MONITOR AUDIO CSS230 Super Slim Ceiling Speaker (Each)

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MONITOR AUDIO CSS230 Super Slim Ceiling Speaker (Each)
Warranty Period: Limited Lifetime (Domestic) Sold as: Single Ceiling Speaker


The CSS230 is a brilliantly innovative back-box design with an impressively shallow 50 mm (2") mounting depth, custom built to offer hi-fi levels of performance in spaces where no high quality speaker has gone before.

Between 2" stud frames or where pipework or cabling reduces mounting depth, the hybrid back-box construction and proprietary full-range driver array combine to deliver consistent audio quality with exceptional installation versatility.

The hybrid back-box provides the best of all worlds for installer and customer. Combined, the three proprietary 3" mid-bass units achieve the bass output of a 6 1/2" driver, all from a super-stealthy flush-fitted profile. 

In keeping with Monitor Audio’s renowned design rigour, the crossover comprises high quality film capacitors and low loss inductors - selected for signal integrity - ensuring peerless audio detail and dynamics from a speaker of its size and application. When the CSS230 is in ‘ported’ mode, a fine gauze protects the acoustic system from dust ingress.



Frequency Response (-6dB)

  • 100Hz - 30kHz Sealed
  • 85Hz - 30kHz Open Back

Nominal Impedance

  • 8 Ohms

Sensitivity ([email protected])

  • 86dB

Maximum SPL

  • 103.8dBA

Power Handling (RMS)

  • 40 Watts Full Range
  • 60 Watts with crossover set to100 Hz

Recommended Amplifier Requirements

  • 10-60W

Drive Units

  • 3x 3" C-CAM Cone Bass-Mid Drivers
  • 1x 19mm (3/4") C-CAM Gold Dome Tweeter

Crossover Recommendation

  • 100Hz at a minimum of 12dB/Octave (24dB/Octave optimum)


  • Gold Plated Sprung Push Terminals (for bare wire connections up to 4mm x2)

Overall Diameter (Including Grille)

  • 250mm

Overall Depth (Including Grille)

  • 54mm

Cut-Out Hole Diameter

  • 211mm

Mounting Depth

  • 50mm

Fixing Type

  • 3 Position Tri-Grip dog leg fixings

Construction Material

  • ABS (UL94 rated, RoHS2 Compliant)
  • Painted Steel Grille


  • 2.88kg