Owner's Manual
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MTC-23UB-1,
25UB-1,
28UB-1
Instructions
U-Brackets
for
Control
23-1,
25-1,
28-1
The MTC-xxUB-1 brackets mount JBL Control Contractor Surface-Mount loudspeaker to
walls,
decks and ceilings and
provide swiveling capability. Read these instructions
carefully
before beginning.
Installing
speakers must be performed by experienced professionals.
If
you have any doubts about the integrity of the
structure you are mounting to or are not sure about the proper hardware or method to use, consult a structural engineer.
Q1y
1 pc.
2 pes.
2 pes.
2 pes.
2 pes
Description
Bracket
Adhesive Friction Washer, rubber
Pressure Trim Fitting, plastic
M6 Bolt, 6 mm dia. x 18 mm length, 18-8 Stainless Steel, hex-drive
(5
mm)
M6 Flat Washer, 18-8 Stainless Steel
Step
1
-
Peel
and Stick the Adhesive Friction Washers to the Loudspeaker
Identify
the two M6
Insert
Points
--one
at each end of the speaker. Remove the silicone caps from the M6 inserts and
dispose. Remove backing from one of the rubber Adhesive Friction Washers, exposing the adhesive. Stick Adhesive
Friction Washers to the speaker (adhesive side toward the speaker) at each M6
Insert
Point, with the opening
in
the
center of the friction washer lined up with the M6
Insert
Point, allowing bolt access to the M6
Insert
Point.
Step
2
-
Install the Bracket
Securely to Building Structure
Select mounting area where speaker
will
be positioned. Be sure there is adequate structural material for mounting, such
as a stud. Do not rely on acoustic tiles,
drywall,
etc, unless they are rated to support the weight of the speaker.
Follow
building code requirements to safely install the bracket to the building structure.
Be
sure the Drop-Down
Slot
on
the side arm of the bracket
is
on
the top of the bracket and not on the bottom. Tighten all
hardware permanently.
Step
3
-
Install the
Bolts Loosely
onto Speaker
Slide a Flat Washer and a plastic Pressure Trim Fitting onto each of the included M6 bolts. Screw bolts loosely into each
of the speaker's insert points loosely
(2
or 3 turns).
Step
4
-Install
Speaker into Bracket.
Position the speaker
in
between the bracket arms and slide the speaker down into bracket such that screws drop into
drop-down slots
on
each side of bracket. Important: Make sure Pressure Trim Fitting is on the outside of bracket.
Step 5 - Aim Speaker
Rotate speaker until it
is
aimed
in
desired direction, and slide speaker
in
the bracket slot either toward or away from
wall
to achieve desired distance. Then secure side bolts permanently using 5 mm hex wrench (not included,
installer
provided). Light thread-locking compound
is
acceptable to ensure solid installation.
Step
6
-Secondary
Safety
Cable
It
is strongly recommended that a properly rated secondary safety cable (provided by the installer) be used to secure
speaker from D-ring slot
on
back of speaker to a secondary mounting structure on building structure.
Bolt
Flat
Washer
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Pressure
Trim Fitting
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Washer (rubber)
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Assembled
JBL Professional,
8500
Balboa Blvd, Northridge,
CA
91329
Rev
160328