OSD ACE840 8" Trimless Fiberglass In-Ceiling Speakers (Pair)
The OSD Audio ACE840 8-Inch High Definition Trimless In-Ceiling Speakers (Pair) fill large rooms with commanding sound for whole-house music, media rooms, and home theater surrounds. Built with an 8-inch lightweight woven fiberglass cone woofer with butyl rubber surround and a 1-inch pivoting titanium dome tweeter, the ACE840 achieves deep, controlled bass extension down to 35Hz and detailed, directional highs up to 20kHz. Equipped with gold-plated 5-way binding posts, an ultra-thin magnetic micro-flange paintable grille, and built-in dog-ear brackets, this 2-way architectural loudspeaker combines high-definition performance with borderless ceiling elegance.
If you want to know what 8-inch in-ceiling architectural speakers deliver deep 35Hz bass with pristine clarity, how pivoting titanium tweeters aim highs toward your listening seat, or how fiberglass cones provide long-term durability, the OSD ACE840 delivers exceptional performance. Custom audio integrators and home theater designers seeking 100W power handling, 88dB sensitivity, gold-plated 5-way binding posts, and a 10-year warranty will appreciate the acoustic engineering of the ACE840.
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Heard, Not Seen: High-Definition Sound
A discreet, modern design interior decorators love with strong audio performance to match. The 8-inch ACE840 pair fills large rooms with sound for whole-house music, media rooms, and home theater surround channels while disappearing cleanly into your ceiling.
Fiberglass Woofer & Pivoting Titanium Tweeter
An 8-inch woven fiberglass woofer gives deep, controlled bass down to 35Hz and clean midrange clarity, while the 1-inch pivoting titanium dome tweeter aims detailed highs directly at your listening seat.
Built to Last with Butyl Rubber Surround & 5-Way Posts
Butyl rubber woofer surrounds provide deeper bass, wider frequency response, and significantly longer lifespan than standard foam surrounds. Gold-plated 5-way binding posts keep audio cable connections secure in permanent installations.
Nearly Invisible Grilles & Easy Installation
The micro-flange grille has a trim line of just 0.15 inches and is held on by strong neodymium magnets. Grilles can be spray-painted to match ceiling finishes. Built-in dog-ear brackets lock each speaker firmly to the ceiling into a 9.37-inch cutout.
Specifications
| Speaker Type | 8-Inch High Definition Trimless In-Ceiling Speakers |
| Packaging Quantity | Pair (2 Speakers Included) |
| Woofer Driver | 8-Inch Woven Fiberglass Cone with Butyl Rubber Surround |
| Tweeter Driver | 1-Inch Pivoting Titanium Dome Tweeter |
| Power Handling | 100 Watts RMS / 175 Watts Peak |
| Frequency Response | 35 Hz - 20 kHz |
| Sensitivity | 88 dB (1W/1M) |
| Nominal Impedance | 8 Ohms |
| Cutout Dimensions | 9.37 Inches (238 mm) Diameter |
| Mounting Depth | 4.41 Inches (112 mm) |
| Overall Dimensions | 10.79 Inches (274 mm) Diameter |
| Inputs | Gold-Plated 5-Way Binding Posts |
| Grille Type | Magnetic Spray-Paintable Steel Grille Included |
| Warranty | 10-Year Manufacturer Warranty |
In The Box Contents
- 2x OSD Audio ACE840 8-Inch Fiberglass In-Ceiling Speakers
- 2x Spray-Paintable Magnetic Trimless White Metal Grilles
- 1x Cardboard Cutout Installation Template
- 1x Installation Manual
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