JBL MTC-300BB12 3 Cubic Ft. Backbox for Control 300 Series 12" Drivers

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About JBL MTC-300BB12

The JBL MTC-300BB12 Three-Cubic-Foot Backbox features extra-thick 16-gauge metal construction and a thick resonance-eliminating lining that also provides extra bass response. Made for the Control 300 Series 12" Drivers, this backbox has a dual-mounting system for baffle and knockouts on all four sides.

JBL MTC-300BB12 Features

  • Knockouts on top and all four sides
  • Dual mounting system for baffle
  • Mounting platform for an optional high-power 70V/100V transformer
  • Lined with 12 mm (1/2 inch) thick MDF to eliminate resonances and to provide extra bass response
  • Extra-thick 16 gauge metal construction

JBL MTC-300BB12 Specifications

Safety Agency Rating
Suitable for use in air handling spaces, per U.L.-2043,U.L.-1480, NFPA90 & NFPA70A
Internal Volume
2.4 cu ft.
22.1 mm (0.87 in) diameter opening
Five (5) locations: 1 on top panel, 1 on each side and end
Ceiling Cut Out
378 x 378 mm (14.9 x 14.9 in)
20.6 kg (45.5 lbs)
External Volume
3 cu ft, nominal
Dimensions (H x W x D)
12.1 x 23.1 x 18.2" (308 x 587 x 461mm)
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