JBL MTC-81TB8 Datasheet
Pre-Install In-Ceiling
Tile Bridge for
MTC-81TB8
Professional Series
Key Features:
䉴
Fits 8138 speaker and MTC-81BB8
backbox
䉴
Load-bearing bridge eliminates
ceiling tile sag by distributing
weight to the ceiling’s support
system
䉴
Rust-resistant 19-Gauge (1 mm
thick) steel construction and
e-coated finish ensures long service
life.
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Fits 610 mm (24 in) and 600 mm
(23.6 in) tile grids
The MTC-81TB8 tile bridge is
designed for use in applications
requiring pre-installed backcans in
suspended ceiling applications and is
compatible with ceiling speakers
having a 286 mm (11¼ in) mounting
circle diameter, such as the JBL 8138
ceiling loudspeaker, and the JBL
MTC-81BB8 pre-install backbox. The
MTC-81TB8 is constructed with four
thru-holes for attaching screws to
backbox and four holes with clipnuts for the speaker attachment
screws (see assembly drawing).
Pre-Install Backbox
Specifications:
Material: 19 gauge (1.0 mm thickness) steel, finished in black polymer
e-coating for a high level of rust resistance.
Attachment Points: 4 clip-nuts (ie, speed-clips, tinnerman clips) fit 4 mm tapping
screws attaching speaker to tile bridge.
Thru-Holes: 4 thru-holes on 286 mm (11¼ in) mounting circle for attaching
tile bridge to backcan
Dimensions (L x D): 600 mm (23.6 in) length x 359 mm (14.0 in) width
Net Weight (ea): 0.9 kg (2.0 lbs)
Shipping Weight (ea): 1.3 kg (2.7 lbs)
Associated Models: 8138 200 mm (8 in) ceiling speaker
MTC-81BB8 backbox
JBL continually engages in research related to product improvement. Changes introduced into existing products without
notice are an expression of that philosophy.
䉴 MTC-81TB8 Pre-Install In-Ceiling Tile Bridge for Pre-Install Backbox
Assembly:
MTC-81BB8 Backcan
MTC-81TB8 Tile Bridge
Backcan/Tilebridge Screws, M4 x 12 mm
(4 places, packaged with backcan)
• Install screw through thru-hole in tile
bridge, and screw into clip nut in backcan.
Ceiling Material
8138 Speaker
Speaker Screws, M4 x 40 mm
(4 places, packaged with speaker)
• Install screw through thru-hole in
speaker, screw into clip nut in tile bridge,
and through thru-hole in backcan.
Dimensions:
ø5 dia. [0.2]
(x4 locations)
Thru holes for installing tile
bridge to backcan
Clip Nut
(x4 locations)
For installing speaker to
tile bridge
ø261 dia. [10.3]
ø286 dia. [11.25]
359 [14.1]
523 [20.6]
601 [23.7]
Dimensions in mm [inches]
JBL Professional
8500 Balboa Boulevard, P.O. Box 2200
Northridge, California 91329 U.S.A.
A Harman International Company
© Copyright 2009 JBL Professional
www.jblpro.com
SS MTC81TB8
CRP
06/09
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