Bose Professional MB210 Guide D'installation page 10

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Installation
Mounting Loudspeaker with U-Bracket
Before You Begin - Recommended Tools
• 10 mm sockets and socket wrenches - for M8 bolts on U-bracket
• T3 square drive (included) - for removing plastic inserts.
CAUTION:
• The loudspeaker weighs 21.8 kg (48 lbs) with U-bracket attached. Use caution when lifting to avoid injury and/or
damage to the speaker.
• Do not place loudspeaker resting on its grille.
• Bose does not recommend or support use of eyebolts in threaded holes instead of U-bracket.
Install Loudspeaker Using U-Bracket
1.
Choose a mounting location that will safely support the weight of the loudspeaker. The loudspeaker can be
mounted horizontally or vertically.
2.
Remove packing materials and place the loudspeaker on the floor beneath the planned suspension point.
Figure: Threaded holes for horizontal mounting
3.
Determine which threaded holes on the loudspeaker are required for mounting, depending on the
loudspeaker's mounting orientation. See the following figures.
4.
Using the included T3 square drive, remove the plastic inserts from the appropriate threaded holes on each
end of the loudspeaker.
CAUTION: Do not attach the loudspeaker to the U-bracket using the plastic inserts.
5.
Insert one M8 bolt and rubber washer into the threaded hole that corresponds to the open end of the
U-bracket, on each end of the loudspeaker. Do not tighten.
NOTE: Use only the included hardware to attach the U-bracket to the loudspeaker.
6.
Use the U-bracket as a guide to mark the fastening holes on the mounting surface.
CAUTION: To attach U-brackets to the mounting surface, choose fasteners that are consistent with all local
building codes and requirements to support the weight of the speaker. As a general guideline, use 5/16" x
3" lag screws into wood and 5/16" - 18 double expansion anchors a minimum of 1.5 inches into concrete and
masonry block.
7.
Drill holes into mounting surface, using previously marked positions.
8.
Attach the U-bracket to the building surface using the required fasteners, such as those specified in Step 6.
9.
Place the loudspeaker on the bracket by sliding the M8 bolts attached to the loudspeaker into the bracket
slots. Keep the rubber washers between the bracket and the speaker enclosure.
10.
Insert one M8 bolt and rubber washer into the remaining threaded hole, on each end of the loudspeaker.
Place the washer between the U-bracket and the loudspeaker.
11.
Tighten the four bolts with a 10 mm socket tool, using a torque not to exceed 21 to 28 Newton-meters (15 to
20 foot-pounds).
12.
Connect field wiring and test loudspeaker operation.
10 - Installation Guide
Figure: Threaded holes for vertical mounting
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