Electro-Voice® Sx/Sb-Series 12” Systems Rigging Manual
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The Mb Kits
Electro-Voice® manufactures three accessories to make the sus-
pension of Sx/Sb-Series enclosures safe, easy and cost-effective:
the Mb100 Eyebolt Attachment Kit, the Mb200 Installation Kit and
the Mb300 Horizontal Array Kit. This instruction sheet gives a brief
overview of how each of these suspension kits could be used so the
correct kit can be selected. In addition, each of the suspension kits
includes a separate instruction sheet with complete dimensions and
full details for use.
Suspending Sx/Sb-Series Enclosures
The molded enclosures used in Sx/Sb-Series are lightweight and
structurally sound. Each enclosure has four metric M8 x 1.25 metal
inserts molded into the enclosure to aid in suspension and aiming.
A single insert, correctly used, will safely suspend the weight of one
enclosure with a safety factor in excess of 5 to 1. It will not support
additional weight with a sufficient safety factor for overhead lifting. If
multiple Sx/Sb-Series enclosures are suspended, Mb200 Installation
Kits must be used to support and aim each enclosure.
Mb100 Eyebolt Attachment Kit
The Mb100 Eyebolt Attachment Kit is intended for very simple instal-
lations only, to suspend an individual Sx/Sb-Series loudspeaker in a
near-vertical orientation (see Figure 1). A second, redundant insert
point is provided in the top of the enclosure so a supplementary
independent means of suspension can be attached when regulations
specify. The enclosure can be positioned to angle downward slightly
through the use of the pull-up point at the back of the enclosure.
Note that two top suspension cables should be used at all times to
provide needed stability to the installation (see Figure 1).
Do not suspend Sx/Sb-Series enclosures face down from
the ceiling using the Mb100 Eyebolt Attachment Kit.
The M8
eyebolts are not rated for lifting loads at 90°, and such a configuration
makes stabilization of the enclosure difficult. Instead, use the Mb200
Installation Kit for this and most other situations (see the Mb200
Installation Kit section).
Mb200 Installation Kit
The Mb200 Installation Kit provides a cost-effective and safe means
of attaching Sx/Sb-Series loudspeakers to walls or suspending them
overhead (see Figure 2). The kit contains a large, reinforced-steel
bracket with a selection of thru-holes which allow the bracket to be
mounted to different surfaces in a range of orientations. This kit is rec-
ommended for most installations, and is essential when arraying Sx/
Sb-Series loudspeakers.
The Mb200 U-bracket extends from top to bottom of the Sx/Sb-Se-
ries loudspeaker and attaches at both ends. This securely “captures”
the enclosure, allowing further loudspeaker systems to be added
without increasing the stress on the first enclosure. It also allows the
loudspeaker to be aimed in the desired direction and locked in place.
For even greater flexibility, three-hole-pattern groups compatible with
the OmniMount® 60.0 (originally Series 100)
1
support system have
also been incorporated into the Mb200 Installation Kit's U-bracket
(see Figure 2B, reference A).
Vertical arrays can be constructed by "daisy chaining" Mb200's to-
gether (see Figure 3). To achieve a slight downward angle, attach an
additional cable to the lower Mb200 and use this cable to pull up the
array, securing the cable at the desired angle and position.
No more than two enclosures should be suspended in a vertical array
in this manner. If a taller array is required, you should provide a means
of independent suspension for the remaining enclosures.
Again, note the use of two top suspension cables (see Figure 3)
which provide stability and should be used at all times.
WARNING: Suspending any object is potentially dangerous and should only be attempted by individuals who have a thorough knowledge
of the techniques and regulations of rigging objects overhead. Electro-Voice strongly recommends that the Sx/Sb-Series enclosures be sus-
pended taking into account all current national, federal, state and local regulations. It is the responsibility of the installer to ensure the loud-
speaker is safely installed and in compliance with all regulations. If the loudspeaker is suspended, Electro-Voice strongly recommends that the
system be inspected at least once a year. If any sign of weakness or damage is detected, remedial action should be taken immediately.
Horizontal Array
Number of Enclosures
in Array:
Number of Kits Required
Mb200
Mb300
2
2
1
3
3
2
4
4
3
5
5
4
6
(Complete Circle)
6
6
Each Mb300 Horizontal Array Kit consists of two connector brackets
(one top, one bottom) plus the hardware required to join these brack-
ets to the U-brackets from two Mb200 Installation Kits. This combina-
tion of one Mb300 Horizontal Array Kit plus two Mb200 Installation
Kits forms a solid frame suitable for suspending two Sx/Sb-Series
loudspeakers in a horizontal array (see Figure 4). Holes are provided
in the Mb300 brackets for attaching cables for suspension.
Two mounting angles, 50° and 60°, are possible using the Mb300
Horizontal Array Kit. Use of the 50° angle results in a tight array with
speaker sides touching (see Figure 5); use of the wider orientation
results in improved coverage for multiple loudspeakers and allows
construction of a complete, 360° array (see Figure 6 for diagram of
one half of a 360° array). A vertical array can also be constructed
using the Mb300 Horizontal Array Kit, but relatively few aiming angles
are available.
1. OmniMount® is a registered trademark of OmniMount Systems, Inc.
For more information, visit
www.omnimountpro.com
NOTE: The Mb200 mounting brackets will not work
with powered (amplified) versions of the Sx/Sb-Series.
Flush-mounted input panels (as opposed to recessed
input panels on passive versions) cause the U-bracket
to interfere with cables connected to the rear of the
loudspeaker.
Mb300 Horizontal Array Kit
The Mb300 Horizontal Array Kit must be used in conjunction with the
Mb200 Installation Kit. Select the required number of kits from the
chart below:
