assembly guide
m series
mg-3d/m multipurpose grid and accessories
Keep these important assembly instructions.
Refer to the MILO 120 Operating Instructions for
additional information on that product.
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mg-3d/m multipurpose grid and accessories
contents
This Assembly Guide provides instructions on how to safely assemble and use the MG-3D/M multipurpose grid and
accessories. In addition to descriptions of the MG-3D/M grid's major components, this guide will show you how the
components work together, with examples of common uses.
1. general information ............................................................................................................................................5
Safety Statement...................................................................................................................................................5
MG-3D/M Multipurpose Grid Overview ................................................................................................................7
Load Ratings Overview .........................................................................................................................................8
2. using milo® with the mg-3d/m grid ................................................................................................................9
MILO System Load Ratings and Pickup Configurations.......................................................................................9
Using One or Both Center Points ...................................................................................................................9
Using All Four Corner Points ........................................................................................................................10
MLK-MILO Link Kit..............................................................................................................................................12
MG-3D/M Grid and MILO Rear Flown Configuration..........................................................................................13
MG-3D/M Grid and MILO Front Flown Configuration.........................................................................................14
MILO Ground-Supported Configurations ...........................................................................................................15
3. using m3d/m3d-sub with the mg-3d/m grid................................................................................................16
M3D System Load Ratings and Pickup Configurations......................................................................................16
Using One or Both Center Points .................................................................................................................16
Using All Four Corner Points ........................................................................................................................17
MLK-3D Link Kit ..................................................................................................................................................19
MG-3D/M Grid and M3D/M3D-Sub Rear Flown Configuration ..........................................................................20
MG-3D/M Grid and M3D/M3D-Sub Front Flown Configuration..........................................................................21
M3D/M3D-Sub Ground-Supported Configurations ...........................................................................................22
4: transitions and accessories ............................................................................................................................23
MTR-3D/M Transition Rail Kit: M3D/M3D-Sub to MILO......................................................................................23
MTB-2D/M Transition Bar Kit: MILO to M2D.......................................................................................................25
MTK-2D Transition Kit: M3D/M3D-Sub to M2D ..................................................................................................26
PBF-MILO Pull-Back Frame................................................................................................................................27
MVE-MILO Vertical Extension Bars.....................................................................................................................28
MCF-MILO Caster Frame Kit...............................................................................................................................29
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mg-3d/m multipurpose grid and accessories
1. general information
safety statement
Please read this Statement carefully and in its entirety. It contains important information regarding safety issues, including
guidelines for general safe use of rigging systems as well as advisories on government regulations and liability laws.
scope of tHis manual
Although this manual contains much useful information on rigging in general, it does not claim to be a comprehensive re-
source on the subject. This manual assumes that the owners and/or users of a QuickFly system are knowledgeable and expe-
rienced in the areas of rigging and flying loudspeaker systems. MANy ISSUES OF CRUCIAL CONCERN, SUCh AS ThE DE-
TERMINATION 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.
load ratings and specifications
Long-term safe operation is a central concern in the design and manufacture of any rigging/flying system. Meyer Sound has
taken great care in material selection and component design. After manufacture, all load-critical system components are
individually inspected.
All load ratings and other specifications given in this manual are the result of accepted engineering practice and careful test-
ing. however, such specifications and ratings are subject to change. USERS ShOULD ChECK ThE QUICKFLy SECTION OF
ThE MEyER SOUND wEB SITE AT
OR CONTACT TEChNICAL SUPPORT AT REGULAR INTERVALS TO ChECK FOR UPDATED OR REVISED INFORMATION.
regulatory compliance
The design and safe working load (SwL) ratings of the QuickFly system are intended to be in compliance with all known
regulatory statutes currently applicable in the United States. Unless otherwise specified, all working loads are based on either
a 5:1 or 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 officials in one location may have a stricter interpretation than
another local official, even when operating under the same regulations and in the same legal jurisdiction.
CONSEQUENTLy, USERS OF QUICKFLy RIGGING SySTEMS ShOULD BE PREPARED TO TAKE ADDITIONAL SAFETy AS-
SURANCE 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.
Meyer Sound Laboratories Inc.
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mg-3d/m multipurpose grid and accessories
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 should double-check to make certain that attachment points are
approved and suitably load rated, and that the points used are those identified as such by the venue owner or operator. AS
AN ExTRA PRECAUTION, CAREFUL INSPECTION OF ThE ATTAChMENT POINTS IS ADVISED BEFORE FLyING, PARTICU-
LARLy 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.
BECAUSE OF ThE SAFETy ISSUES INVOLVED, USERS MUST ADOPT AND ADhERE TO A SChEDULE OF REGULAR IN-
SPECTION 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
fluids. Nevertheless, normal use and shipping vibrations can wear through the protective coatings, and extremely corrosive
fluids (such as battery acid) can cause severe damage with prolonged exposure even to protected parts. Particular atten-
tion should be given to screws, bolts, and other fasteners to make certain the fittings are tight and secure. Metal seams and
welds should be examined for any sign of separation or deformation. Meyer Sound strongly recommends that written docu-
mentation be maintained on each QuickFly system, noting date of inspection, name of inspector, points of system checked,
and any anomalies discovered.
annual comprehensive examination and test program
In addition to routine checks on the road for touring systems, Meyer Sound also recommends a careful, comprehensive
system examination and testing “at home” in the warehouse or other appropriate location at regular intervals. Such at home
examinations and tests should occur at least once a year, and should include a careful inspection of each component under
ideal lighting conditions, and then a final comprehensive check of the entire system after it has been flown.
If any anomalies or defects are discovered that could possibly affect the safety or integrity of the system, affected parts or
subsystems should be replaced in their entirety before that part of the system is flown again.
replacement parts
Any component found to be defective, or any safety-related component you even suspect might be defective, should be re-
placed with the equivalent, approved part. Parts specific to a QuickFly system should be ordered directly from Meyer Sound.
