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Purchase OSD Audio ACE640TT 6.5" Stereo DVC Trimless In-Ceiling Speaker, 120W, White (Single)
  • ace640tt
  • In-Ceiling Speaker

  • ACE640TT 6.5" Stereo DVC Trimless In-Ceiling Speaker, 120W, Paintable Magnetic Grill, White

  • $87.19
    6.5" Dual Tweeter 120W
    • Stereo sound from one speaker, dual voice coil
    • Retrofit install, no construction bracket needed
    • Dual titanium tweeters, paintable magnetic grille
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Specifications

SKU
ACE640TT
  • Model: ACE640TT
  • Speaker Type: 6.5" DVC Dual Tweeter Trimless Ceiling Speaker
  • Woofer: 6.5" Fiber Glass Cone, Dual Voice Coil
  • Tweeter: Dual 0.5" Titanium Coated Dome
  • Frequency Response: 45Hz - 20kHz
  • Power Handling: 120W
  • Sensitivity: 89 dB
  • Impedance: 8 Ohms
  • Inputs Spring Loaded Binding Posts (Left / Right)
  • Installation Brackets Install-friendly Dog Ear Installation Brackets
  • Grille Spray Paintable Magnetic Grille Included
  • Color: White
  • Diameter & Depth: 8.86" x 3.54"
  • Cutout Diameter: 7.80"
  • Sold As Single
  • Warranty: 10 Years

Description

The OSD Audio ACE640TT gives you smooth, two-channel stereo sound from a single 6.5" trimless in-ceiling speaker. It takes up half the space of a standard speaker pair, which makes it the right fit for whole-house audio in rooms that have a stereo signal but space for only one speaker.

  • STEREO FROM ONE SPEAKER: The dual voice coil woofer plays both left and right channels through one cone, so you get full two-channel sound where only one speaker fits - with half the cutouts of a standard pair.
  • MADE FOR TIGHT SPACES: Ideal for bathrooms, hallways, closets, laundry rooms and small bedrooms in a whole-house audio system - any room with a stereo signal but room for just one ceiling speaker.
  • DUAL TWEETER DESIGN: A 6.5" fiberglass cone woofer works with dual 1/2" titanium-coated dome tweeters, one per channel, for smooth, balanced sound. 45Hz - 20kHz, 89 dB sensitivity, 120W power handling.
  • TRIMLESS MAGNETIC GRILL: The micro-flange grill is held on by strong magnets and sits flush to the ceiling for a clean look. Spray paint it to match the room and the speaker blends in with recessed lighting.
  • SIMPLE INSTALL: Spring-loaded binding posts for the left and right inputs, plus a dog-leg mounting system built into the frame. 7.80" cutout, 8.86" diameter, 3.54" depth. Sold as a single passive 8-ohm speaker with grill.
  • WARRANTY: Backed by OSD Audio's 10-year warranty.

The secret is the dual voice coil (DVC) woofer. Two voice coils - one for the left channel and one for the right - drive a single 6.5" fiberglass cone, while dual 1/2" titanium-coated dome tweeters handle the highs for each channel. You hear both sides of the music from one spot in the ceiling, without needing a second hole.

Use the ACE640TT in bathrooms, hallways, closets, laundry rooms, small bedrooms and offices. Frequency response is 45Hz - 20kHz, sensitivity is 89 dB and power handling is rated at 120W. Connect the left and right channels from any stereo amplifier, receiver or multi-zone system that drives 8-ohm speakers.

Like the rest of the Architectural Ceiling Element (ACE) series, the ACE640TT is trimless: a micro-flange grill is held on by strong magnets and sits close to the ceiling for a clean, flush look. The grill is spray paintable to match any ceiling.

Installation is straightforward. Cut a 7.80" hole, connect the left and right speaker wires to the spring-loaded binding posts, set the speaker in place and tighten the front screws to lock the built-in dog-leg brackets. The speaker measures 8.86" in diameter with 3.54" of mounting depth.

