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    SKU: OSD-ACE850

    OSD ACE8508" Kevlar® Woofer Trimless Thin Bezel 2-Way In-Ceiling Speaker Pair

    Purchase 8" Kevlar® Woofer Trimless Thin Bezel 2-Way In-Ceiling Speaker Pair - ACE850
    • Outdoor Speaker Depot SKU: OSD-ACE850 acrehifipa8c
    • Less then 5 - Order Now!


      Compare at: $205.99
      You Save: $68.67

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    The ACE850 incorporates premium technologies such as Kevlar® woofers, pivoting titanium dome tweeters and sophisticated crossovers provide deep bass and exceptional top-end frequency response. Kevlar® is the best component for woofers. It responds note for note without coloration and has big cranking power so you can dial up your system for higher listening levels.

    Step Up Features You'll Love!
    • Deep, rich bass and exceptional top-end frequency response
    • Sturdy Kevlar® cone woofer handles high volume levels
    • Pivoting aluminum dome tweeter
    • Spray paintable grilles to match any decor
    Audiophiles Love Kevlar® Woofers
    Kevlar® is a super strong material known for its ability to produce powerful but very smooth bass tones. Kevlar® woofer cones retain their shape even at very high energy levels, which means you can crank up the volume and experience spine-tingling sound without distortion or coloration.

    Why Go Trimless?
    It's really a matter of aesthetic preference. Our Architectural Ceiling Element (ACE) Trimless speakers do not include the the 3/4-inch trim you typically see around in-wall and ceiling speakers. This gives the speakers a much stealthier appearance. The micro flange grilles are attached by extremely powerful magnets that stay put for quick and easy installation. Adds less visual impact on your architectural audio installation.

    Pivoting Titanium Dome Tweeter
    The job of the tweeter is to deliver the higher frequencies of music and soundtracks. The tweeter is also adjustable, meaning it can be aimed toward the listening area. This can make a big difference in sound quality especially for dialog and higher frequencies.

    How does this speaker mount in the ceiling?
    Customers often ask us if they need special installation mounting brackets on their OSD ceiling speakers. The answer is no and here’s why. All our in-ceiling speakers feature a dog leg (L-shaped) mounting system that is part of the frame. Before you install the speakers, remove the grille and you’ll see several the mounting screws near the front frame. These screws need to be loosened to activate the dog leg clamps. Use a screwdriver to loosen (turn to the left) these screws and the clamp will come loose. When the speaker is in position in the ceiling, tighten (turn to the right) the screw and the speaker will be secured to the ceiling.

    What Type of Speaker Wire and What Gauge?
    Wiring is not included with in-ceiling speakers so you will have to purchase some. We recommend our OSD Audio CL3/FT4 cable that is UL (fire) rated for in-wall and outdoor speaker installs. This type of cable includes a heavy-duty outer jacket approved for in-wall/in-ceiling installation. The high-quality plastic jacket is also very flexible so it's easy to run the wires inside the wall. As for the gauge, for runs up to 100 feet for background music, 16-gauge will be fine. If the run is approaching or exceeding 100 feet, we suggest 14-gauge wire. 

    What Is Butyl Rubber Surround?
    With almost double the shelf life of foam, butyl rubber has been the choice of speaker designers looking to optimize the sound based upon materials that go together. The Surround is just one of the integral parts of the speaker's motor structure. Butyl Rubber gives the speaker more excursion capability featuring a deeper bass with a wider frequency response, and its shelf life is closer to 25 years compared to the foam at 12 to 15 years.

    Testing the Sound Quality of In-Ceiling Speakers
    Many customers like to test the sound quality of their new OSD Audio in-ceiling speakers before they install them. Keep in mind, however, that these flush-mount speakers are designed to be used in the wall or ceiling. Uninstalled in-wall/in-ceiling speakers will sound weak and tinny because without the proper enclosure (in this case your house wall) the speaker can’t produce the sound pressure level it needs. If you want to try them out, we recommend mounting the in-ceiling speakers into a box of about 3 cubic ft. or larger; or simply mount them in the ceiling and then listen. This will give you an accurate measure of the sound quality.

    For a retrofit installation, no construction bracket is needed.

    Warning: California's Proposition 65


    This product can expose you to chemicals, including vinyl chloride, which is known to the State of California to cause cancer. For more information, go to

    • Speaker Type: 8" Kevlar® Trimless Ceiling Speakers
    • Woofer: 8" Kevlar® Cone
    • Tweeter: 1" Pivoting Titanium Dome
    • Frequency Response: 35Hz - 20kHz
    • Power Handling: 175W
    • Sensitivity: 88 dB
    • Impedance: 8 Ohms
    • Spray Paintable Magnetic Grille Included
    • Inputs: Gold-plated 5-way Binding Posts
    • Install-friendly Dog Ear Installation Brackets
    • See New Construction Brackets For Compatibility
    • Diameter & Depth: 10.79" x 4.41"
    • Cutout Diameter: 9.37"
    • Sold As: Pair
    • Warranty: 10 Years
    17 Questions asked
    Have a Questions?

    What's on your mind?

    Randy Wiebe • 12/17/2019, 2:17:43 PM Can these speakers be used outside
    Customer Service • 12/17/2019, 2:17:43 PM
    Dear Customer, These are strictly indoor speakers, but check out the ice600wrs, those are for bathrooms and outdoors. CL
    Randy Wiebe • 12/17/2019, 2:17:43 PM Can these speakers be used outside
    Customer Service • 12/17/2019, 2:17:43 PM
    Dear Customer, These are strictly indoor speakers, but check out the ice600wrs, those are for bathrooms and outdoors. CL
    Corey • 12/17/2019, 2:17:43 PM Any idea when the preconstruction mounting brackets will be back in stock?
    Customer Service • 12/17/2019, 2:17:43 PM
    Hi Corey, You would use the bracket NCBC8-K for this speaker. For installation, snap the perforated tab on the inner ring and place the bracket with the lip facing down. CL /MA
    Corey • 12/17/2019, 2:17:43 PM We are installing these speakers in new construction. Our builder wants to enclose the back with a enclosure (wood / foam). What depth of box should we have him build? If you do not recommend back enclosure, how do you recommend to handle insulation? Thanks
    Customer Service • 12/17/2019, 2:17:43 PM
    Hi Corey, The box needs to be at least 5 to 6 inches to accommodate the depth of the speaker. These speakers work in an infinite baffle so they adapt to a broad range of enclosure sizes. You could have him build an enclosure featuring a top and two sides using the ceiling joists or studs as the other two sides. It's a good idea to isolate the speaker from the insulation. You can also load the enclosure with fiber fill (Dacron-Polyester fiberfill) that allows you to build a smaller enclosure. You can buy this at any fabric store or in a bedding section of a K-Mart or Home Depot. There are some simple solutions to covering the speaker with a wire mesh but if you have the ability to build enclosures, this is the optimum solution. TL/MA
    Rocco Leach • 12/17/2019, 2:17:43 PM Are the grills paintable?
    Customer Service • 12/17/2019, 2:17:43 PM
    Hi Rocco, Yes, you can paint the grills on these ceiling speakers as well as the frame. The kit also includes a paint shield. Be sure to use a fine spray paint, not a brush, or you could clog the holes, and when you paint the grill, be sure to remove the inner cloth ,typically found on the inside of the grill. TL/MA-1498