No attempt should be made to substitute what appears to be equivalent or “mostly the same” generic replacements. Some
parts used in QuickFly systems are identical to those used in other rigging applications. To the best of our knowledge, most
of these suppliers are reputable and their products are reliable. however, Meyer Sound has no way of assuring the quality of
products made by these various suppliers. Therefore, Meyer Sound is not responsible for problems caused by components
that were not supplied by Meyer Sound.
training
QuickFly systems are relatively straightforward and easy to use. however, they should only be used by persons trained in the
use of loudspeaker rigging systems who have mastered key points of assembly, rigging and flying. 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.
Meyer Sound Laboratories Inc.
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mg-3d/m multipurpose grid and accessories
mg-3d/m multipurpose grid overview
The MG-3D/M multipurpose grid allows multiple MILO® high-power curvilinear array loudspeakers and/or M3D line
array loudspeakers (or M3D-Sub directional subwoofers) to be flown or ground-supported in numerous configurations.
list of contents: mg-3d/m multipurpose grid kit (part 40.132.035.01)
Required for use with MILO loudspeaker(s)
Qty part number
description
1
4
40.132.035.01
124.078
MG-3D/M Multipurpose Grid Assembly
Stainless Steel Leveling Foot
mg-3d/m multipurpose grid dimensions:
mg-3d/m multipurpose grid weight: 275 lbs (124.74 kg)
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mg-3d/m multipurpose grid and accessories
load ratings overview
The MG-3D/M multipurpose grid can accommodate a variety of different pickup configurations using its six pick-
up points (three on each side of the frame). All of the load ratings in this assembly guide take the following into
consideration:
The angle of the bridle at the apex is no greater than 90 degrees.
The weight of the MG-3D/M grid itself has been included.
The maximum number of MILO loudspeakers that may be hung in each configuration is based on the MILO weight
of 235 lbs (106.60 kg).
The maximum number of M3D/M3D-Sub loudspeakers that may be hung is based on the M3D weight of 415 lbs
(188.24 kg) and the M3D-Sub weight of 395 lbs (179.17 kg).
The load ratings and maximum weights allowed regard the MG-3D/M grid and flown loudspeakers as a system,
including links and pins. Thus, the maximum stress point could change from one element to another in the system.
caution: Using a bridle leg shorter than the recommended length for each configuration will reduce
the load rating and may damage the MG-3D/M grid.
caution: Always use properly rated rigging hardware. The use of 3/4" shackles for the MG-3D/M
grid's pick-up points is recommended.
when flying an array of loudspeakers as discussed in this guide, the entire weight of the array can shift completely to
either the front or back motor or set of motors; the degree of shift depends on the splay between individual cabinets
in the array, the number of cabinets, and the angle of the MG-3D/M grid. Accordingly, this guide rates the MG-3D/M
rigging system for the "worst case" loadings that can occur at the final trim of an array while maintaining a 5:1 or 7:1
safety factor. Configurations using angled bridles are shown with an angle at the apex of 90 degrees, resulting in the two
angles between the bridle and MG-3D/M grid at the prescribed bridle length (45 degrees each).
with the use of transition accessories, you can also integrate other M Series loudspeakers with MILO or M3D/M3D-
Sub loudspeakers, to form combined arrays such as:
M3D/M3D-Sub and MILO
MILO and M2D
M3D and M2D
M3D, MILO and M2D
caution: The weight of any additional items hung with the array, such as downfill loudspeakers and
transition accessories and cable, must be considered when calculating maximum load.
Meyer Sound Laboratories Inc.
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mg-3d/m multipurpose grid and accessories
2. using milo witH tHe mg-3d/m grid
milo system load ratings and pickup configurations
using one or both center pickup points
Figure 2.1. 2 to 2 center point configuration
Figure 2.2. 2 to 1 center point configuration
Figure 2.3. 3 to 2 center/corner point configuration
Figure 2.4. 3 to 2 corner/center point configuration
max. suspended weight and Quantity of milo loudspeakers, using center pickup points
Grid Tilt
in Degrees
Min. Bridle
Leg Length
5:1 Safety Factor
7:1 Safety Factor
Max. weight Max. Quantity Max. weight Max. Quantity
0 to 45
3 ft
(915 mm)
4700 lbs
(2131 kg)
18 (see note 1
on page 11)
3350 lbs
(1520 kg)
13 (see note 1
on page 11)
46 to 90
3 ft
(915 mm)
3570 lbs
(1619 kg)
14
2700 lbs
(1225 kg)
10
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mg-3d/m multipurpose grid and accessories
milo system load ratings and pickup configurations
using all four corner pickup points
Figure 2.5. 4 to 2 corner point configuration
Figure 2.6. 4 to 4 corner point configuration1
Figure 2.7. 4 to 2 corner cross point configuration
Figure 2.8. 4 to 1 corner point configuration2
max. suspended weight and Quantity of milo loudspeakers, using corner pickup points
Grid Tilt
in Degrees
Min. Bridle
Leg Length
5:1 Safety Factor
7:1 Safety Factor
Max. weight Max. Quantity Max. weight Max. Quantity
0 to 45
3 ft (915 mm)2
3 ft (915 mm)2
6000 lbs
(2722 kg)
24
14
5250 lbs
(2381 kg)
21 (see note 2
on page 11)
46 to 90
3570 lbs
(1619 kg)
2700 lbs
(1225 kg)
10
1
2
Please note that the bridle legs are not required in this configuration; the motors can be connected directly to
the MG-3D/M grid using shackles.
The minimum bridle leg length for the 4 to 1 corner point configuration is 4 ft (1219 mm).
