Monitor Audio CSS230 Low Profile Ceiling Speaker (Each)

Model: CSS230
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The Monitor Audio CSS230 is a brilliantly innovative back-box design with an impressively shallow 50mm (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 61/2” driver, all from a super-stealthy flush-fitted profile


  • Super-slim mounting depth 50mm (2”) designed to fit within 2” stud walls or where space is restricted
  • Hybrid CP ‘Controlled Performance’ style, enclosed or open back-box option provides flexible high performance options and sound isolation in one (pictured right)
  • Driver configuration of three 3” C-CAM bass/mid-range drivers in a radial array around a 19mm C-CAM gold dome tweeter (fixed position) and high quality crossover design offers Monitor Audio’s award-winning signature sound quality
  • Gold plated sprung push terminals are reliable and easy to connect
  • Magnetically attached ‘Trim-less’ round and square grille options for discreet, reliable and easy servicing, flexible in-wall/ceiling installation, paintable to blend with décor
  • Patented Tri-Grip dog leg fixings – Reliable, robust and quick to install
  • Existing pre-construction bracket for easier system design and planning 



Frequency Response (-6dB): 100Hz – 30KHz sealed ‘CP’ (85Hz – 30KHz –open back)

Impedance (nominal):

Sensitivity (1W @ 1M): 86dB

Maximum SPL: 103.8dBA

Power Handling (RMS): 40 Watts – Full range (60 watts with crossover set to 100Hz @ 12dB/Octave)

Recommended Amp Requirements: 10 - 60w

Drive Unit Complement: 3 x 3” C-CAM cone bass-mid drivers, 1 x 19mm (3/4”) C-CAM Gold Dome tweeter

Crossover Recommendation - using an AVR: 100Hz at a minimum of 12dB/Octave (24dB/Octave optimum)

Connection: Gold Plated Sprung push terminals – for bare wire connection up to 4mm(2)

Overall Diameter (including grille): 250mm (9 13/16”)

Overall Depth (including grille): 250mm (9 13/16”)

Cut Out Diameter: 211mm (8 1/4”)

Mounting Depth: 50mm (2”)

Fxing Type: 3 position Tri-Grip dog leg fixings

Construction Materials: ABS (UL94 rated, RoHS2 Compliant) – Painted steel grille

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