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SKU: OSD-ACE500 5.25" Trimless Thin Bezel In-Ceiling Speaker Pair - ACE500

Purchase 5.25" Trimless Thin Bezel In-Ceiling Speaker Pair - ACE500
  • SKU: OSD-ACE500 ceiling-speaker-trimless-invisible-osd-ace500

    5.25" Trimless Thin Bezel In-Ceiling Speaker Pair - ACE500

  • $45.00

    Compare at: $67.99 You Save $22.99

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The ACE500 5.25-inch trimless thin bezel ceiling speaker from OSD Audio is ideal for background music in an office space, commercial environment or public building. It has a clean, contemporary appearance that seamlessly blends into any decor, and the size even matches nicely with recessed lights. These trimless recessed speakers have a 5.25-inch woofer and .75-inch tweeter, and can handle 75 watts of power. These ceiling speakers are made from durable ABS plastic material. Flush-mount speakers use the ceiling as its speaker enclosure, and the absence of trim on this model makes it completely unobtrusive within the architectural design of the room. If you're looking for a 5-inch in-ceiling speaker, the ACE500 may be the perfect choice.

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.

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 Di(2-ethylhexyl)phthalate (DEHP) which is known to the State of California to cause birth defects or other reproductive harm. For more information go to

  • Speaker Type: 5.25" Trimless Ceiling Speakers
  • Woofer: 5.25" Polypropylene Cone
  • Tweeter: 0.75" PEI Dome
  • Frequency Response: 79Hz - 20kHz (+/-3dB)
  • Power Handling: 75W
  • Sensitivity: 89 dB
  • Impedance: 8 Ohms
  • Spray Paintable Magnetic Grille Included
  • Inputs: Spring Loaded Binding Posts
  • Install-friendly Dog Ear Installation Brackets
  • Diameter & Depth: 7.72" x 3.27"
  • Cutout: 7.09"
  • Sold As: Pair
  • Warranty: 10 Years
8 Questions asked
Have a Questions?

What's on your mind?

Phil Blythe • 12/17/2019, 2:17:43 PM Were the installation brackets included? Thanks
Customer Service • 12/17/2019, 2:17:43 PM
Hi Phil: All our in-ceiling speakers feature a dog leg mounting system that is part of the frame. You do not need a new constructing mounting kit to install these. Remove the grill and you will see the three mounting screws that need activate the dog ears. Look closely at the image on the product page of the back of the speaker. The mounting ears are at 3:00, 7:00 and 11:00 o'clock when you are looking straight at it. TL
Nick • 12/17/2019, 2:17:43 PM Is this item still out of stock, it says available 11/30/12, but still can not order them.
Customer Service • 12/17/2019, 2:17:43 PM
Hi Nick, Unfortunately, we will no longer stock the ACE500 trimless ceiling speaker. We sincerely apologize for any inconvenience this may have caused. As an alternative, we would like to suggest the ICE520 or ACE520. These speakers offer excellent sound quality and are very affordable as well. CL/MA 1441
Matt • 12/17/2019, 2:17:43 PM What Is the R.M.S. (Continuous) Wattage And The Program Wattage and Peak Wattage
Customer Service • 12/17/2019, 2:17:43 PM
Hi Matt, Great question! Peak power is how much a speaker can handle at maximum while RMS or Continuous power is how much wattage a speaker should be receiving to produce the optimal quality of sound. In other words, you never really want to push a speaker to its peak power rating, you want to run it at RMS. BM 2682
Matt • 12/17/2019, 2:17:43 PM what is the R.M.S. rating of these speakers
Customer Service • 12/17/2019, 2:17:43 PM
Hi Matt, RMS is about 40 watts on the ACE500.
James • 12/17/2019, 2:17:43 PM When installing these speakers in the ceiling do they have to be clear of the attic insulation or OK to cover them over with it??
Customer Service • 12/17/2019, 2:17:43 PM
Hi James, Best to keep it clear as to avoid any falling onto the back end of the speaker.