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mg-3d/m multipurpose grid and accessories
note 1: For center point configurations, up to 24 MILO loudspeakers with a 5:1 safety factor or 17
MILO loudspeakers with a 7:1 safety factor can be flown only under the following conditions:
Monitoring of the stress load on the two rigging points is done with load cells between the hoist and
the MG-3D/M multipurpose grid, so that either the front or back pickup point used to hang the MG-
3D/M does not exceed 4700 lbs (2131 kg) at 5:1 or 3350 lbs (1520 kg) at 7:1 on the center pick-up
hole.
The total load must be calculated so that it is spread between the front and back points at the final
array position (grid angle and accumulative splay angle of the system) and does not exceed the
above stated weights on either the front or rear point.
An MG-3D/M grid plus 24 MILO loudspeakers weighs approximately 6000 lbs (2721.55 kg). As long as
that total weight is split between the front and rear points so that neither point supports more than 4700
lbs (2131 kg) at 5:1 or 3350 lbs (1520 kg) at 7:1, the safety factor is maintained.
note 2: For corner point configurations, up to 24 MILO loudspeakers at a 7:1 safety factor can be
flown only under the following conditions:
Monitoring of the stress load on the front and back rigging points is done with load cells between the
hoist and the MG-3D/M multipurpose grid, so that either the front or back set of points used to hang
the MG-3D/M do not exceed the total weight load of 5250 pounds (2381.36 kg).
The total load must be calculated so that it is spread between the front and back points at the final
array position (grid angle and cumulative splay angle of the system) and does not exceed the above
stated weight on either the front or rear set of points.
An MG-3D/M grid plus 24 MILO loudspeakers weighs approximately 6000 pounds (2721.55 kg). As long
that total weight is split between the front and rear set of points so that neither set supports more than
5250 pounds (2381.36 kg), the 7:1 safety factor is maintained.
note: Use the Meyer Sound array rigging calculator to compute center-of-gravity data and load
caution: This calculator has been found to match actual load cell measurements to within 16% of the
total weight of the array, and within 3.5 degrees of top grid angle.
Meyer Sound Laboratories Inc.
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mg-3d/m multipurpose grid and accessories
mlk-milo link kit
The MLK-MILO link kit is required to attach a MILO loudspeaker to the MG-3D/M multipurpose grid.
In flown configurations, the first MILO loudspeaker in the array is always connected to the MG-3D/M grid at 0°. In
ground-supported configurations, the first MILO loudspeaker in the array can have from –1° to 4° in relation to the
MG-3D/M grid. In both flown and ground-supported configurations, MILO loudspeakers in an array may be
individually splayed at nine different tilt angles from 0° to 5° (0°, .5°, 1°, 1.5°, 2°, 2.5°, 3°, 4°, 5°), through the selection
of the pin positions in accordance with your system design. Labels on the MG-3D/M grid show the correct orientation
of the MG-3D/M grid for a flown or ground-supported configuration, and the front and rear positions for both MILO
and M3D/M3D-Sub loudspeakers. In addition, please note that:
The orientation of the MG-3D/M grid for a ground-supported configuration is a 180° (flipped) rotation from the
flown position.
For MILO loudspeakers, the front side of the MG-3D/M grid is opposite the side used for flying M3D/M3D-Subs.
list of contents: mlk-milo link kit (part 40.132.125.01)
Required for use with MILO loudspeaker(s)
Qty part number
description
2
2
6
61.132.027.03
61.132.028.01
134.023
MFAL-MILO Front AlignaLink
MRAL-MILO Rear AlignaLink
3/8" x 1.5" Quick Release Pin (QRP)*
*Includes lanyard and necessary hardware
to fix the pin to the MG-3D/M
note: Do not confuse the 3/8" x 1.5" QRPs included with the MLK-MILO link kit with the standard
QRPs used for connecting MILO loudspeakers to each other. The standard MILO end frame QRPs are
shorter and will not lock properly. In addition to being longer, the MLK-MILO kit’s QRPs are distinguished by a
red release button (standard MILO QRPs are blue or black), and include a lanyard for securing each pin to the
MG-3D/M grid (via small screw holes on the inside of the grid). By permanently affixing the QRPs to the
MG-3D/M grid using the lanyards, you can ensure that the correct QRPs are always used.
note: The MFAL-MILO front and MRAL-MILO rear AlignaLinks are the same ones used between
individual MILO cabinets in a MILO array. Always use all three pins in the triangular front AlignaLink,
just as you would when connecting MILO cabinets together.
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T: +1 510 486.1166
F: +1 510 486.8356
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mg-3d/m multipurpose grid and accessories
mg-3d/m grid and milo rear flown configuration
The MG-3D/M multipurpose grid allows you to fly MILO loudspeakers in two positions in relation to the MG-3D/M grid.
The “rear flown” position is achieved by rigging MILO loudspeakers using the holes for the AlignaLinks that are closer
to the rear of the MG-3D/M grid. This position is most useful for achieving superior up tilt in the MG-3D/M grid and,
subsequently, the array. Under the same circumstances (number of loudspeakers, angle between loudspeakers, rating
and position of motors) the rear configuration will allow more degrees of up tilt than a "front flown" configuration.
In flown configurations, the first cabinet in the array is always connected to the MG-3D/M grid at 0°. This is
accomplished by using the top center hole in the rear AlignaLink (when used between cabinets, it is the 1° hole) which
effectively provides a 0° tilt angle. In addition to the splay angles of individual MILO loudspeakers in an array, the up
and down tilt of the MG-3D/M grid and the complete array hung underneath can additionally be adjusted using chain
motors, or differing lengths of steel cables or chains.
caution: Out of the MRAL-MILO rear AlignaLink’s nine holes, you must use the top center hole
between the MG-3D/M grid and the first MILO loudspeaker in a flown configuration to ensure a 0° splay
angle between the MG-3D/M and the first MILO. Any other confinguration is not rated, and may produce an
unpredictable tilt angle and/or cause damage to the link and MG-3D/M grid.
