Electro-Voice MB100 - Manual

The M
b
100 Eye-Bolt Attachment Kit contains
three lifting eye-bolts which screw into the in-
serts provided on the System 200
TM speakers.
The eyebolt attachment points can then be used
to suspend the System 200
TM speakers using
hardware rated for overhead lifting.
Note that two top suspension cables should be
used at all times to provide needed stability to
the installation (see Figure 4).
Do not suspend System 200 TM enclosures
face down from the ceiling using the M
b
100
Eyebolt Attachment Kit. The M8 eyebolts are
not rated for lifting loads at 90°, and such a
configuration makes stabilization of the enclo-
sure difficult. Instead, use the M
b
200 Installa-
tion Kit for this and most other situations.
HANGING INSTRUCTIONS
The speaker is hung using one or two main
lifting “chains” with a pull-up point in the back for
aiming. Two lifting chains can be used to pre-
vent the speaker from swaying, but both of the
rigging hardware (shackles, etc.) must fit through
the 20-mm (
3 / 4 -in.) opening.
INSTALLATION INSTRUCTIONS
(see Figure 1)
1. From the speaker, remove the plastic hole
plugs, gently prying them with a small screw
driver.
SPECIFICATIONS:
Eye Bolts:
M8 x 1.25 x 13 mm—eye diameter:
20 mm (
3 / 4 in.)
Material:
Drop forged steel, black nickel plated
Net Weight:
0.2 kg (0.44 lb)
Shipping Weight:
0.3 kg (0.60 lb)
CAUTION:
Suspending any object is potentially dan-
gerous and should be attempted only by
individuals who have a thorough knowl-
edge of the techniques and regulations of
rigging objects overhead. Electro-Voice
sanctions suspending the System 200
TM
speakers only when all current national,
federal, state and local regulations are taken
into account. When the System 200
TM
speaker is suspended, Electro-Voice
strongly recommends that the system be
inspected at least once a year. If any sign of
weakness is detected, corrective action
should be taken immediately.
DESCRIPTION
The M
b
100 is intended for very simple installa-
tions only, to suspend an individual S
x
100,
S
b
120 or S
x
200 loudspeaker in a near-vertical
orientation (see Figure 1). 2 A second, redun-
dant 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 po-
sitioned to angle downward slightly through the
use of the pull-up point at the back of the
enclosure.
Eye-Bolt Attachment Kit
• Mounting kit for System 200 TM
speakers: S
x
100, S
x
200 and S
b
120 1
• Provides three attachment points for
secure suspension of a single
speaker cabinet
2. Screw the eye bolt into the insert until the
shoulder has contacted the plastic.
3. Finger tighten eye bolt until correct align-
ment position is obtained, a maximum of
one-half turn (see Figure 2).
CAUTION: OVER TIGHTENING THE EYE
BOLT WITH A WRENCH, SCREW
DRIVER, etc. CAN RESULT IN SYSTEM
FAILURE AND INJURY.
4. Use certified hardware rated for overhead
lifting to suspend the speaker (see Figure 3).
STRENGTH RATING
The M
b
100 Eye-Bolt Attachment Kit and the
System TM 200 speaker enclosure are rated for
suspending only one speaker (5:1 safety fac-
tor). Hanging any additional weight from the
speaker will exceed its strength rating and
create an unsafe condition. Table 2 lists the
strength ratings for the M8 eye bolts. The eye
bolts are not rated for angles greater than
45 degrees (see Figure 2). An exception to this
would be the eye bolt which is used for speaker
aiming and not for a main load-bearing point;
the angle on that eye bolt can exceed
45 degrees.
FIGURE 1 — Eye Bolt Installation
TABLE 1 — Contents
Reference Letter EV Part No. Quantity Description
A 20592 3 M8x 1.25 x 13 mm lifting eye bolt _________________
2. The M b 100 Eyebolt Attachment Kit is not recommended
for suspension of active systems such as the S b 120a.
___________________
1. At time of publication, only these models were available
in the System 200 TM series, but additional models are
planned. The general concepts and instructions given
here should remain applicable for later models.