1. Introduction
This manual provides comprehensive instructions for the installation, operation, and maintenance of your Herdio 6.5 Inch Bluetooth Ceiling Speakers. These speakers are designed for flush mounting in ceilings or walls, offering crystal clear sound and convenient wireless connectivity for various audio applications.
The system includes a digital amplifier box with true wireless technology, allowing seamless audio streaming from your Bluetooth-enabled devices. Its flush mount design and paintable grill ensure a subtle integration into any home or office environment.
2. Safety Information
- Ensure all power is disconnected before installation or maintenance.
- Installation should be performed by a qualified professional if you are unsure about electrical wiring.
- Do not expose the amplifier or speakers to moisture or extreme temperatures.
- Use only the provided power adapter and connection wires.
- Keep out of reach of children.
3. Package Contents
Verify that all items listed below are included in your package:
- 2 x 6.5-inch Passive Speakers
- 1 x Amplifier Box
- 1 x Power Adapter
- 2 x Speaker Connection Wires
- 1 x User Manual (this document)

Image: Contents of the Herdio 6.5 Inch Bluetooth Ceiling Speakers package. It shows two white circular ceiling speakers, a black amplifier box, a power adapter, and two red and black speaker wires, along with a small user manual.
4. Specifications
| Feature | Description |
|---|---|
| Brand | Herdio |
| Model Name | Flsuh Mount (Herdio HCS628BT) |
| Speaker Type | Surround Sound |
| Special Feature | Multi Room Audio |
| Connectivity Technology | Bluetooth |
| Speaker Size | 6.5 Inches |
| Maximum Output Power | 300 Watts |
| Product Dimensions | 3.15"D x 7.5"W x 7.5"H |
| Cut-out Diameter | 6.3 inches (16 cm) |
| Mounting Depth | 3.15 inches (8 cm) |
| Material | Acrylonitrile Butadiene Styrene (ABS) |
| Color | White |
| Item Weight | 5.08 pounds (2.31 kg) |

Image: Diagram illustrating the installation dimensions of the speaker, showing a total speaker diameter of 7.5 inches (16.5 cm), a cut-out diameter of 6.3 inches (16.5 cm), and a mounting depth of 3.15 inches (8 cm).
5. Setup and Installation
5.1 Planning Your Installation
Before beginning installation, determine the optimal placement for your speakers to ensure balanced sound distribution. Consider the room acoustics and proximity to power outlets for the amplifier.
5.2 Required Tools (Not Included)
- Drill
- Hole Saw (matching cut-out diameter)
- Wire Strippers
- Screwdriver
- Measuring Tape
- Pencil
5.3 Installation Steps
- Mark and Cut the Opening: Using the provided template or the specified cut-out diameter (6.3 inches / 16 cm), mark the desired location on your ceiling or wall. Carefully cut the opening using a hole saw.
- Run Speaker Wires: Route the speaker wires from the amplifier location to each speaker opening. Ensure sufficient length for connections.
- Connect Speakers: Connect the speaker wires to the spring-loaded terminals on the back of each speaker. Ensure correct polarity (red to red, black to black).
- Mount Speakers: Insert the speaker into the cut-out opening. The flush mount design with spring clips will secure the speaker in place.
- Connect Amplifier: Connect the other end of the speaker wires to the amplifier box's speaker output terminals. Connect the power adapter to the amplifier's power jack and then to a power outlet.
- Power On: Once all connections are secure, plug in the power adapter to power on the amplifier.

Image: Wiring diagram for the Herdio ceiling speakers. It illustrates how the power supply connects to the amplifier box, and how the amplifier box connects to two ceiling speakers. A smartphone icon indicates Bluetooth connection to the amplifier.
6. Operating Instructions
6.1 Bluetooth Pairing
- Ensure the amplifier is powered on. The Bluetooth indicator light on the amplifier will typically blink, indicating it's in pairing mode.
- On your Bluetooth-enabled device (smartphone, tablet, etc.), go to the Bluetooth settings.
- Search for available devices. The amplifier will appear as "Herdio HCS628BT" or similar.
- Select the device to pair. Once connected, the indicator light on the amplifier will become solid.
- You can now play audio from your device through the ceiling speakers.

Image: A smartphone screen displaying Bluetooth connection settings, with a Bluetooth icon and the word "BLUETOOTH" indicating active connection. A Herdio ceiling speaker is shown in the background, emphasizing wireless connectivity.
6.2 Audio Playback
Control volume and playback directly from your paired Bluetooth device. The speakers will reproduce audio from any application on your device.
7. Maintenance
- Cleaning: Use a soft, dry cloth to wipe the speaker grills and amplifier. Do not use abrasive cleaners or solvents.
- Grill Painting: The speaker grills are stain-resistant and can be painted to match your ceiling color. Ensure the paint is thin and does not clog the grill holes, which could affect sound quality.
- General Care: Avoid placing heavy objects on the amplifier or speakers. Ensure proper ventilation for the amplifier.

Image: A close-up view of the Herdio ceiling speaker, highlighting its paintable aluminum grill and the ABS eco-friendly material used in its construction.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No Sound | Power not connected; Speaker wires loose; Bluetooth not paired. | Check power connection; Re-secure speaker wires; Re-pair Bluetooth device. |
| Poor Sound Quality / Distortion | Incorrect wiring polarity; Volume too high; Source audio quality is low. | Verify speaker wire polarity; Reduce volume; Test with a different audio source. |
| Bluetooth Disconnects Frequently | Device too far from amplifier; Interference from other devices. | Move device closer to amplifier (max range 40 meters); Reduce interference by moving other wireless devices. |
| Speaker not fitting in cut-out | Cut-out hole is too small. | Carefully enlarge the cut-out hole to the specified 6.3 inches (16 cm) diameter. |
9. Warranty and Support
Herdio products come with a limited warranty. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official Herdio website. For technical support or further assistance, please contact Herdio customer service through their official channels.
You can find more information and contact details on the Herdio Store on Amazon.





