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    SKU: ACE870

    OSD ACE8708" Angled Trimless LCR In-Ceiling Speaker, 1" Pivoting Tweeter Dolby Atmos Ready (Single)

    Purchase ACE870 8" Angled Trimless LCR In Ceiling Speaker, 1" Pivoting Tweeter Dolby Atmos® Ready, Single
    • Outdoor Speaker Depot SKU: ACE870 trimless-ceiling-speaker-ace950
    • In Stock


      Compare at: $230.99
      You Save: $76.86

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    In addition to crisp, detailed mid and high frequencies, this single in-ceiling speaker kicks out impressive bass due in part to the 8” carbon fiber composite woofer and heavy-duty and efficient magnet structure that focuses energy within the voice coil gap. Other Audiophile features designed into the ACE870 include front-mounted contour switch as well as butyl rubber surround that gives the speaker more excursion capability for deeper bass and wider frequency response. The ACE870 installs easily into ceilings with four easy-to-lock-in dog-eared brackets and includes a cut-out mounting template.

    Why Go Trimless?

    It's really a matter of aesthetic preference. These flush-mounted speakers are hardly noticeable; that is until they're playing. Our Architectural Ceiling Element (ACE) Trimless speakers do not include the 3/4-inch trim you typically see around in-wall and ceiling speakers. 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.

    What are the Benefits of an Angled In-Ceiling Speaker?

    The angled speaker is a real problem solver because not every space is ideal for custom home theater sound applications. The angled in-ceiling speaker features a 15° angle for the mid-bass driver plus a pivoting tweeter for placement flexibility. This speaker can be part of a three-piece set to handle the front stage of the surround system when both on-wall and in-wall are not a favorable option. The angled design allows the ideal placement in the ceiling closer to the wall just above the monitor. This creates a more realistic sound image when compared to normal in-ceiling speakers that are mounted closer to directly above the viewing area. Standard in-ceiling speakers are generally placed at least three feet from the wall to avoid reflective sound. The angle speaker can be placed within a foot of the wall

    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 wider frequency response, and its shelf life is closer to 25 years compared to the foam at 12 to 15 years.
    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" Angled LCR 2-Way Trimless Ceiling Speaker
    • Woofer: 8" Carbon Fiber Composite Cone
    • Tweeter: 1" Pivoting Titanium Dome
    • Frequency Response: 35Hz- 20kH
    • Power Handling: 175W
    • Sensitivity: 88 dB 1w/1m
    • Impedance: 8 Ohms
    • Dolby Atmos® - Ready for True 3D Surround Sound
    • Includes Front-Mounted Contour Switch
    • Angled Design Allows Ideal Placement Closer to the Wall
    • Spray Paintable Magnetic Grille Included
    • Inputs: Gold-plated 5-way Binding Posts
    • Install-friendly Dog Ear Installation Brackets
    • Diameter & Depth: 11.5" x 5.37"
    • Cutout Diameter: 9.87"
    • Sold As: Single
    • Warranty: 10 Years
    15 Questions asked
    Have a Questions?

    What's on your mind?

    Tim Hoiwell • 12/17/2019, 2:17:43 PM I'm going to have an outdoor system under my patio/carport at the beach location. Will these speakers do well in that type of environment?
    Customer Service • 12/17/2019, 2:17:43 PM
    Hi Tim: Our WRS series Outdoor speakers would be better suited for your application. They are weatherproof and feature rust proof Aluminum grills. The ICE840WRS and ACE640WRS are the upgrade models featuring 12 dB per octave second order crossover networks. Both are so popular we are sold out but are expecting a new shipment in November. Note, the angled ACE870 LCR speakers are ideal for an interior custom home theater. Typically customers use patio speakers for outdoor custom home theater (featuring a surround Receiver) or for playing sound for their outdoor TV. Good luck TL/5257
    Jack • 12/17/2019, 2:17:43 PM What construction bracket fits the ace870?
    Customer Service • 12/17/2019, 2:17:43 PM
    Hi Jack: Our BK-NC8A will work on the ACE870. You will need to customer Service/sales for a price on the New Construction Bracket that is sold as each just like the ACE870 angled 8" in-ceiling speaker. TL/5261
    Tim • 12/17/2019, 2:17:43 PM Do these ace870 speakers perform better in backer box’s? I have seen on the internet that some speakers have better bass response without boxes. My house has foam insulation on the inside of the roof so I don’t have a problem with insulation in contact with the speaker. I read where you recommend boxes to someone else. Have you tested with and without boxes?
    Customer Service • 12/17/2019, 2:17:43 PM
    Hi Tim: These speakers feature a free air woofer that adapts to the cavity where it is mounted, whether just an area between two ceiling joists or a section reinforced with a custom enclosure. It sounded like you are cutting a hole in a finished ceiling, but worried about the insulation already in between the joists. The perfect solution for this is a product from OEM systems that cover over the back of the speaker. Here is a link for you to check it out: On-line shipped from San Diego; This cover provides the protection you are looking for in your application. I have not heard the speaker with a back box. Good Luck TL/5317
    Leif • 12/17/2019, 2:17:43 PM What is the ohms of the ace870 ?
    Customer Service • 12/17/2019, 2:17:43 PM
    Hi Leif: The impedance is 8 ohms just like the 6.5" ACE670. Thank you for pointing that our, we will get that added to the bullet points of the ACE870. A great speaker, by the way, ideal for front stage LCR while the ACE670 is the perfect match for Surrounds and effects speakers TL/5323
    sonya • 12/17/2019, 2:17:43 PM i was looking at your pre amp but it doesn't except enough inputs and i would like to be able to chose to send signal to two power amps when i want to. These are the components i have, Item Code: OSD-AMP300 and two Item Code: OSD-TSM8. Do you have any suggestions where to shop? or what to put in my search query? i don't care about recording or adjusting the highs mid or base. thank you for any help you can give.
    Customer Service • 12/17/2019, 2:17:43 PM
    Hi Sonya: So far I know you have a single OSD AMP300 connected to two TSM8 speaker Selectors. You also state that the OSD Pre-One Preamplifier does not have enough inputs (1 phone only and three others). How many sources in total do you have and what are they? Are you using Speaker A for the first TSM8 and Speaker B for the second TSM8? I could better answer your question with a little more information. Have you thought about adding a second OSD AMP300, so you have one amp for each TSM8? That will give you four source inputs total (two each amp; automatic source switching). Please let me know more? TL/5414