Install the MRAL-MILO rear AlignaLinks and MFAL-MILO front AlignaLinks as shown into the MG-3D/M grid, using the
3/8" x 1.5" quick release pins (QRPs).
caution: The leveling feet must always
be detached from the MG-3D/M grid before
flying a system. Unscrew the entire assembly,
including the threaded leg, and remove completely.
caution:
Make sure
that the long 1.5"
QRPs are used
to secure the
AlignaLinks to the
MG-3D/M grid and
that the QRPs lock
into place.
caution: Never exceed the load rating of the MG-3D/M grid. when flying an array from the MG-3D/M
grid, it must always be supported by at least two pick-up holes, one on each side of the grid frame. See
“MILO System Load Ratings and Pickup Configurations” earlier in this chapter for more details.
Meyer Sound Laboratories Inc.
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F: +1 510 486.8356
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mg-3d/m multipurpose grid and accessories
mg-3d/m grid and milo front flown configuration
The MG-3D/M multipurpose grid allows you to fly MILO loudspeakers in two positions in relation to the grid. The "front
flown" position is achieved by rigging MILO loudspeakers using the holes for the AlignaLinks that are closer to the
front of the grid. This position is most useful for achieving superior down tilt in the MG-3D/M grid and, subsequently,
the array. Under the same circumstances (number of loudspeakers, angle between loudspeakers, rating and position
of motors) the front flown position will allow more degrees of down tilt than a "rear flown" configuration.
In flown configurations, the first cabinet is connected to the MG-3D/M grid at 0°. This is accomplished by using the top
center hole in the MRAL-MILO rear AlignaLink (when used between cabinets, it is the 1° hole), which effectively provides
a 0° tilt angle. In addition to the splay angles of individual loudspeakers in an array, the up and down tilt of the MG-3D/M
grid and the array hung underneath can additionally be adjusted using chain motors, or differing lengths of steel cables or
chains. If a severe down tilt is needed, use the array rigging calculator to determine if the PBF-MILO pull back frame and
a separate motor are required. Visit www.meyersound.com/arraycalculator to find out how to download the calculator.
note: To install a large array requiring severe vertical splay angles between cabinets, it’s useful to
temporarily introduce up tilt to the MG-3D/M grid as you connect individual cabinets to each other.
Depending on the application, a “rear flown” position may make more sense in this case.
caution: Out of the MRAL-MILO rear AlignaLink’s nine holes, you must use the top center hole
between the MG-3D/M grid and the first MILO loudspeaker in a flown configuration to ensure a 0° splay
angle between the MG-3D/M and the first MILO. Doing otherwise may force the hardware into an unnatural
position, which may produce an unpredictable tilt angle and/or cause damage to the link and MG-3D/M grid.
Install the MRAL-MILO rear and MFAL-MILO front AlignaLinks as shown into the MG-3D/M grid, using the 3/8" x 1.5"
quick release pins (QRPs).
caution:
The leveling
feet must always
be detached from
the MG-3D/M grid
before flying a
system. Unscrew
the entire assembly,
including the
threaded leg, and
remove completely.
caution: Be sure to use the long 1.5" QRPs to secure the AlignaLinks to the MG-3D/M grid and that
the QRPs lock into place.
caution: Never exceed the load rating of the MG-3D/M grid. when flying an array from the MG-3D/M,
it must always be supported by at least two pick-up holes, one of each side of the grid frame. See “MILO
System Load Ratings and Pickup Configurations” earlier in this chapter for more details.
Meyer Sound Laboratories Inc.
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mg-3d/m multipurpose grid and accessories
milo ground-supported configurations
By simply flipping the MG-3D/M multipurpose grid over from its flown configuration and installing the levelling feet,
the MG-3D/M grid can be used to provide ground support for a MILO array. The MG-3D/M grid provides two positions
— front and rear. Either position may be used to stack MILO loudspeakers, although the front position is most useful for
stacking a predominantly up tilted MILO array. In ground-supported configurations, MFAL-MILO front AlignaLinks and
MRAL-MILO rear AlignaLinks connect the MG-3D/M grid to the first MILO with the same vertical orientation used as if
the MG-3D/M were simply another MILO cabinet, providing from –1° to 4° up tilt between the MG-3D/M grid and the
first loudspeaker when using a MILO loudspeaker as the first element of the array.
note: The angles engraved on a MILO rigging frame guide you when setting the splay angles between
MILO cabinets. To set the angle between the MG-3D/M grid and the first MILO in your ground-
supported array, the actual angle is the engraved angle minus 1°. For example, if you set the angle to the 5°
hole, the actual angle between the MG-3D/M grid and the MILO will be 4° of up tilt.
Install the MFAL-MILO front and MRAL-MILO rear AlignaLinks as shown into the MG-3D/M grid, using the 3/8" x 1.5"
quick release pins (QRPs).
caution: For safety
reasons, ground-supported
arrays of more than six MILO
loudspeakers using the MG-3D/M
grid should be avoided. Larger
stacks can be unstable, especially
in windy conditions and on uneven
ground.
caution: when ground supporting a MILO array on an MG-3D/M grid, always keep the center of
gravity within the footprint of the leveling feet. To further secure larger arrays – particularly in outdoor
situations – use tie down straps or extra ballast weight on the MG-3D/M grid.