Sold as a single speaker with a spray-paintable magnetic grill. Passive - an amplifier or receiver is required. Backed by OSD Audio's 10-year warranty.

FAQ

Do I need an amplifier?

Yes. The ACE640TT is a passive 8-ohm speaker. Connect it to any stereo amplifier, AV receiver or multi-zone system that drives 8-ohm speakers.

What size hole do I cut?

Cut a 7.80" hole. The speaker measures 8.86" x 3.54" (diameter x mounting depth).

Can I paint the grill?

Yes. The white magnetic grill is spray paintable to match your ceiling.

Can one speaker really play stereo?

Yes. The dual voice coil woofer and dual tweeters play the left and right channels from one speaker. Connect both channels to the left and right inputs.


Warning: California's Proposition 65
Warning:  

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 www.P65Warnings.ca.gov.

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Questions & Answers

4 Questions asked

What's on your mind?

Johan van Lierop • 12/17/2019, 2:17:43 PM I bought this speaker and have only a single wire running in the ceiling. Can you please tell me how to wire the 2 sets (2-channel?) connectors with one cable? Do i discard one of them or do i bridge them? If the latter, please advice on how to connect + and -. Thank you, Johan van Lierop
Customer Service • 12/17/2019, 2:17:43 PM
Well you can jump the cable from one set of inputs to the other, but it won't be running in stereo. It would just be playing one-channel off both inputs.
bill • 12/17/2019, 2:17:43 PM why do these speakers have 2 places to connect speaker wires t them
Customer Service • 12/17/2019, 2:17:43 PM
Hi Bill: These speakers were created specifically for an application where you have a right (+/-) and left (+/-) stereo signal coming into a room where you only have space for a single speaker. So you would connect one pair of conductors to one set of inputs (+/-) and the second pair of conductors to the second set of inputs. Note: If you have a four conductor wire coming tot the speaker then connect the red wire to the positive and black wire to the negative. The n connect the white wire to the second + input and the green wire to the second negative input. This will give you a summed mono single stereo full range signal. You will also notice a switch that is labeled 8/16 ohm. If you connect both voice coils (the two inputs +/-) you will need to make sure the switch is set to 16 ohms. These speaker are Dual Voice Coil, with Dual Tweeters and have dual Application switch (8 or 16 ohm). The switch allows you to connect a pair of these speakers one for the right and the other for left channel, you would just connect one set of inputs for each speaker.The switch would be set at 8 ohm. Whether the switch is at 8 ohms or 16 ohms both tweeters play at the same time. So the advantage is when you use these as a stereo pair you increase the high frequency dispersion with the two tweeters per speaker. See the image that shows how to wire for either 8 or 16 ohms depending on your application. TL/3768
Michael Panepento • 12/17/2019, 2:17:43 PM I have a large area 20 x 20 & would like to use 4 -640TT speakers to cover it. How would I wire them so that they are all connected to the same stereo amplifier with the correct ohm's? I have already pulled 4- conductor wire to the first speaker location. How do I wire them from there? paralell or in series?
Customer Service • 12/17/2019, 2:17:43 PM
Hi Michael: You would want to wire these in Series-Parallel. You will need two conductor cable where you will only be using a single conductor. The result will be an 8-ohm load. Your power handling will go up, distortion will go down, and your sensitivity will be around 92 to 94 dB. I am sending you a drawing in a separate email. Attach to our outgoing mail gives me an error message. So you will see this email twice but the second will have an actual diagram using half the two conductor cable to wire all four speakers together. And it starts with your four conductors. Good luck TL/5481
Kevin • 05/25/2026, 1:19:30 PM What is the actual cutout dimension for the 6.5”.
Customer Service • 05/28/2026, 2:03:11 PM
Hi Kevin: The cutout diameter is listed as 7.80." TimL/OSD Tech Support