be rated to

support the total weight of the entire array.

The array must have suitable tie-downs to eliminate sway and twist.

CAUTION: DO NOT use the MTG-3D Top

Grid in the extended position when an array is hung from a single point as shown in Figure 40.

BRP 1 BRP 2 DO NOT use this hanging

Figure 40. Single point pickup conguration

Table 13. Suspended Weight and Quantity of M3D Loudspeakers

Angle

Between

Bridle

Bridle Leg

Lengths

3.25 ft. (990 mm) 43˚ ±25˚

and Grid

α (deg)

Max

Top

Grid

Angle

Maximum Allowable

Suspended Weight

7089 lbs (3215 kg)

5:1 Safety Factor 7:1 Safety Factor

Maximum

Allowable Qty.

of M3Ds

1 to 16

conguration (BRP 3)

Maximum Allowable

Suspended Weight

7089 lbs (3215 kg)

Maximum Allowable

Qty. of M3Ds

1 to 16

APPENDIX B — PHYSICAL SPECIFICATIONS

30.50"

[775 mm]

cti

clearance from this surface and adequate ventilation.

Auto-Voltage Select

95-125V ~ 208-235V~

Turn on 165V~ Turn off 264V~

Turn on 85V~ Turn off 134V

Operational Voltage Range:

400W RMS MAX 1400W RMS MAX

50-60Hz 5

0-60Hz

THIS APPARATUS MUST BE EARTHED.

To reduce the risk of electric shock do not remove cover.

UND REPARATUR NUR DURCH ELEKTROF√CHKRAFTE

GEH√USE NICHT OFFENE WARTUNG

ACHTUNG:

INTERNES NE SONT AUTORISEES QU'AU

U.K. WARNING:

PERSONNEL TECHNIQUE QUALIFI…

REFER SERVICING TO QUALIFIED PERSONNEL.

NO OPERATOR SERVICEABLE PARTS INSIDE.

ENTRETIENET REPARATION

ATTENTION:

ACCESO INTERNO SOLO

To reduce the risk of fire or electric shock

Refer servicing to qualified personnel.

No operator or serviceable parts inside

AUTHORIZADO A PERSONAL T…CNICO CALIFICO

do not expose this appliance to rain or moisture.

ATENCI”N:

THIS PRODUCT MUST BE GROUNDED

This surface may reach high tempuratures white in use.

WARNINGS:

To ensure proper operation, allow at least 6 inches

51.00"

[1295 mm]

54.00"

[1372 mm]

9.56"

[243 mm]

20.00"

[508 mm]

8.50"

[216 mm]

10.00"

[254 mm]

M3D PHYSICAL SPECIFICATIONS

Enclosure Multi-ply hardwood

Finish Black textured (weather protected)

Note: Custom color available upon request

Protective grill Powder-coated hex stamped steel

Rigging QuickFly MRF-3D Rigging Frame with integral CamLinks, rear connecting bars, and captive

quick release pins

Weather protection Standard

Dimensions 54" W x 20" H x 30.5" D (1372 mm x 508 mm x 775 mm)

Weight Net: 415 lbs (188 kg)

Figure 41. M3D Loudspeaker physical dimensions

M3D-SUB PHYSICAL SPECIFICATIONS

20.00"

[508 mm]

30.50"

[775 mm]

8.50"

[215 mm]

10.00"

[254 mm]

9.56"

[243 mm]

To ensure proper operation, allow at least 6 inches

WARNINGS:

This surface may reach high tempuratures white in use.

THIS PRODUCT MUST BE GROUNDED

ATENCI”N:

do not expose this appliance to rain or moisture.

AUTHORIZADO A PERSONAL T…CNICO CALIFICO

No operator or serviceable parts inside. Refer servicing to qualified personnel

To reduce the risk of fire or electric shoc

ATTENTION:

NO OPERATOR SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.

PERSONNEL TECHNIQUE QUALIFI…

U.K. WARNING:

INTERNES NE SONT AUTORISEES QU'AU

ACHTUNG:

UND REPARATUR NUR DURCH ELEKTROF√CHKRAFTE

To reduce the risk of electric shock do not remove cover.

50-60Hz 50-60Hz 1400W RMS MAX 1400W RMS MA

Operational Voltage Range: Turn on 85V~ Turn off 134V~ Turn on 165V~ Turn off 264V

95-125V

~ 208-235V~

uto-Voltage Select

clearance from this surface and adequate ventilation.

