




About The Monitor Audio CSS230 In-Ceiling Speakers
The CSS230 is a brilliantly innovative in-ceiling 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" (76 mm) mid-bass units achieve the bass output of a 6½" (165 mm) 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.
Key Features
- Super-slim mounting depth 50 mm (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 19 mm 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 any décor
- Patented Tri-Grip dog leg fixings – Reliable, robust and quick to install
- Existing CB6 pre-construction bracket for easier system design and planning
Our Take
The Monitor Audio CSS230 in-ceiling speakers redefine installation possibilities with their innovative design, achieving high-fidelity sound quality in tight spaces. With an ultra-slim 50 mm (2") mounting depth, these speakers are ideal for challenging areas like 2" stud frames or areas with restricted space due to pipework or cabling. Their unique hybrid back-box and proprietary driver array deliver consistent, high-performance audio, and their three 3" mid-bass drivers mimic the bass output of a much larger 6½" driver. The CSS230's design incorporates high-quality crossover components for exceptional audio detail and dynamics, maintaining Monitor Audio's commitment to sonic excellence. A choice of flush-fitted grille options, paintable to match any décor, and patented Tri-Grip fixings make installation easy and discreet. In 'ported' mode, a gauze keeps dust from entering, ensuring longevity. These features make the CSS230 a versatile and high-performing solution for audiophiles and installers alike.
Main Features & Specifications
- Design: High Performance Shallow Mount In-Ceiling Speaker – Sold Individually
- Frequency Response (-6 dB): 100 Hz – 30 kHz sealed 'CP' (85 Hz – 30 kHz open back)
- Nominal Impedance: 8 Ohms
- Sensitivity (1W@1M): 86 dB
- Maximum SPL: 103.8 dBA
- Power Handling (RMS): 40 Watts – full range (60 Watts with crossover set to 100 Hz @ 12 dB/Octave)
- Recommended Amplifier Requirements: 10 - 60 Watts
- Drive Unit Complement
- 3 x 3" (76 mm) C-CAM Cone Mid/Bass Drivers
- 1 x ¾"(19 mm) C-CAM Gold Dome Tweeter
- Crossover Recommendation using AVR/Processor: 100 Hz at a minimum of 12 dB/Octave (24 dB/Octave optimum)
- Connections: Gold Plated Sprung push terminals – for bare wire connection up to 4 mm
- Fixing Type: 3 Position Tri-Grip Dog Leg Fixings
- Construction Material: ABS (UL94 rated, RoHS2 Compliant) – Painted steel grille
- Pre-Construction Bracket: CB6 Pre-Construction Bracket (Purple)
- Overall Diameter (Including Grille): 250 mm
- Overall Depth (Including Grille): 54 mm
- Cut-Out Hole Diameter: 211 mm
- Mounting Depth: 50 mm
- Optional Square Grille - Outer Dimensions: 249 x 249 mm
- Weight: 2.88 kg
- Manufacturer's Warranty: Lifetime Warranty - applies to the original purchaser only
Note: Features & Specifications Subject To Change Without Notice. E&OE.