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mg-3d/m multipurpose grid and accessories
3. using m3d/m3d-sub witH tHe mg-3d/m grid
m3d system load ratings and pickup configurations
using one or both center pickup points
Figure 3.1. 2 to 2 center point configuration
Figure 2.2. 2 to 1 center point configuration
Figure 3.3. 3 to 2 center/corner point configuration
Figure 3.4. 3 to 2 corner/center point configuration
max. suspended weight and Quantity of m3d loudspeakers, using center pickup points
Grid Tilt
in Degrees
Min. Bridle
Leg Length
5:1 Safety Factor
7:1 Safety Factor
Max. weight Max. Quantity Max. weight Max. Quantity
0 to 45
3 ft
(915 mm)
4700 lbs
(2131 kg)
10 (see note 1
on page 18)
3350 lbs
(1520 kg)
7 (see note 1
on page 18)
+45 Not Allowed
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mg-3d/m multipurpose grid and accessories
m3d system load ratings and pickup configurations
using all four corner pickup points
Figure 3.5. 4 to 2 corner point configuration
Figure 3.6. 4 to 4 corner point configuration1
Figure 3.7. 4 to 2 corner cross point configuration
Figure 3.8. 4 to 1 corner point configuration2
max. suspended weight and Quantity of m3d loudspeakers, using corner pickup points
Grid Tilt
in Degrees
Min. Bridle
Leg Length
5:1 Safety Factor
7:1 Safety Factor
Max. weight Max. Quantity Max. weight Max. Quantity
0 to 45
3 ft (915 mm)2
6000 lbs
(2722 kg)
13 (see note 2
on page 18)
5250 lbs
(2381 kg)
11 (see note 2
on page 18)
+45 Not Allowed
1
2
Please note that the bridle legs are not required in this configuration; the motors can be connected directly to
the MG-3D/M grid using shackles.
The minimum bridle leg length for the 4 to 1 corner point configuration is 4 ft (1219 mm).
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mg-3d/m multipurpose grid and accessories
note 1: For center point configurations, up to 14 M3D loudspeakers with a 5:1 safety factor or 10 M3D
loudspeakers with a 7:1 safety factor can be flown only under the following conditions:
Monitoring of the stress load on the two rigging points is done with load cells between the hoist and
the MG-3D/M multipurpose grid, so that either the front or back pickup point used to hang the MG-
3D/M does not exceed 4700 lbs (2131 kg) at 5:1 or 3350 lbs (1520 kg) at 7:1 on the center pick-up
hole.
The total load must be calculated so that it is spread between the front and back points at the final
array position (grid angle and accumulative splay angle of the system) and does not exceed the
above stated weights on either the front or rear point.
The MG-3D/M grid plus 14 M3D loudspeakers weighs approximately 6000 lbs (2721.55 kg). As long as
that total weight is split between the front and rear points so that neither point supports more than 4700
lbs (2131 kg) at 5:1 or 3350 lbs (1520 kg) at 7:1, the safety factors are maintained.
note 2: For corner point configurations, up to 16 M3D loudspeakers at a safety factor of 5:1 and 7:1
can be flown only under the following conditions:
Monitoring of the stress load on the four rigging points is done with load cells between the hoist
and the MG-3D/M multipurpose grid, so that either the front or back set of points used to hang the
MG-3D/M grid do not exceed the total weight load of 6000 lbs (2721.55 kg) at 5:1 or 5250 pounds
(2381.36 kg) at 7:1.
The total load must be calculated so that it is spread between the front and back points at the final
array position (grid angle and cumulative splay angle of the system) and does not exceed the above
stated weights on either the front or rear set of points.
The MG-3D/M grid plus 16 M3D loudspeakers weighs approximately 7000 lbs (3175.15 kg). As long that
total weight is split between the front and rear set of points so that neither set supports more than 6000
lbs (2721.55 kg) at 5:1 or 5250 pounds (2381.36 kg) at 7:1, the safety factors are maintained.
note: Use the Meyer Sound array rigging calculator to compute center-of-gravity data and load
caution: This calculator has been found to match actual load cell measurements to within 16% of the
total weight of the array, and within 3.5 degrees of top grid angle.
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mg-3d/m multipurpose grid and accessories
mlk-3d link kit
The MLK-3D link kit is required to attach an M3D/M3D-Sub to the MG-3D/M multipurpose grid.
In flown configurations, the first M3D/M3D-Sub cabinet in the array is always connected to the MG-3D/M grid at 0°. In
ground-supported configurations, the first M3D/M3D-Sub cabinet in the array can have from 0° to 5° with respect to
the MG-3D/M grid. In both flown and ground-supported configurations, M3D/M3D-Sub cabinets may be individually
splayed from 0° to 5° through the selection of pin positions in accordance with your system design. The up and down
tilt of the MG-3D/M grid and the complete array hung underneath can additionally be adjusted using chain motors, or
differing lengths of steel cables or chain lengths.
caution: Always use two quick release pins (QRPs) to secure the front MTL-3D transition links to the
MG-3D/M grid.
Labels on the left and right sides of the MG-3D/M grid denote the correct orientation of the grid for a flown or ground-
supported configuration, as well as the front and rear positions for both MILO and M3D/M3D-Sub loudspeakers. In
addition, please note that:
The orientation of the MG-3D/M grid for a ground-supported configuration is a 180° (flipped) rotation from the
flown position.
For M3D/M3D-Subs, the front side of the MG-3D/M grid is opposite the side used for flying MILO loudspeakers.
list of contents: mlk-3d link kit (part 40.132.120.01)
Required for use with M3D/M3D-Sub loudspeaker(s)
Qty part number
description
2
6
61.132.115.02
134.007
MTL-3D Transition Link
1/2" x 2.5" QRP*
*Includes lanyard and necessary hardware
to fix the pin to the MG-3D/M
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mg-3d/m multipurpose grid and accessories
mg-3d/m grid and m3d/m3d-sub rear flown configuration
The MG-3D/M multipurpose grid allows you to fly M3D/M3D-Sub loudspeakers in two positions with respect to the
grid. The “rear flown” position is achieved by rigging M3D/M3D-Sub loudspeakers using the holes for the captive links
that are closer to the rear of the MG-3D/M. The rear flown position is highly useful for achieving superior up tilt in the
MG-3D/M grid and, subsequently, the array. Under the same circumstances (number of loudspeakers, angle between
loudspeakers, rating and position of motors) the rear configuration will allow more degrees of up tilt than the front
configuration.
