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This product is a special buy-in. Special buy-in products are goods specially bought in on customer's request. After acceptance, special buy-in products cannot be cancelled or the goods returned, unless Radio Parts and its supplier agrees to the cancellation of the corresponding order and return of goods. Prices are subject to change and in the event that our purchase price has changed, we will notify you before finalising your order. Please call us on 1800 337 366 for availability, ETA or if you have further questions.
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CS140R Slim 4" 2 way in-ceiling speaker with round grille

The CS140 in-ceiling model features a proprietary 4-inch MMP IIcone and a pivoting version of our acclaimed C-CAM Gold Dome tweeter.

Offering superlative dynamic delivery in a super-discreetformat, the CS140 will deliver fabulous full-range sound with stealthy versatility.

Also available with a square grille ( special order )

MMP II (Metal Matrix Polymer - 2nd Generation)

Metal Matrix Polymer driver cones have a polypropylene base loaded with metallic particles to offer a rigid and responsive structure.

They are manufactured using a sophisticated high-pressureinjection process, which modulates cone thickness at critical points to optimise stiffness and consistency, resulting in a superior sonic performance.

The Gold Dome tweeter is formed from a ceramic-coated aluminium/magnesium alloy, gold anodised to a specific thickness for ideal stiffness and damping characteristics.

Its new profile and surround geometry have been developed using advanced modelling tools, to provide the optimum qualities for accurate sound reproduction.




Frequency response 75 Hz – 30 kHz

Nominal Impedance

6 ohms
Sensitivity (1W@1M) 85 db
Maximum SPL 102.8 dBA
Power Handling (RMS) 50 W
Recommended Amplifier Requirements 10– 50 W
Drive Unit Complement 1 x 4"MMP IIcone bass driver.
1 x 1" (25 mm)C-CAMpivoting Gold Dome tweeter
Acoustic Configuration 2 way
Overall Dimensions (Including Grille (H x W)) Round: 180.2 mm (71/8")
Square: 176.7 x 176.7 mm (615/16x 615/16")
Mounting Depth 98.6 mm (37/8")
Cut-Out Hole Diameter 149 mm (57/8")
Fixing Type 3 positionTri-Gripdog fixings
Connection Gold plated ‘push’ type terminals
Grille attachment Magnetic
Construction Material Mineral filled ABS, RoHS compliant
Weight 1.18 kg (2lb 10 oz)
Pre- Construction bracket CB4Pre-Construction Bracket(Pink)
Back Box CCBOX-R