OSD Black R43 4" Reference Series Round Trimless In-Ceiling Speaker (Single)
The OSD Black R43 4-Inch Reference Series Round Trimless In-Ceiling Speaker (Single) is an ultra-compact architectural loudspeaker designed to match the visual footprint of modern 4-inch round recessed ceiling downlights. Engineered with a 4-inch woven carbon fiber woofer and a 3/4-inch aluminum dome tweeter, the R43 handles 80 watts of peak power (40W RMS) at 8 ohms across 80Hz to 20kHz, delivering crisp, articulate audio from an unobtrusive micro-flange ceiling opening.
If you want to know what compact in-ceiling speaker visually matches 4-inch round recessed ceiling lights without drawing attention to speakers, how a 4-inch carbon fiber woofer produces articulate vocal midrange, or how magnetic trimless grilles maintain clean ceiling aesthetics, the OSD Black R43 delivers the perfect solution. Interior designers and smart home owners choose the R43 for subtle, high-performance sound.


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Matches Modern 4-Inch Round Recessed Downlights
Designed to blend seamlessly with standard 4-inch round recessed lighting fixtures, maintaining symmetrical ceiling layouts in luxury residences and commercial spaces.
Woven Carbon Fiber 4-Inch Woofer
The high-stiffness woven carbon fiber cone provides articulate, natural vocal and instrumental reproduction across 80Hz to 20kHz with low distortion.
3/4-Inch Aluminum Dome Tweeter
Features a 3/4-inch aluminum dome tweeter for crisp, clear high frequencies that disperse evenly across intimate listening areas.
Magnetic Round Trimless Steel Grille
An ultra-thin magnetic round steel grille attaches flush to the baffle, easily painted to match any ceiling finish.
Specifications
| Speaker Type | 4-Inch 2-Way Compact Reference Round Trimless In-Ceiling Speaker |
| Packaging | Single (1 Speaker Included) |
| Woofer Driver | 4-Inch Woven Carbon Fiber Cone with Rubber Surround |
| Tweeter Driver | 3/4-Inch Aluminum Dome Tweeter |
| Power Handling (RMS) | 40 Watts RMS Continuous |
| Power Handling (Peak) | 80 Watts Peak Power |
| Impedance | 8 Ohms Nominal |
| Frequency Response | 80Hz - 20kHz (+/- 3dB) |
| Sensitivity (1W/1m) | 86 dB |
| Grille Type | Magnetic Paintable Round Steel Trimless Grille |
| Cutout Dimensions | 4.75 Inches (121 mm) Diameter |
| Overall Dimensions | 5.5 Inches (140 mm) Diameter x 3.0 Inches (76 mm) Depth |
| Mounting Depth | 3.0 Inches (76 mm) |
| Unit Weight | 3.5 lbs (1.6 kg) |
In The Box Contents
- 1x OSD Black R43 4-Inch Reference Series Round Trimless In-Ceiling Speaker
- 1x Magnetic Paintable White Round Steel Grille
- 1x Precision Round Cutout Installation Template
- 1x Protective Paint Mask Shield
- 1x Detailed Installation Guide
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