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 Jul 13 - Jul 18

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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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4.6 ★★★★★
Based on 231 reviews
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Verified Purchase
astronaut_elvis
Port Orchard, US
★★★★★ 4
Almost Perfect - More Glow Needed!
Color: green glow
Pretty good. Like the texture on the bottom of the remote, like a honeycomb. Makes the remote a lot easier to grip and subsequently find. One thing I’d change, I would make it more glow in the dark. It’s sort of glow in the dark, but I want a bright nuclear reaction of glow in the dark. This one just doesn’t have that power. For that, I give it 4 stars, but would buy again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 1, 2025
M
Verified Purchase
Mary R
West Palm Beach, US
★★★★★ 5
Fits perfectly!
Color: Black
Works well, fit perfectly!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 24, 2026
C
Verified Purchase
Chiabatta
Whiting, US
★★★★★ 5
Good purchase
Color: Black
This case is very nice and adds needed heft to the remote control and is comfortable to hold. I’d opt for a lighter colored one or glow in the dark because it disappears if you set it face down on a dark surface. Lost it a few times until I realized I was doing that… otherwise I’m very happy with this and may even buy an AirTag to pop into the slot. Price is good too.
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Reviewed in the United States on July 21, 2025
W
Verified Purchase
Wacorey
Belleville, US
★★★★★ 5
Nice Case
Color: Black
Great case! Very comfortable in your hand and controls are readily accessible.
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Reviewed in the United States on November 6, 2025
M
Verified Purchase
Maria
Charlottesville, US
★★★★★ 5
Great remote organizer
Color: Beige
Great quality, solid and well made, perfect size for my phone, eyeglass and tv remote. Looks nice! Highly recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 10, 2026

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