Monitor Audio CMBOX-R In-Ceiling Back Box (single)

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Sale price£62.50 Regular price£65.00
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As used when access to the joists is available - the CMBOX-R is the ideal back box for open backed speakers to control sonic performance as well as ensuring a solid and seamless install process.

Additional packers maybe required on the external side of the box subject to your joist configuration. 

The Monitor Audio CMBOX-R (regular) is a Back Box made of MDF and has been designed to enable you to install their "Slim", "Core" and "All Weather CI" range in-ceiling speakers with a little more ease. This Back Box is compatible with Monitor Audio's following custom installation speakers, CS160, CS180, C165, C165-T2, C265, C265-IDC, C265-FX, AWC265, AWC265-T2, C180, C180-T2, C280, C280-IDC, C380-FX, C380-IDC, AWC28 and AWC280-T2.

The Monitor Audio CMBOX-R comes with Small and Large Ring (fitted) adapters, which can also be removed. Please see the compatible speakers in the table below.

  • MDF back box design
  • Includes small and large inserts
  • 17 Monitor Audio speaker configurations
  • Downloadable CAD cutout instructions included for easier installation


Dimensions 300 x 350 x 160 mm

Cut-Out-Dimensions - Small Ring

CS160 173 mm

Cut-Out-Dimensions - Large Ring (fitted)

CS180 218 mm
C165 218 mm
C165-T2 218 mm
C265 218 mm
C265-IDC 218 mm
C265-FX 218 mm
AWC265 218 mm
AWC265-T2 218 mm

Cut-Out-Dimensions - No Ring

C180 250 mm
C180-T2 250 mm
C280 250 mm
C280-IDC 250 mm
C380-FX 250 mm
C380-IDC 250 mm
AWC280 250 mm
AWC280-T2 250 mm

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