JBL MTC-300BB12 Backbox For 12" C300

JBL's MTC-300BB12 is a rectangular, 3ft³ Backbox for use with any of the 12" JBL Control 300 Series speaker models.

Features

• Extra-thick 16-gauge metal construction
• Lined with 12mm (½") 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

Specifications

• External Volume: 3ft³, nominal
• Internal Volume: 2.4ft³
• Knockouts:
  • 0.87" (22.1mm) diameter opening
  • 5 locations: 1 on top panel, 1 on each side and end
• Height:
  • 12.1" (308mm) above ceiling
  • 12.6" (324mm) total
• Width 23.1" (587mm)
• Depth:
  • 18.2" (461mm) cabinet
  • 19.9" (505mm) including side tabs
• Ceiling Cut Out: 14.9" x 14.9" (378 x 378mm)
• Shipping Weight: 51 lbs. (23.1 kg)