Lenco BT-300BK
Lenco BT-300 Bluetooth Speaker User Manual
Model: BT-300BK
Product Overview
The Lenco BT-300 is a stereo Bluetooth speaker designed for portable audio playback. It features a robust wooden housing for enhanced sound quality and offers both wireless Bluetooth connectivity and a wired AUX-in option. With an integrated rechargeable battery, it provides extended playback time, making it suitable for various indoor and outdoor settings.

Figure 1: Front view of the Lenco BT-300 Bluetooth Speaker in black finish.
Package Contents
Before beginning, please ensure all items are present in the package:
- Lenco BT-300 Bluetooth Speaker
- Power Adapter
- User Manual (this document)
Setup
1. Charging the Battery
The Lenco BT-300 features an integrated 1500mAh Lithium-Ion battery. Before first use, it is recommended to fully charge the speaker. Connect the supplied power adapter to the DC IN port on the speaker and plug it into a standard wall outlet. The charging indicator light will show the charging status.
2. Powering On/Off
Locate the power switch on the top panel of the speaker. Flip the switch to the 'ON' position to power on the device. Flip it to the 'OFF' position to power off.

Figure 2: Top panel with power switch, input selector, bass, treble, and volume controls.
Operating Instructions
1. Bluetooth Connection
The Lenco BT-300 is equipped with Bluetooth 4.1 for wireless audio streaming. To connect your device:
- Ensure the speaker is powered on and in Bluetooth mode. The Bluetooth indicator light will blink, indicating it is ready for pairing.
- On your mobile device (smartphone, tablet, computer), enable Bluetooth and search for available devices.
- Select "Lenco BT-300" from the list of found devices.
- Once connected, the Bluetooth indicator light will become solid, and you can begin playing audio wirelessly.
2. AUX-in Connection
For devices without Bluetooth capability, you can use the 3.5mm AUX-in port:
- Connect one end of a 3.5mm audio cable (not included) to the AUX-in port on the speaker.
- Connect the other end of the cable to the headphone jack or audio output of your external device.
- Ensure the speaker is switched to AUX mode if there is an input selector.
- Play audio from your external device.
3. Adjusting Audio Settings
The Lenco BT-300 features dedicated controls for sound adjustment:
- Volume Knob: Rotate clockwise to increase volume, counter-clockwise to decrease.
- Bass Knob: Adjusts the low-frequency output. Rotate to increase or decrease bass levels.
- Treble Knob: Adjusts the high-frequency output. Rotate to increase or decrease treble levels.

Figure 3: The Lenco BT-300 speaker with its approximate dimensions: 32.31 cm (length) x 13.69 cm (width) x 18 cm (height).
Maintenance
To ensure the longevity and optimal performance of your Lenco BT-300 speaker, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to wipe the exterior of the speaker. Avoid using abrasive cleaners, solvents, or strong chemicals, as they may damage the finish.
- Storage: When not in use for extended periods, store the speaker in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To maintain battery health, avoid fully discharging the battery frequently. If storing for a long time, charge the battery to approximately 50% every few months.
- Handling: Handle the speaker with care. Avoid dropping it or subjecting it to strong impacts, which can damage internal components.
Troubleshooting
If you encounter issues with your Lenco BT-300 speaker, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Battery is depleted; Power adapter not connected or faulty. | Charge the speaker using the supplied power adapter. Ensure the power adapter is securely connected to both the speaker and a working power outlet. |
| No sound | Volume too low; Incorrect input mode selected; Device not paired (Bluetooth); Audio cable not connected properly (AUX-in). | Increase the volume on both the speaker and the connected device. Ensure the correct input mode (Bluetooth/AUX) is selected. For Bluetooth, re-pair the device. For AUX, check cable connections. |
| Poor sound quality / Distortion | Volume too high; Bass/Treble settings incorrect; Bluetooth interference; Low battery. | Reduce the volume on both the speaker and the connected device. Adjust the Bass and Treble knobs. Move the speaker closer to the Bluetooth device or away from other electronic devices. Charge the battery. |
| Bluetooth connection unstable | Device too far from speaker; Obstacles between devices; Interference from other wireless devices. | Ensure the Bluetooth device is within the effective range (typically 10 meters) and there are no major obstructions. Turn off other Bluetooth devices that are not in use. |
Specifications
| Feature | Detail |
|---|---|
| Model Number | BT-300BK |
| Brand | Lenco |
| Connectivity Technology | Bluetooth (Bluetooth 4.1) |
| Audio Output Mode | Stereo |
| Maximum Speaker Output Power | 2 x 10 Watt RMS |
| Battery Type | 1 Lithium-Ion battery (included) |
| Battery Capacity | 1500mAh |
| Battery Life (approx.) | Up to 8 hours at 50% volume |
| Product Dimensions (L x W x H) | 32.31 x 13.69 x 18 cm |
| Product Weight | 2.01 Kilograms |
| Mounting Type | Tabletop |
| Controller Type | Knob |
Warranty and Support
For warranty information and technical support, please refer to the documentation included with your product or visit the official Lenco website. Keep your proof of purchase for warranty claims.
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