1. Introduction
This manual provides detailed instructions for the safe and efficient operation of your SDRD SD309 Home Theater KTV Wireless Bluetooth Speaker. Please read this manual thoroughly before using the product and retain it for future reference.
The SDRD SD309 is a versatile audio system designed for home entertainment, offering high-fidelity sound, KTV karaoke functionality with dual wireless microphones, and multiple connectivity options including Bluetooth, AUX, USB, and TF card. It can be connected to TVs, computers, mobile phones, and tablets.
2. Package Contents
Please check the package carefully to ensure all items are present:
- SDRD SD309 Bluetooth Speaker × 1
- Wireless Microphones × 2
- Charging Cable (USB) × 1
- Audio Cable (AV to 3.5mm) × 1
- User Manual × 1
3. Product Overview and Controls
Familiarize yourself with the main components and controls of your SDRD SD309 speaker and microphones.
Speaker Button Functions:
- Power Button: Long press for 3 seconds to turn on/off. Short press to play/pause.
- Volume +: Short press to increase volume. Long press for next song.
- Volume -: Short press to decrease volume. Long press for previous song.
- Mode Button: Switch between Bluetooth, AUX, TF card, and USB modes.
- LED Indicator: Blue flashing (pairing), Blue always on (connected), Red (charging).
Microphone Button Functions:
- Volume: Adjust microphone volume.
- Reverberation: Adjust echo effect.
- EQ: Equalizer settings.
- A/B Conversion Switch: For switching microphone channels.
4. Setup
4.1 Charging the Speaker
- Connect the provided USB charging cable to the speaker's charging port (USB-C / Micro USB).
- Connect the other end of the charging cable to a suitable charger (e.g., 5V-2A charger).
- The LED indicator will show a red light, indicating charging.
- The red light will turn off when the speaker is fully charged.
Charging Time: Approximately 2-3 hours for the speaker.
4.2 Charging the Wireless Microphones
- Method 1 (Direct Charging): Plug a USB charging cable into the charging port at the bottom of the microphone.
- Method 2 (Speaker Charging): When the speaker is charging, place the microphone in the designated sleeve on the speaker. The microphone will charge automatically.
Microphone Charging Time: Approximately 1-2 hours.
4.3 TV Connection
To connect the speaker to your TV for a KTV experience:
- Use the provided AV to 3.5mm audio cable.
- Connect the RCA (red and white) ends of the cable to the corresponding audio output ports on your TV.
- Connect the 3.5mm jack end of the cable to the AUX input port on the SDRD SD309 speaker.
- The speaker will automatically switch to AUX mode.
5. Operating Instructions
5.1 Power On/Off
- To Turn On: Long press the Power button on the speaker for 3 seconds.
- To Turn Off: Long press the Power button for 3 seconds again.
5.2 Bluetooth Connection
- Turn on the speaker by long pressing the Power button. The LED indicator will flash blue, indicating it's in pairing mode.
- On your mobile phone, tablet, or computer, open the Bluetooth settings.
- Search for available devices and select the speaker (usually named "SDRD" or similar).
- Once connected, the LED indicator will show a solid blue light. You can now play music and answer calls wirelessly.
5.3 AUX Mode
- Connect a 3.5mm audio cable from your device (e.g., phone, computer) to the AUX input port on the speaker.
- The speaker will automatically switch to AUX mode.
5.4 Playing from TF Card / USB Disk
- Insert a TF (Micro SD) card into the TF card slot or a USB disk into the USB port on the speaker.
- Press the Mode button to switch to the appropriate playback mode (TF or USB).
- Use the Volume +/- buttons (short press) for track navigation and the Power button (short press) for play/pause.
5.5 KTV Karaoke Function
To use the KTV function with the wireless microphones:
- Ensure the speaker is powered on and connected to an audio source (e.g., TV via AUX, phone via Bluetooth) playing karaoke tracks.
- Turn on the wireless microphones. They should automatically pair with the speaker.