In flown configurations, the first M3D/M3D-Sub in the array is always connected to the MG-3D/M grid at 0°. This is ac-
complished by using the captive rear link of the M3D/M3D-Sub in the rear and the MTL-3D transition link in the front.
caution: A grid tilt greater than 45° is not allowed when flying M3D/M3D-Subs using the MG-3D/M
grid.
Install the MTL-3D transition links and M3D captive rear links as shown into the MG-3D/M grid, using the 1/2" x 2.5"
quick release pins (QRPs).
caution: The leveling feet must
always be detached from the MG-
3D/M grid before flying a system. Unscrew
the entire assembly, including the threaded
leg, and remove completely.
caution: Always
use two 1/2" M3D
QRPs to secure the MTL-
3D transition links and
one to secure the captive
rear links to the MG-3D/M
grid, and be sure to lock
them into place. Do not
use the MILO 3/8" QRPs.
caution: Never exceed the load rating of the MG-3D/M grid. when flying an array from the MG-3D/M
grid, it must always be supported by at least two pick-up holes, one of each side of the grid frame. See
the section “M3D System Load Ratings and Pickup Configurations” earlier in this guide for more details.
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mg-3d/m multipurpose grid and accessories
mg-3d/m grid and m3d/m3d-sub front flown configuration
The MG-3D/M multipurpose grid allows you to fly M3D/M3D-Sub loudspeakers in two positions in relation to the
MG-3D/M grid. The “front flown” position is achieved by rigging M3D loudspeakers using the holes for the MTL-3D
transition links that are closer to the front of the MG-3D/M grid. This position is useful for achieving optimum down tilt
of the MG-3D/M grid and, subsequently, the array. Under the same circumstances (number of loudspeakers, angle
between loudspeakers, rating and position of motors) the front flown position will allow a larger down tilt than a rear
configuration.
In flown configurations, the first M3D/M3D-Sub cabinet in the array is always connected to the MG-3D/M grid at 0°.
This is accomplished by using the captive rear link of the M3D/M3D-Sub in the rear and the MTL-3D link in the front.
note: To install a large array requiring severe vertical splay angles between cabinets, it’s useful to
temporarily introduce up tilt to the MG-3D/M grid as you connect individual cabinets to each other.
Depending on the application, a “rear flown” position may make more sense in this case.
caution: A grid tilt greater than 45° is not allowed when flying M3D/M3D-Subs using the MG-3D/M
grid.
Install the MTL-3D transition links and M3D captive rear links as shown into the MG-3D/M grid, using the 1/2" x 2.5"
quick release pins (QRPs).
caution: Always
use two 1/2" M3D
QRPs to secure the MTL-
3D transition links and one
to secure the captive rear
links to the MG-3D/M grid,
and be sure to lock them
into place. Do not use the
MILO 3/8" QRPs.
caution: The leveling feet must always be detached from the MG-3D/M grid before flying a system.
Unscrew the entire assembly, including the threaded leg, and remove completely.
caution: Never exceed the load rating of the MG-3D/M grid. when flying an array from the MG-3D/M
grid, it must always be supported by at least two pick-up holes, one of each side of the grid frame. See
the section “M3D System Load Ratings and Pickup Configurations” earlier in this guide for more details.
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mg-3d/m multipurpose grid and accessories
m3d/m3d-sub ground-supported configurations
By simply flipping the MG-3D/M multipurpose grid over from its flown configuration, it can be used to provide ground
support for an M3D/M3D-Sub array. The MG-3D/M grid provides two positions — front and rear. Either position may
be used to stack M3D loudspeakers, although the front position is most useful for stacking a predominantly up tilted
M3D array. In a ground-supported configuration, the MTL-3D transition link becomes the rear link between the MG-
3D/M grid and the first M3D/M3D-Sub cabinet. The captive front CamLink is used between the first M3D/M3D-Sub
cabinet and the MG-3D/M grid, providing up to a full 5° of up tilt.
caution: For safety reasons, ground-supported arrays of more than six M3D/M3D-Sub loudspeakers
using the MG-3D/M grid should be avoided. Larger stacks can become unstable.
Install the MTL-3D transition links and M3D/M3D-Sub captive rear links as shown into the MG-3D/M grid, using the
1/2" x 2.5" quick release pins (QRPs).
caution: Always
use two 1/2" M3D
QRPs to secure the MTL-
3D transition links and
one to secure the captive
rear links to the MG-3D/M
grid, and be sure to lock
them into place. Do not
use the MILO 3/8" QRPs.
caution: when ground supporting an M3D/M3D-Sub array on an MG-3D/M grid, always keep the
center of gravity within the footprint of the leveling feet. To further secure larger arrays — particularly in
outdoor situations — use a tie down or extra ballast weight on the grid.
Meyer Sound Laboratories Inc.
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mg-3d/m multipurpose grid and accessories
4: transitions and accessories
when used with other Meyer Sound transition kits, the MG-3D/M multipurpose grid can support a variety of flown and
ground-supported configurations using MILO, M3D/M3D-Sub, and other M Series loudspeakers.
mtr-3d/m transition rail kit: m3d/m3d-sub to milo
Meyer Sound’s MTR-3D/M transition rail kit allows you to easily transition from an M3D/M3D-Sub to a MILO loudspeak-
er or from a MILO to M3D/M3D-Sub. MTR-3D/M transition rails provide the link needed to attach MILO quickly either
above or below M3D/M3D-Subs as required. The kit also contains all the links and quick release pins (QRPs) necessary
for the transition in either direction.
