1. Introduction
Thank you for purchasing the Earldom ET-M22 Bluetooth Receiver. This device allows you to wirelessly stream audio from your Bluetooth-enabled smartphone, tablet, or computer to any audio system with a 3.5mm auxiliary input. Enjoy high-quality audio without the need for cables.
Figure 1: Earldom ET-M22 Bluetooth Receiver in its retail packaging, showing "V2.1 Wireless+EDR" and "Music Receiver".
2. Product Overview
The Earldom ET-M22 is a compact Bluetooth audio receiver designed for ease of use. It features a standard USB-A connector for power and a 3.5mm audio output jack for connecting to your audio system.
2.1 Package Contents
- Earldom ET-M22 Bluetooth Receiver
- 3.5mm Audio Cable (if included, typically a short one)
- User Manual (this document)
2.2 Device Layout
Figure 2: The Earldom ET-M22 Bluetooth Receiver showing its USB power input and 3.5mm audio output, with illustrations of connections to a car stereo, TV, and laptop.
As shown in Figure 2, the receiver has a USB connector for power and a 3.5mm audio jack for output. There are no visible buttons, indicating a plug-and-play operation for power and automatic pairing mode activation.
3. Setup
Follow these steps to set up your Earldom ET-M22 Bluetooth Receiver:
- Power Connection: Insert the USB-A connector of the ET-M22 into a powered USB port. This can be a USB port in your car, on a wall adapter (5V USB charger), a computer, or a speaker system. The device will power on automatically.
- Audio Connection: Connect one end of the 3.5mm audio cable (often included) to the 3.5mm audio output jack on the ET-M22.
- Connect to Audio System: Connect the other end of the 3.5mm audio cable to the auxiliary (AUX) input of your car stereo, home speaker system, headphones, or any other audio device you wish to make Bluetooth-enabled.
- Select AUX Input: On your audio system, select the AUX input source.
Figure 3: Examples of the Earldom ET-M22 connected to a desktop computer, a speaker system, and a car's USB port, demonstrating its versatility.
4. Operating Instructions
4.1 Pairing with a Bluetooth Device
Once the ET-M22 is powered on and connected to your audio system, it will automatically enter pairing mode. A small LED indicator (if present, typically blue or red) may flash to indicate pairing mode.
- Ensure the ET-M22 is powered on and connected to your audio system's AUX input.
- On your smartphone, tablet, or other Bluetooth-enabled device, go to the Bluetooth settings menu.
- Enable Bluetooth and scan for available devices.
- Locate and select "ET-M22" (or a similar name like "Earldom Receiver") from the list of devices.
- Once connected, the LED indicator on the ET-M22 may change to a solid light or flash slower, indicating a successful connection.
4.2 Playing Audio
After successful pairing, any audio played on your connected Bluetooth device will be streamed wirelessly to the Earldom ET-M22 and output through your connected audio system.
- Adjust the volume on your connected Bluetooth device and/or your audio system.
- Control playback (play, pause, skip tracks) directly from your Bluetooth device.
5. Maintenance
To ensure the longevity and optimal performance of your Earldom ET-M22 Bluetooth Receiver, follow these simple maintenance guidelines:
- Cleaning: Use a soft, dry cloth to wipe the device. Do not use liquid cleaners or abrasive materials.
- Storage: When not in use, store the device in a cool, dry place away from direct sunlight and extreme temperatures.
- Avoid Moisture: Keep the device away from water and high humidity.
- Handle with Care: Avoid dropping or subjecting the device to strong impacts.
6. Troubleshooting
If you encounter issues with your Earldom ET-M22, please refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No power/Device not turning on | Not properly connected to a power source. | Ensure the USB connector is fully inserted into a working USB port. Try a different USB port or power adapter. |
| Cannot pair with Bluetooth device | Bluetooth on source device is off or already connected to another device. ET-M22 is not in pairing mode. |
|
| No sound after pairing | Incorrect audio input selected on the audio system. Volume too low. Loose 3.5mm cable connection. |
|
| Intermittent audio or poor sound quality | Interference. Device too far from the receiver. Low battery on source device. |
|
7. Specifications
| Model: | ET-M22 |
| Brand: | Earldom |
| Type: | Bluetooth Audio Receiver / Multimedia Player |
| Bluetooth Version: | V2.1 + EDR (Enhanced Data Rate) |
| Power Input: | USB-A (5V DC) |
| Audio Output: | 3.5mm Stereo Jack |
| Dimensions (Shipping): | 16.1 x 7.3 x 1.6 cm |
| Weight (Shipping): | 30 grams |
8. Warranty and Support
Earldom products are designed for reliability and performance. For specific warranty information, please refer to the warranty card included with your purchase or contact your retailer. If you require technical support or have questions not covered in this manual, please reach out to the point of purchase or the official Earldom customer service channels.
Please retain your proof of purchase for warranty claims.