- Adjust the microphone's volume, reverberation (echo), and EQ settings using the controls on the microphone itself.
- The speaker supports "one button elimination" for vocals, allowing you to sing along to instrumental versions of songs.
Video 5.1: Demonstration of the SDRD SD309 KTV speaker with wireless microphones.
6. Specifications
| Feature | Specification |
|---|---|
| Product Name | Portable Bluetooth Speaker |
| Brand | SDRD (QIQIZHU) |
| Model | SD309 / SD301 |
| Output Power | 20W (Speaker), 40W (Output Voltage) |
| PMPO | 250W |
| Input Power | 100-199 W |
| Speaker Size | 4 inches external magnetic |
| Speaker Dimensions | 290 x 148 x 125mm (Product size: 29*15*16cm) |
| Speaker Battery | Built-in 18650 1800mAh 7.4V Lithium Battery |
| Speaker Play Time | 2-3 hours |
| Speaker Charging Time | 3-4 hours |
| Microphone Battery | Built-in 18650 1500mAh 3.7V |
| Microphone Charging Time | 1-2 hours |
| Bluetooth Version | 5.0 (Jerry Bluetooth 4.2) |
| Bluetooth Distance | 10 meters |
| Microphone Solution | BK U band |
| Microphone Type | Single-point capacitive |
| Frequency Range | 100Hz-20KHz |
| Impedance | 4-6 Ohm |
| Communication | AUX, USB, Bluetooth, Audio Line |
| Charging Port | USB-C / Micro USB (5V-2A charger) |
| Power Source | Battery, USB |
| Material | ABS Plastic (Cabinet Material: Plastic) |
| Sound Mode | 3D Surround Sound Mode, Stereo Sound Mode, Live Sound Mode, Standard Mode |
| Features | Phone Function, Dolby Digital, Play Video, Remote Control, Built-in Microphone, Support APP, Support Apt-x, Support Memory Card |
| Net Weight | 1.7755 KG |
7. Maintenance
- Cleaning: Use a soft, dry cloth to clean the speaker and microphones. Do not use abrasive cleaners or solvents.
- Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Charge the device regularly, even if not in use for extended periods.
- Avoid Moisture: Do not expose the speaker to water or excessive humidity. It is not waterproof.
- Handle with Care: Avoid dropping or subjecting the device to strong impacts.
8. Troubleshooting
| Problem | Solution |
|---|---|
| Cannot connect Bluetooth | Restart the speaker and your phone/device, then attempt to reconnect. Ensure the speaker is in pairing mode (blue LED flashing). |
| No sound | Check the volume levels on both the speaker and your connected device. Ensure the correct input mode (Bluetooth, AUX, TF, USB) is selected. |
| Battery runs out fast | Ensure the speaker is fully charged before use. Lower the volume during operation to conserve battery life. |
9. User Tips
- Sound Quality: Users have noted clear sound output from the speaker, making it suitable for both music playback and karaoke.
- Connectivity: The speaker offers multiple ways to connect, including Bluetooth, AUX, TF card, and USB, providing flexibility for various devices and uses.
- Microphone Usage: Take advantage of the dual wireless microphones for an immersive karaoke experience. Experiment with the reverberation and EQ settings on the microphones to find your preferred vocal effect.
- Charging Port: The speaker supports both USB-C and Micro USB for charging, offering convenience with common cable types.
10. Safety Instructions & Warnings
WARNING: Risk of fire, explosion, and burns.
Small parts are included. Keep away from children under 3 years old to prevent choking risk.
- Do not disassemble, puncture, or throw the battery into fire.
- Do not use the speaker in high temperature, humid, or dusty environments.
- Do not play at maximum volume for a long time to avoid hearing damage.
- Keep the speaker away from children under 3 years old to prevent choking hazard.
- Stop using immediately if there is overheating, smoke, or abnormal smell.
11. Warranty & Support
Warranty: 3 months from the date of purchase.
After-Sales Service Email: support@123.com
For any issues or questions not covered in this manual, please contact our customer support team via the provided email address.