JBL MTC-300BB12 3 Cu. Ft. Backbox for Control 300 Series Ceiling Speakers
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|---|---|---|
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Description
The JBL MTC-300BB12 is a 3 cu. ft. backbox for the 12 in. Control 300 Series ceiling speakers: the Control 321C, 321CT, 322C, 322CT and 312CS. It is made of extra-thick 16 gauge steel, and a 12 mm (1/2 in.) MDF lining damps resonances and adds bass response.
A dual mounting system holds the baffle. Inside, a platform with preinstalled studs takes the optional MTC-300T150 70V/100V transformer.
Features
- Extra-thick 16 gauge steel
- 12 mm (1/2 in.) MDF lining damps resonances
- Knockouts on the top and all four sides
- Dual mounting system for the baffle
- Mounting platform for the optional MTC-300T150 transformer
Specifications
- Fits: Control 321C, 321CT, 322C, 322CT, 312CS
- External Volume: 3 cu. ft. nominal
- Internal Volume: 2.4 cu. ft.
- Knockouts: 5 x 22.1 mm (0.87 in.): one on the top, one on each side and end
- Height: 308 mm (12.1 in.) above the ceiling; 324 mm (12.6 in.) total
- Width: 587 mm (23.1 in.)
- Depth: 461 mm (18.2 in.) cabinet; 505 mm (19.9 in.) including side tabs
- Ceiling Cutout: 378 x 378 mm (14.9 x 14.9 in.)
- Safety Agency Rating: Suitable for air handling spaces per UL2043, UL1480, NFPA 90 and NFPA 70A
- Net Weight: 20.6 kg (45.5 lb)
In the Box
- MTC-300BB12 backbox
- 4 x M4 x 14 mm machine screws for one baffle mounting method
- 6 x #10 x 0.75 in. (19 mm) sheet metal screws for the other baffle mounting method
- 4 x M4 nuts for mounting the optional transformer