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

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  • Extra-thick 16 gauge metal construction.
  • Lined with 12 mm (½ inch) thick
    MDF to eliminate resonances and
    to provide extra bass response.
  • Knockouts on top and all four
    sides.
  • Dual mounting system for baffle.
  • Mounting platform for an optional
    high-power 70V/100V transformer.