In flown configurations where the M3D/M3D-Sub is above the MILO loudspeaker, the MATB-3D adjustable transition
bar allows the transition rails to be tilted at 0°, 6° and 12° with respect to the M3D/M3D-Sub(s) above it. The MRAL-
MILO rear AlignaLink also allows MILO to be tilted from 0° to -5° in relation to the transition rails, giving a combined
range from -5° to 12° between the M3D/M3D-Sub and MILO cabinets.
list of contents: mtr-3d/m transition kit (part 40.132.110.01)
note: The approxi-
Qty part number
description
mate total weight of the
MTR-3D transition kit is 42.8
lbs (19.41 kg).
a
b
c
d
e
2
MTR-3D/M Transition Rails
1/2" x 2.5" QRP
4
2
2
2
134.007
134.021
3/8" x 1.125" QRP
61.132.028.01
61.132.115.01
MRAL-MILO Rear AlignaLink
MATB-3D Adjustable Transition Bar
caution: Always
use two 1/2" M3D
QRPs to secure the MATB-
3D transition bar to the
MTR-3D/M transition rail.
Do not use the MILO 3/8"
QRPs.
e
b
c
a
d
caution: when
using combined
arrays, the total weight of
the array should be always
be calculated and be within
specifications before flying
the array. Do not exceed the
MG-3D/M grid load ratings
listed in Chapters 2 and 3 of
this guide.
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mg-3d/m multipurpose grid and accessories
The MTR-3D/M transition rail kit can be reversed and used in flown or ground-supported configurations where an
M3D/M3D-Sub is underneath a MILO loudspeaker. In this configuration the MATB-3D adjustable transition bar al-
lows the transition rails to be tilted at 0°, 6° to 12° with respect to the M3D/M3D-Sub(s) below. The MRAL-MILO rear
AlignaLinks also allows MILO to be tilted from 0° to 5° in relation to the transition rails, giving a combined range from
0° to 17° between the M3D/M3D-Sub and MILO cabinets.
caution: when ground
supporting an M3D/M3D-
Sub array on an MG-3D/M grid,
always keep the center of gravity
within the footprint of the leveling
feet. To further secure larger arrays
— particularly in outdoor situations
— use tie down straps or extra
weight on the grid.
caution: Always use two
1/2" M3D QRPs to secure the
MATB-3D adjustable transition bar
to the MTR-3D/M transition rail. Do
not use the MILO 3/8" QRPs.
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mg-3d/m multipurpose grid and accessories
mtb-2d/m transition bar kit: milo to m2d
The combination of the MTB-2D/M transition bar kit and MG-2D multipurpose grid allows you to easily transition from
MILO to M2D loudspeakers. MTB-2D/M transition bars provide the link needed to attach an MG-2D grid below a MILO
loudspeaker; a downfill array of M2Ds can then be flown from the MG-2D as required using the full capabilities and
flexibility of the MG-2D grid. The MTB-2D/M kit contains the bars and quick release pins (QRPs) necessary for the
transition between MILO and the MG-2D grid.
For more information on the MG-2D grid, please consult Meyer Sound’s “MG-2D Assembly Guide.”
list of contents: mtb-2d/m transition kit (part 40.132.033.01)
note: The approxi-
Qty part number
description
mate combined weight
of the MTB-2D/M and the MG-
2D grid is 242 lbs (109.77 kg)
The M2D loudspeaker weighs
114 lbs (52.62 kg).
a
b
2
MTB-2D/M Transition Bar
1/2" x 2.5" QRP
4
134.007
a
b
caution: when using combined arrays, the total weight of the array should always be calculated and
be within specifications before flying the array. Do not exceed the MG-3D/M grid load ratings listed in
Chapters 2 and 3 of this guide.
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mg-3d/m multipurpose grid and accessories
mtk-2d transition kit: m3d/m3d-sub to m2d
Using Meyer Sound’s MTK-2D transition kit, the MG-2D multipurpose grid can be attached underneath an M3D/M3D-
Sub cabinet. A downfill array of M2D loudspeakers can then be flown from the MG-2D grid as required using the full
capabilities and flexibility of the MG-2D grid. The MTK-2D kit contains the links and pins necessary for the transition
between an M3D/M3D-Sub loudspeaker and the MG-2D grid.
For more information on the MTK-2D transition kit and the MG-2D grid, please consult Meyer Sound’s “MG-2D
Assembly Guide.”
list of contents: mtk-2d transition link kit (part 40.112.058.01)
note: The approximate
Qty part number
description
combined weight of the
MTK-2D transition kit and the
MG-2D grid is 227 lbs (102.97
kg). The M2D loudspeaker
weighs 114 lbs (52.62 kg).
a
b
2
4
61.112.029.01
134.007
MG-2D Transition Link
1/2" x 2.5" Quick Release Pin (QRP)
a
b
caution: when using combined arrays, the total weight of the array should always be calculated and
be within specifications before flying the array. Do not exceed the MG-3D/M grid's load ratings listed in
Chapters 2 and 3 of this assembly guide.
