SKU: 97131683377

Monitor Audio CSS230 Super Slim In-Ceiling Speaker

Sale price$230.40 Regular price$256.00
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Ships within 48 hours · Estimated delivery Aug 2 - Aug 7

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Description

Monitor Audio CSS230 Super Slim In-Ceiling SpeakerKey Information Sensitivity (1W @ 1M): 86 dB Cut Out Diameter: 211 mm Mounting Depth: 50 mm Power Handling (RMS): 40 Ws Nominal Impedance: 8 ohms Driver Size: 3 " Sold As: Single 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

Key Information

  • Sensitivity (1W @ 1M):86 dB
  • Cut-Out Diameter:211 mm
  • Mounting Depth:50 mm
  • Power Handling (RMS):40 Ws
  • Nominal Impedance:8 ohms
  • Driver Size:3 "
  • Sold As: Single 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.

Optional square or premium grille can be used with this model. 

Specifications

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 W

Drive Unit Complement: 3 x 3" C-CAM cone bass-mid drivers

1 x 19 mm (3/4") C-CAM Gold Dome tweeter

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

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

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

Fixing Type: 3 position Tri-Grip dog leg fixings

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

Weight: 2.88 kg

Pre-Construction Bracket: CB6 Pre-Construction Bracket (Purple)

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 97131683377

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Sidney DeNeve
Houston, US
★★★★★ 5
Lightweight, no pilling over moisturizer
Style: Acne/Rosacea Prone Skin
I tried this sunscreen after previously using EltaMD UV Clear and I won't go back. I wanted something without octinoxate and that wouldn't pill when layered over my moisturizer (Vanicream Daily Facial Moisturizer). This does the job perfectly. It's lightweight and feels great on my skin. So far, no breakouts.
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Reviewed in the United States on May 15, 2026
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Marisa
Dallas, US
★★★★★ 4
Pretty good
Style: Acne/Rosacea Prone Skin
Works well enough, a little greasy for my preference but doesn’t break me out
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Reviewed in the United States on June 5, 2026
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Maria S Manfugas
Los Angeles, US
★★★★★ 5
Sunscreen with Niacinamide La Roche-Posay
Style: Acne/Rosacea Prone Skin
This sunscreen has been a real discovery. Its light texture absorbs quickly, leaves no greasy feeling or white residue, and is perfect for daily use even under makeup. Since I use it, I feel my skin more protected, hydrated and with a more uniform tone. The combination of high sun protection with niacinamide is a success: it helps prevent spots, soothes the skin and improves its texture over time. In addition, it does not clog pores or cause outbreaks, which is ideal for sensitive skin or skin with a tendency to acne. It is effective, comfortable to wear and fulfills what it promises. If you are looking for a sunscreen that not only protects, but also cares for and improves your skin, this is a safe investment.
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Reviewed in the United States on August 13, 2025
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Makitsew
Omaha, US
★★★★★ 5
Easy to apply and wear -
Style: Acne/Rosacea Prone Skin
This is good stuff! I do not wear makeup, ever. I also have never been a moisturizer fancy soap kind of gal. Not great about putting sunscreen on my face- all products are heavy and not right for me. And along comes this sunscreen and I go for it and now wear it daily!!! So easy to apply, not greasy, not heavy feeling. Rubs invisible easily. This is good stuff. Worthy and it seems to also really work!! I highly recommend it. I am not paid for my reviews. I’m just like you.
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Reviewed in the United States on July 10, 2025
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Grant A Loosvelt
Whiting, US
★★★★★ 5
Clear Clean face
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Recommended by my dermatologist for my daughter. Was having tiny bumps on her forehead. Cleared them up. Works great. I recommend as well
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