The JBL MTC-81BB8 is designed for use in applications requiring preinstalled backcans and is compatible with ceiling speakers having a 11.25" (286 mm) mounting circle diameter, such as the JBL 8138 ceiling loudspeaker, and the JBL MTC-81TB8 tile bridge for suspended ceilings. Providing a larger backcan air volume than most cost-effective backcans, the MTC-81BB8 allows ceiling speakers to produce extra bass capability for a wider frequency response and improved overall sound quality. This angled-wall backcan nests to reduce inventory space and transportation costs. The MTC-81BB8 is supplied with five conduit knockouts, four clip-nuts for tile bridge to backcan attachment, as well as acoustic lining and two perforated bend-up mounting straps.
| Internal Volume | 7.4 liters (0.26 cu ft) |
|---|---|
| Knockouts | 0.87" (22 mm) diameter opening |
| Five Knockout 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 11.25" (286 mm) 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 |
| Material | 16 gauge (1.3 mm thick) steel, finished in black polymer E-coating for a high level of rust resistance |
| Associated Models | JBL 8138 8" (200 mm) ceiling speaker and MTC-81TB8 tile bridge |
| Dimensions (H x W x D) | 7" (178 mm) x 11.75" (300 mm) x 11.75" (300 mm) |
| Net Weight | 2.5 lbs (1.1 kg) |
| Shipping Weight | 3.2 lbs (1.5 kg) |
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
