BlueMusic BM-VOHU
BlueMusic Bluetooth Audio Interface User Manual
Wireless audio solution for select Volvo HU radio systems.
1. Introduction
This manual provides comprehensive instructions for the installation, operation, and maintenance of your BlueMusic BM-VOHU Bluetooth Audio Interface. This device allows for wireless audio streaming from your Bluetooth-enabled devices directly to your compatible Volvo HU radio. Please read this manual carefully before installation and use to ensure proper functionality and longevity of the device.
2. Product Overview

Image: The BlueMusic Bluetooth Audio Interface, featuring a black cable connecting an 8-pin DIN connector to a compact black module, designed for seamless integration with compatible Volvo HU radio systems.
The BlueMusic BM-VOHU Bluetooth Audio Interface is designed to enable wireless audio streaming to compatible Volvo HU radio systems. It allows for the transmission of music, navigation announcements, and other audio from Bluetooth-enabled devices directly to your car's sound system. The unit integrates seamlessly by being recognized as a CD changer by the radio, allowing for track control via the radio and steering wheel buttons.
3. Compatibility
This Bluetooth audio interface is compatible with the following Volvo HU-Radios:
- HU 401
- HU 403
- HU 405
- HU 415
- HU 555
- HU 601
- HU 603
- HU 605
- HU 611
- HU 613
- HU 615
- HU 650
- HU 655
- HU 801
- HU 803
- HU 850
- HU 1205
- CR-504
Important Note: This adapter functions by being recognized as a CD changer. If your specific radio model (e.g., HU 850 with an integrated 6-CD changer) does not provide an option to switch to an external CD changer input, this device may not be compatible. Please verify your radio's capabilities before installation.
4. Features
- Wireless music transmission via Bluetooth.
- Automatic recognition by the radio as a CD changer.
- Title control via radio and steering wheel buttons.
- Can be used in parallel with Bluetooth hands-free equipment (note: no phone calls via this adapter).
- Integrated amplifier for optimal audio output.
- Supports Bluetooth 4.1 for low power consumption.
- Integrated antenna for stable connection throughout the vehicle.
- Minimum installation effort; adapter connects to the back of the radio.
- No additional wiring required for power supply.
5. Installation Guide
Installation of the BlueMusic Bluetooth Audio Interface is designed to be straightforward, requiring access to the rear of your Volvo's head unit.
5.1 Tools Required
- Radio removal tools (specific to Volvo models, often U-shaped keys or Torx screwdrivers).
- Optional: Magnetic Torx screwdriver for easier screw handling.
5.2 Installation Steps
- Prepare the Vehicle: Ensure the vehicle's ignition is off. For safety, it is recommended to disconnect the car battery before proceeding, especially if you anticipate disconnecting climate control or other sensitive wiring. This helps prevent error codes.
- Remove the Head Unit: Carefully remove your Volvo's radio head unit from the dashboard. This typically involves inserting radio removal tools into the designated slots or unscrewing retaining screws. Refer to your vehicle's specific service manual or online resources for detailed instructions on head unit removal for your Volvo model.
- Locate the CD Changer Input: On the rear of the head unit, locate the 8-pin DIN socket. This is typically labeled for an external CD changer.
- Connect the Bluetooth Interface: Plug the 8-pin DIN connector of the BlueMusic Bluetooth Audio Interface into the corresponding socket on the back of your radio. The connector may appear to be inserted "upside down" with the cable pointing upwards; this is normal and helps route the cable away from obstructions when reinserting the head unit.
- Route the Cable: Carefully route the cable and the small module of the Bluetooth interface to a suitable, hidden location behind the dashboard. Ensure it does not interfere with any moving parts or get pinched.
- Reinstall the Head Unit: Gently slide the head unit back into its position in the dashboard, ensuring all wires are clear and not pinched. Secure it with the retaining screws or clips.
- Reconnect Battery (if disconnected): Reconnect the car battery if you disconnected it in step 1.
- Test Functionality: Turn on your vehicle's ignition and the radio.
Caution: Be extremely careful not to disconnect climate control or other critical wiring during head unit removal, as this can trigger warning codes that may require specialized tools to clear.
6. Operating Instructions
- Power On: Turn on your Volvo's radio.
- Select Source: Press the "Source" or "CD Changer" button on your radio until the CD changer input is selected. The radio will automatically recognize the BlueMusic interface.
- Pairing:
- On your mobile device (smartphone, tablet, etc.), enable Bluetooth.
- Search for available Bluetooth devices. The BlueMusic interface will appear as "BlueMagic" or similar.
- Select "BlueMagic" to pair. No PIN is typically required.
- Once paired, your device will connect automatically when the radio is set to the CD changer source and Bluetooth is enabled on your device.
- Audio Playback: Begin playing audio from your preferred music app, navigation app, or other source on your paired device. The audio will be transmitted wirelessly to your Volvo's sound system.
- Track Control: Use the track forward/backward buttons on your radio or steering wheel to control playback (skip tracks) within most standard music applications.
- Volume Control: Adjust the volume using your radio's volume knob or steering wheel controls. For optimal sound quality, it is recommended to set the volume on your mobile device to maximum.
- Automatic Disconnection/Reconnection: The Bluetooth unit will turn off when you change the radio source away from the CD changer input and will automatically reconnect when you select the CD changer source again. This also prevents battery drain when the unit is not in use.
7. Maintenance
The BlueMusic Bluetooth Audio Interface is designed for long-term, maintenance-free operation once installed. No regular user maintenance is required.
- Cleaning: As the device is installed behind the radio, it does not require external cleaning.
- Software Updates: The manufacturer does not specify user-installable software updates for this device.
- Storage: If the device is removed from the vehicle, store it in a dry, cool place away from direct sunlight and extreme temperatures.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No audio output. |
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| Cannot pair with device. |
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| Track control buttons do not work. |
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| Radio displays error or does not recognize CD changer. |
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9. Specifications
| Attribute | Detail |
|---|---|
| Brand | BlueMusic |
| Model Number | BM-VOHU |
| Connectivity Technology | Bluetooth 4.1 |
| Compatible Devices | Volvo HU Radios (401, 403, 405, 415, 555, 601, 603, 605, 611, 613, 615, 650, 655, 801, 803, 850, 1205, CR-504) |
| Connector Type | 8-pin DIN (CD Changer Input) |
| Audio Output Mode | Stereo |
| Output Power | 50 Watts |
| Colour | Black |
| Package Dimensions | 15.1 x 10.1 x 1.9 cm |
| Item Weight | 40 g |
| Country of Origin | China |
10. Warranty and Support
Specific warranty details for the BlueMusic Bluetooth Audio Interface are not provided in the product information. For warranty claims or technical support, please contact the retailer or manufacturer directly.
Manufacturer: BlueMusic
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