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Product Image
 
MTC-81BB8
Pre-Install
In-Ceiling Backcan

 
Spec Sheet
8138 FAQ
Hi Res Photo
The MTC-81BB8 is designed for use in applications requiring preinstalled backcans and is compatible with ceiling speakers having a 286 mm (11.25 in) mounting circle diameter, such as the JBL 8138 ceiling loudspeaker, and the JBL MTC-81TB8 tile bridge for suspended ceilings.
Features :   Specifications :
  • Fits 8138 speaker and MTC-81TB8 Tile Bridge
  • Extra-large 7.4 liter (0.26 cu ft) volume allows for extra bass
  • Industry standard 286 mm (11.25 in) mounting circle
  • Five conduit knockouts
  • Nesting during storage minimizes storage space requirements
 
Internal Volume   :   7.4 liters (0.26 cu ft)

Knockouts   :   22 mm (0.87 in) diameter opening

Five (5) locations   :   4 on side of can
1 on top of panel of can

Suspension Tabs   :   2 flexible perforated mounting straps, one on each side.

Attachment Points   :   4 clip-nuts on 286 mm (11.25 in) mounting circle fix M4 tapping screws for attaching tile bridge to backcan, plus 4 thru holes providing clearance for screws from speaker to attach to tile bridge (see assembly drawing).

Material   :   16 gauge (1.3 mm thick) steel,
finished in black polymer
E-coating for a high level of rust resistance.

Dimensions (H x W x D)   :   178 mm (7 in) height x 300 mm (11.75 in) width and depth

Net Weight (ea)   :   1.1 kg (2.5 lbs)

Shipping Weight (ea)   :   1.5 kg (3.2 lbs)

Associated Models   :   8138 200 mm (8 in) ceiling speaker
MTC-81TB8 tile bridge for 600 mm (24 in) ceiling tile applications.