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mg-3d/m multipurpose grid and accessories
pbf-milo pull-back frame
The up and down tilt of the MG-3D/M multipurpose grid and the complete MILO array hung underneath can be ad-
justed using chain motors, or differing lengths of steel cables or chain lengths. The rigging connections between MILO
loudspeakers using the MFAL-MILO front AlignaLinks and MRAL-MILO rear AlignaLinks are rigid, and in most applica-
tions array tilt can be achieved by adjusting the angle of the MG-3D/M grid. For applications where you need an ex-
treme tilt and motor adjustments alone are not enough, the PBF-MILO pull-back frame can be attached to the lowest
MILO cabinet in the array. The MTB-2D/M kit and an extra motor or lifting device are required for this configuration.
list of contents: pbf-milo pull-back frame (40.132.034.01)
note: The approxi-
Qty part number
40.132.034.01
description
mate combined weight
of the PBF-MILO pull-back
frame and MTB-2D transition
kit is 42 lbs (19.41 kg).
a
1
PBF-MILO Pull-Back Frame
a
caution: when using the PBF-MILO pull-back frame, the total weight of the array should always be
calculated and be within specifications before flying the array. Do not exceed the MTG-3D/M grid load
ratings listed in Chapters 2 and 3 of this guide.
note: If a severe up tilt is needed, the MTB-2D bars can be reversed, allowing you to install the PBF-
MILO pull-back frame to the front of the array.
note: Use the array rigging calculator to compute load and center-of-gravity data. Visit www.
meyersound.com/arraycalculator to find out how to download the calculator.
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mg-3d/m multipurpose grid and accessories
mve-milo vertical extension bars
In a MILO array, MFAL-MILO front and MRAL-MILO rear AlignaLinks at the cabinet corners couple the units for either
flying or stacking, and allow nine positions from 0° to 5° of cabinet splay (0°, .5°, 1°, 1.5°, 2°, 2.5°, 3°, 4°, 5°). For ap-
plications where the desired splay angle is greater than the full 5° capability of the MRAL-MILO rear AlignaLinks, the
MVE-MILO vertical extension bars can help.
tip: The MVE-MILO vertical extension bars are most useful when you need to minimize high-frequency
reflections in a specific area – such as a balcony face in a theatre or glass in an arena – in your MILO
array’s vertical coverage. By increasing the angle between the two loudspeakers aimed at the surface you
need to miss, you reduce the amount of sound reflected from that surface, and maximize other areas requiring
coverage.
The two MVE-MILO extension bars replace the triangular MFAL-MILO front AlignaLinks on the upper cabinet where
the extended angle is required. Using the MVE-MILO bars, you can extend the splay angle between loudspeakers by
an additional 3°, 6° or 9°. This effectively provides up to 12° (3° maximum of the MRAL-MILO rear AlignaLinks plus 9°
maximum of the MVE-MILO) splay angle. Note that on the MRAL-MILO, 4° and 5° are not used.
note: The same quick release pins (3/8" x 1.125") used for the MFAL-MILO front AlignaLink are used
with the MVE-MILO vertical extension bars. MVE-MILO can be stored the same way as the MFAL-
MILO and can be used to secure a cabinet to the MCF-MILO caster frame.
note: Using too many MVE-MILO bars in a single array may create excessive splay angles, severely
degrading array behavior and directionality.
list of contents: mve-milo vertical extension bars (40.132.130.01)
Qty part number
description
a
2
61.132.037.02
MVE-MILO Vertical Extension Bar
a
caution: when using the MVE-MILO extension bars, the total weight of the array should be always
be calculated and be within specifications before flying an array. Do not exceed the MG-3D/M grid load
ratings listed in Chapters 2 and 3 of this guide.
Meyer Sound Laboratories Inc.
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mg-3d/m multipurpose grid and accessories
mcf-milo caster frame kit
The MCF-MILO caster frame allows you to transport stacks of up to four entire MILO loudspeakers high. whether
you’re deploying and striking a MILO array, the MCF-MILO frame can also support the weight of the array — making
the array easy to assemble or dissemble by using blocks of up to four MILO loudspeakers. you may use any of first
three the top holes in the MRAL-MILO real AlignaLink to attach the MCF-MILO. Use the 1° position to achieve a 0°
angle between the MCF-MILO frame and the MILO loudspeaker above it. The MCF-MILO's rugged steel frame means
you can forklift it; a range of protective transport covers is also available.
caution: Do not exceed four MILO loudspeakers high on a block to avoid tipping over the stack.
caution: Avoid blocks of four with pronounced angles. Always try to keep the center of gravity as
close as possible to the center of the caster frame to avoid tipping over the stack. Use the first hole in
the top row (0° position) on the MRAL-MILO to move the center of gravity forward on a block with angles.
tip: you can transport the MG-3D/M grid attached to the top MILO on a block.
list of contents: mcf-milo caster frame kit (40.132.039.01)
Qty part number
description
a
b
1
MCF-MILO Caster Frame
4
134.023
3/8" x 1.5" Quick Release Pin (QRP)*
*Includes hardware to fix the lanyard to the MCF-MILO
caution: For safety reasons, do
not leave the caster frame attached
to the last MILO loudspeaker when flying
an array of MILO loudspeakers.
caution: when
lifting a block with
a forklift, always keep the
forks wide – close to the
MCF-MILO caster frame’s
wheels. Doing otherwise (for
b
example, moving the forks
together in the center) may
bend the frame.
a
tip: If you are transporting the MG-3D/M attached to the top MILO on a block and additional height is
needed to avoid colliding with other MILO stacks, use the optional MILO wheel frame extension kit (part
number 40.132.150.01) to raise the level of the stack by 1 inch.
Meyer Sound Laboratories Inc.
T: +1 510 486.1166
F: +1 510 486.8356
PN: 05.132.036.01 B2
Page 29 of 32
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mg-3d/m multipurpose grid and accessories
Meyer Sound Laboratories Inc.
T: +1 510 486.1166
F: +1 510 486.8356
PN: 05.132.036.01 B2
Page 30 of 32
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Meyer Sound Laboratories Inc.
2832 San Pablo Avenue
Berkeley, CA 94702
© 2007
Meyer Sound Laboratories Inc.
PN: 05.132.036.01 B2
T: +1 510 486.1166
F: +1 510 486.8356
Download from Www.Somanuals.com. All Manuals Search And Download.
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