Meyer Sound M3D-SUB - Manuals

viii ix 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 M...

x 1 INTRODUCTION The M3D and M3D-Sub QuickFly rigging system is a complete integrated solution for transporting and flying 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 f...

2 3 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...

4 5 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: 1. The curvature of the array 2. The tilt of the entire array inclusive o...

4 5 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 availa...

6 7 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 ...

8 9 NOTE: When using chains or making custom bridle lengths to achieve vertical tilt, be sure the center of gravity of the final 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 point...

8 9 TIP: If the bottom of the array ends up being too far downstage during assembly, have stagehands breast it upstage until assembly is complete and it is flown to its final trim position. 5. It is often necessary to increase the stability of an array in venues with very high structural steel from ...

10 11 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 (se...

10 11 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...

12 13 ADJUSTING ANGLES 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 indicati...

12 13 Adjusting MTG-3D Top Grid Uptilt 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...

14 15 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. Figure 20. QRP insert...

14 15 Figure 21. Adjusting angle using the alignment block 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 flown...

16 17 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. ADDING A BLOCK OF M3DS TO AN ARRAY 1. Raise the assembled array so that the next b...

16 17 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 flown array behind the lower block approximately 2 inches (50 mm). Fold out the rear link(s) and rotate th...

18 19 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 fly. Use the following procedure to fly rigged blocks and arrays into their final position. Figu...

18 19 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 configuration with M3D loudspeakers to achieve the desired coverage and sound p...

20 21 GENERAL This appendix contains various hanging configurations for M3D loudspeakers using an MTG-3D Top Grid. This appendix also contains allowable configurations of bridle attachments, bridle lengths, attachment points on the MTG-3D Top Grid, the maximum weight, and maximum number of M3D louds...

20 21 CONFIGURATION A Figure 34 illustrates the hanging configurations that are considered in the calculations listed in Table 3 and Table 4. In these configurations, the distance between the attachment points on the MTG-3D Top Grid is 52.50 inches (1334 mm). Figure 34. Bridles in front-to-back conf...

22 23 CONFIGURATION B Figure 35. Using bridle leg short side pickup points (BRP 1) Use Table 5 and Table 6 when the lifting configuration uses bridle legs spanning the short sides of the M3D as shown in Figure 35. Table 5: Suspended Weight and Quantity of M3D Loudspeakers with Varying Bridle Leg Len...

24 25 CONFIGURATION C Figure 36. Using bridle leg short side pickup points (BRP 2) 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. Table 7. Suspended Weight and Quantit...

26 27 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...

28 29 CONFIGURATION E Figure 38. Using center pickup points The pickup configuration 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 Loudspea...

30 31 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-in...

30 31 CONFIGURATION G In configuration 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 ...

32 33 APPENDIX B — PHYSICAL SPECIFICATIONS 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 ...

32 33 M3D-SUB 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 quic...

34 35 Figure 43. MTG-3D Top Grid physical dimensions

34 35 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 downfill loudspeakers MTF-3D TRANSITION FRAME Each MTF-3D Transition Frame comprises the i...

36 37 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 fit into the corresponding holes in the arm. Once the first ring is pos...

36 37 Front 1. Raise the M3D array to give sufficient 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). Figure 46. Pinning front adjustable link plate 2....

38 39 GLOSSARY A array A group of flown loudspeakers that has been configured to produce optimum sound pressure level (SPL) and coverage in a particular venue. B block A group of loudspeakers from an array that has been broken down into convenient-sized groups for transport. bridle A method of using...