Acti

vit

Ser

ENTRETIENET REPARATIONS

THIS APPARATUS MUST BE EARTHED

GEH√USE NICHT OFFENE WARTUNG

ACCESO INTERNO SOLO

51.00"

[1295 mm]

54.00"

[1372 mm]

Enclosure Multi-ply hardwood

Finish Black textured (weather protected)

Note: Custom color available upon request

Protective grill Powder-coated hex stamped steel

Rigging QuickFly MRF-3D Rigging Frame with integral CamLinks, rear connecting bars, and

captive quick release pins

Weather protection Standard

Dimensions 54" W x 20" H x 30.5" D (1372 mm x 508 mm x 775 mm)

Weight Net: 395 lbs (179 kg)

Figure 42. M3D-Sub Directional Subwoofer physical dimensions

MTG-3D TOP GRID PHYSICAL SPECIFICATIONS

Finish Black powder coated

Dimensions Width: 55.60" (1412 mm)

Height: 14.54" (369 mm)

Depth with extension in extended position: 50.70" (1288 mm)

Depth with extension in closed position: 37.43" (951 mm)

Weight 308 lbs (139.71 kg)

Figure 43. MTG-3D Top Grid physical dimensions

APPENDIX C — MTF-3D TRANSITION FRAME ASSEMBLY PROCEDURE

Use the following procedure when transitioning in an array from M3Ds to Meyer Sound MSL-4s or CQs (see Figure 44).

Figure 44. Transition frame with downll loudspeakers

MTF-3D TRANSITION FRAME

Each MTF-3D Transition Frame comprises the items shown in Table 14.

4. The adjustable link rear link assemblies include a short link plate, hammer-lok, and chain.

5. The 2.5-inch QRPs are used for holding the chain to the transition frame.

6. Oval handle hitch pins are used for holding the loudspeakers to the transition frame.

7. The lynch pins are used with the oval handle hitch pins.

ATTACHING LOUDSPEAKERS TO TRANSITION FRAME

This procedure can be completed with two stagehands, but is most efcient with three.

1. Position loudspeakers at their approximate desired horizontal splay angle.

2. Prop up all rings and stud rigging rings to their upright position and parallel with the corresponding frame holes.

3. Place the rear arm across the top of the loudspeakers — on the inside of the rigging points — anges up. Note the appropriate slots in the rear arm for the loudspeakers and the desired splay angle:

— Rectangles denote MSL-4s

— Circles denote CQs.

The number inside of the shapes denotes the horizontal splay angle.

Table 14. MTF-3D Transition Frame

Qty Description Part Number

1 Front arm

1 Rear arm

2 Adjustable link front link assembly

2 Adjustable link rear link assembly

4 2.5" quick release pin (QRP)

9 Oval handle hitch pin

9 Lynch pin

61.105.113.01

61.105.114.01

61.105.125.01

61.105.115.01

134.007

134.014

124.060

Table Footnotes

1. The front arm is the larger arm

2. The rear arm is the smaller arm

3. The adjustable link front link assemblies include a long link plate, hammer-lok, and chain.

4. Position the rear arm over the rigging rings so that the rings slide up through the slots. Some repositioning may be necessary to align the rigging rings and slots.

5. Slide the oval handle hitch pins from the rear, across the top of the rear arm and through the rigging rings (and vertical rib or the arm itself) until the hitch pin collar stops against the side of the rear arm.

6. Insert a lynch pin into the hole in the oval handle hitch pin. This will lock the pin into place so that it cannot be removed.

7. Follow the same steps (steps 1 through 6 above) to attach the front arm.

ATTACHING THE ADJUSTABLE LINK ASSEMBLY TO THE MRF-3D RIGGING FRAMES

TIP: When you are lowering the front arm on

to the rings, it is easiest to do so from one side — gradually lowering it to the other side as the rings each t into the corresponding holes in the arm. Once the rst ring is positioned into the rst slot, insert the hitch pin to anchor the front arm. This will simplify the insertion of the other ve hitch pins. The hitch pins should be inserted from the rear of the cabinet toward the front, as with the rear arm.

Rear

1. Slide the rear (short) adjustable link plate up (vertically) inside the rear tube of the MRF-3D.

2. Align the lowest hole in the adjustable link plate with the lower hole in the MRF-3D. Each hole in the adjustable link corresponds with two degrees of vertical splay angle.

3. Slide the QRP through the lower hole, through the adjustable link plate, and then through the hole on the other side (see Figure 45). Make sure the QRP is seated all the way in and locked into place.

Figure 45. Pinning rear adjustable link plate

4. Lower the M3D array over the CQ assembly transition frame and leave approximately 1 inch (25 mm) of clearance between the bottom edge of the lowest M3D and the front arm of the transition frame.

