Introduction
Thank you for choosing the OSD ACE800 In-Ceiling Speaker Pair. These speakers are designed to provide high-quality audio performance with a discreet, trimless aesthetic, seamlessly blending into your home environment. This manual provides essential information for the proper installation, operation, and maintenance of your speakers to ensure optimal performance and longevity.
Key features of your ACE800 speakers include:
- Trimless Design: A very thin bezel line for a nearly invisible appearance.
- Magnetic Grille: Easily attachable and flush-mounted grilles that can be painted to match your decor.
- High Power Handling: Capable of handling up to 120 watts for robust sound.
- Pivoting Tweeter: A 1-inch PEI dome tweeter that can be directed to optimize sound delivery.
- Polypropylene Woofer: An 8-inch polypropylene cone woofer for clear and powerful bass.

Image: OSD ACE Series Trimless Speakers. This image showcases the sleek, trimless design of the speakers, highlighting their ability to blend into any room.
Setup and Installation
Proper installation is crucial for the best performance of your OSD ACE800 speakers. Please follow these steps carefully.
1. Planning and Placement
Determine the ideal location for your in-ceiling speakers. For optimal sound dispersion, consider placing them equidistant from the primary listening area. Ensure there are no obstructions within the ceiling space, such as electrical wires, plumbing, or structural beams.
2. Cutting the Opening
Use the provided template (if included, or refer to the speaker's cutout dimensions) to mark the circular opening on your ceiling. Carefully cut the hole using a drywall saw or rotary tool. The cutout diameter for the ACE800 is approximately 9.5 inches (24.13 cm).

Image: Speaker installation diagram. This diagram illustrates the process of installing the speaker into the ceiling opening.
3. Wiring the Speakers
Run high-quality speaker wire (e.g., 12 or 14 gauge) from your amplifier or receiver to the speaker locations. Ensure proper polarity (+ to + and - to -) when connecting the wires to both the speaker terminals and your audio equipment. The ACE800 speakers have spring-loaded terminals for easy connection.

Image: Rear view of the OSD ACE800 speaker. This image shows the speaker's rear, including the spring-loaded terminals for connecting speaker wires.

Image: Speaker cable. A roll of speaker cable, illustrating the type of wiring required for installation.
4. Mounting the Speakers
Once wired, insert the speaker into the cutout. The speaker features dog-ear clamps that will secure it to the drywall. Tighten the screws on the front baffle of the speaker. As you tighten, the clamps will pivot outwards and firmly grip the ceiling material. Do not overtighten.

Image: OSD ACE800 speaker with mounting clamps. This view highlights the robust mounting clamps that secure the speaker firmly in the ceiling.
5. Attaching the Grille
The ACE800 features a magnetic grille. Simply align the grille with the speaker baffle, and the powerful magnets will snap it into place, creating a flush and trimless appearance. The grille can be spray painted to match your ceiling color for complete visual integration.

Image: OSD ACE800 speaker with its magnetic grille detached. This shows the speaker's main components and the separate grille.

Image: Close-up of the trimless speaker edge. This detail highlights the minimal bezel for a seamless integration into the ceiling.
Operating Your Speakers
Once installed, your OSD ACE800 speakers are ready for use. Connect them to a compatible amplifier or home theater receiver to enjoy high-fidelity audio.
Adjusting the Pivoting Tweeter
The 1-inch PEI dome tweeter on your ACE800 speakers can be pivoted to direct sound towards your primary listening area. Gently push the edge of the tweeter to angle it as desired. This feature allows you to fine-tune the soundstage for optimal clarity and imaging, especially in rooms where direct speaker aiming is not possible.

Image: Close-up of the OSD ACE800 tweeter. This image provides a detailed view of the pivoting tweeter mechanism.
Power Handling
The ACE800 speakers are designed to handle up to 120 watts of power. Ensure your amplifier's output does not exceed this rating to prevent damage to the speakers. Always start with a low volume and gradually increase it to a comfortable listening level.
Maintenance
Your OSD ACE800 speakers require minimal maintenance to keep them performing optimally and looking great.
Cleaning
To clean the grilles and speaker frames, use a soft, dry cloth. For stubborn dust or light smudges, a slightly damp cloth can be used, but ensure no moisture enters the speaker components. Avoid using harsh chemicals or abrasive cleaners, as these can damage the finish or speaker materials.
Painting the Grille
The magnetic grilles are paintable. If you wish to match them to your ceiling color, use a fine-mist spray paint. Apply several thin coats rather than one thick coat to avoid clogging the grille perforations, which could affect sound quality. Allow each coat to dry completely before applying the next.
Troubleshooting
If you encounter any issues with your OSD ACE800 speakers, refer to the following common troubleshooting steps:
- No Sound:
- Check all speaker wire connections at both the speaker and the amplifier/receiver. Ensure proper polarity.
- Verify that the amplifier/receiver is powered on and set to the correct input source.
- Test with another audio source or speaker to isolate the problem.
- Distorted Sound:
- Reduce the volume level on your amplifier/receiver. Overdriving the speakers can cause distortion.
- Check speaker wire connections for loose strands or short circuits.
- Ensure the amplifier's power output does not exceed the speaker's maximum power handling.
- Uneven Sound or Poor Imaging:
- Adjust the pivoting tweeter on each speaker to direct sound towards your listening position.
- Verify that both speakers are wired with correct polarity. Reversed polarity on one speaker can cause phase issues.
If the problem persists after trying these steps, please contact OSD Audio customer support for further assistance.
Specifications
| Feature | Detail |
|---|---|
| Model Name | FBA-ACE800 |
| Speaker Type | In-Ceiling |
| Woofer Diameter | 8 Inches (Polypropylene Cone) |
| Tweeter Diameter | 1 Inch (PEI Dome, Pivoting) |
| Speaker Maximum Output Power | 120 Watts |
| Impedance | 8 Ohm |
| Product Dimensions (D x W x H) | 10.79"D x 10.79"W x 4.41"H |
| Item Weight | 0.01 Ounces (per speaker) |
| Mounting Type | Ceiling Mount |
| Included Components | Pair of Speakers |
| Connectivity Technology | Speaker Wire |
| UPC | 810281014906 |
Warranty Information
OSD Audio products, including the ACE800 In-Ceiling Speaker Pair, typically come with a Limited Warranty. This warranty covers defects in materials and workmanship under normal use. The specific terms and duration of the warranty may vary. Please retain your proof of purchase for warranty claims.
For detailed warranty terms and conditions, please refer to the official OSD Audio website or contact their customer support directly.
Customer Support
If you require further assistance, have questions not covered in this manual, or need to inquire about warranty service, please contact OSD Audio customer support.
You can often find support contact information, FAQs, and additional resources on the official OSD Audio website. For product-specific information, you may also visit the OSD Audio Store on Amazon.