5. Release the QRP in the top of the rear adjustable link, allowing the bottom of the chain assembly to align as follows:

— For 30˚ splay MSL-4s: The front-most hole in the rear

Transition Frame arm

— For 22.5˚ splay MSL-4s: The next to front-most hole

in the rear Transition Frame arm

— For CQs: The rear-most hole in the rear Transition

Frame arm

Slide the QRP through the transition frame hole selected in step 5, the lowest chain link, and then through the transition frame hole on the other side. Make sure the pin is seated all the way in and locked into place.

Repin the top of the rear adjustable link in the highest hole possible without lifting the rear of the MSL-4 cabinets. For most applications, this will be the 2˚ hole.

Front

1. Raise the M3D array to give sufcient space to slide the front (long) adjustable link plate up (vertically) in between the MRF-3D Rigging Frame and the CamLink, and use the same hole that is used to adjust the CamLink (see Figure 46).

2. Remove the QRP holding the CamLink in place. The CamLink should swing down freely.

3. Slide the adjustable link plate up between the CamLink and MRF-3D, aligning the weldment hole with the appropriate hole in the adjustable link plate. The setting should result in a net (relative to the bottom M3D) downtilt of 5˚ (i.e., if the rear hole is pinned at 2˚, then the front hole will be pinned at 7˚).

4. Insert the QRP through the MRF-3D hole just far enough in to temporarily hold the adjustable link plate in place.

5. Rotate the CamLink back up again, and then fully insert the QRP through the CamLink and through the opposite side of the MRF-3D. Make sure the pin is seated all the way in and locked into place.

6. Place the bottom link of the chain in between the two vertical anges on the front arm.

7. Align the link with the holes in the anges and insert a QRP through one ange, through the link, and through the other ange. Make sure the pin is seated all the way in and locked into place.

Figure 46. Pinning front adjustable link plate

GLOSSARY

array A group of own loudspeakers that has been congured to produce optimum sound pressure level

(SPL) and coverage in a particular venue.

block A group of loudspeakers from an array that has been broken down into convenient-sized groups for

transport.

bridle A method of using two steel cables connected to two lifting points on an array’s top grid, brought

together to a common point and attached to a lifting motor.

bridle leg One side of a bridle.

BRP Back rigging point. This is a back pickup point on the MTG-3D Top Grid to which a bridle leg is

attached.

CamLink A Meyer Sound feature that allows quick, positive, and accurate setting of splay angles in an array.

chain bag or bucket A place where the chain from lift motors is stored as the chain moves through the lift motor.

dead hang A lifting conguration where the lifting motors are connected directly to the lifting points on the MTD-

3D Top Grid without the use of a bridle.

dynamic load The changing weight of an array when the rigging motors are in motion, which includes the static

weight and other factors such as acceleration, bounce, and startup forces.

y The process of lifting an array into position in a venue.

FOH Front-of-house

front-to-back A lifting conguration where the lifting motors are attached to bridles connected to the front lifting

and rear lifting points on the MTD-3D Top Grid.

in or incoming Rigging term used to denote hardware moving in a downward direction.

laser level A device used by audio technicians to determine an array’s site angle during setup or at nal trim

position. It also has readout illumination and can be set to relative angles.

lift point That point on an array that has been designed and certied to y an approved array conguration

with the appropriate safety factor (see rigging point).

out Rigging term denoting hardware moving in an upward direction.

pullback or Rigging term used to describe the process of attaching rope, a sling, or a pullback motor to the pullback motor bottom rear of an array to achieve further downtilt than is available using the array’s center of gravity

alone.

QRP Quick Release Pin, 0.5" x 2." (13 mm x 64 mm), used in all M3D rigging points.

rigging point Sometimes referred to as a lift point. This is the point on an array’s MTG-3D Top Grid where a lifting

motor can be connected. These points have been designed and certied to lift an approved array conguration. Rigging point is also used to refer to the position in the venue where a motor will be suspended from the venue structural steel.

SPL Sound pressure level. This is a measurement of the sound energy measured at a specic location in

a venue.

splay The angle between the bottom of a loudspeaker in an array and the top of the next loudspeaker in

the array.

static load A rigging term that describes the actual weight of an array when it is not in motion

top grid A Meyer Sound MTG-3D Top Grid is a rigging element that provides a certied means of transitioning

between lifting motors to the top loudspeaker of an array.

transition frame A Meyer Sound rigging element that provides a certied means of transitioning between different

Meyer Sound loudspeaker types within an array.

trim Also referred to as trimmed position or trim height to mean the nal position of the array after setup.

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

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

Meyer Sound Laboratories Inc.

05.105.400.01 Rev. B

Meyer Sound M3D-SUB User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual