1. Introduction
Thank you for purchasing the Technical Pro 12-Inch Rechargeable Bluetooth LED Speaker. This portable PA system is designed to deliver powerful audio with versatile connectivity options, including Bluetooth, USB, and SD card inputs. It features a built-in rechargeable battery for portability and integrated LED lights for enhanced ambiance. This manual provides essential information for safe operation, setup, and maintenance of your speaker.
2. Safety Information
- Read all instructions carefully before using the speaker.
- Keep this manual for future reference.
- Do not expose the speaker to water, moisture, or extreme temperatures.
- Do not block ventilation openings.
- Use only attachments/accessories specified by the manufacturer.
- Disconnect the speaker from the power source during lightning storms or when unused for long periods.
- Refer all servicing to qualified service personnel.
3. Package Contents
Verify that all items are present in the package:
- Technical Pro 12-Inch Rechargeable Bluetooth LED Speaker
- Power Adapter/Charging Cable
- User Manual
4. Product Overview
The Technical Pro TPFLAG12DR speaker combines powerful audio output with convenient features for various applications. Key features include:
- Powerful Audio: Equipped with a 12-inch woofer and 2000 watts peak power for full-range stereo sound reproduction.
- Bluetooth Streaming: Seamless wireless connection to smartphones, tablets, laptops, and other Bluetooth-enabled devices.
- Multiple Media Inputs: Supports USB flash drives and micro SD cards (up to 64GB) for direct audio playback.
- Rechargeable Battery: Built-in battery provides hours of continuous music playback, making it ideal for portable use.
- Integrated LED Lights: Multi-color flashing disco LED party lights enhance the visual experience.
- Control Panel: Features treble, bass, echo, and volume controls for sound customization, along with an LCD screen for playback information.
- Portability: Designed with a top carry handle for easy transport.

Figure 4.1: Overview of speaker features, including 2000 watts peak power, 12-inch LED woofer, A2DP & AVRCP stereo Bluetooth, 1/4" microphone input, built-in LCD screen, USB & TF Card inputs (max 64GB), and built-in rechargeable battery.

Figure 4.2: Front and rear panels of the speaker, showing the LED woofer on the front and the control panel, inputs, and carry handle on the rear.
5. Setup
5.1 Initial Charging
Before first use, fully charge the speaker's built-in battery. Connect the provided power adapter to the speaker's charging port and plug it into a standard wall outlet. The charging indicator light will illuminate. Once fully charged, the indicator may change color or turn off, depending on the model. A full charge typically takes several hours.
5.2 Powering On/Off
Locate the Power switch on the rear control panel. Flip the switch to the 'ON' position to power on the speaker. Flip it to the 'OFF' position to power off the speaker.
6. Operating Instructions
6.1 Bluetooth Pairing
- Ensure the speaker is powered on.
- Press the 'Mode' button on the control panel until 'Bluetooth' mode is selected. The speaker will emit an audible prompt and the Bluetooth indicator will flash, indicating it is ready for pairing.
- On your mobile device (smartphone, tablet, etc.), enable Bluetooth and search for available devices.
- Select 'Technical Pro Speaker' (or similar name) from the list of devices.
- Once paired, the speaker will emit another audible prompt, and the Bluetooth indicator will stop flashing, remaining solid. You can now play audio from your device through the speaker.

Figure 6.1: Illustration of Bluetooth connectivity, showing a smartphone wirelessly paired with the speaker.
6.2 USB/SD Card Playback
- Insert a USB flash drive or micro SD card (with audio files) into the corresponding slot on the control panel.
- The speaker will automatically switch to USB or SD card mode and begin playing audio. If not, press the 'Mode' button to select the correct input.
- Use the 'Play/Pause', 'Previous', and 'Next' buttons on the control panel to manage playback.
6.3 Adjusting Sound and LED Lights
- Volume Control: Use the main 'Volume' knob to adjust the overall sound output.
- Treble/Bass/Echo: Dedicated knobs allow you to fine-tune the high frequencies (Treble), low frequencies (Bass), and add an echo effect to microphone input (Echo).
- LED Lights: A dedicated switch or button on the control panel controls the multi-color LED lights. Press it to turn the lights on or off.
7. Maintenance
- Cleaning: Use a soft, dry cloth to clean the exterior of the speaker. Do not use abrasive cleaners or solvents.
- Storage: When not in use, store the speaker in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: For optimal battery life, avoid fully discharging the battery frequently. Recharge the speaker regularly, even if not in use for extended periods.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Battery discharged; Power switch off; Power cable disconnected | Charge the battery; Turn power switch ON; Check power cable connection |
| No sound | Volume too low; Incorrect input mode; Device not paired (Bluetooth) | Increase volume; Select correct mode (Bluetooth, USB, SD); Re-pair Bluetooth device |
| Bluetooth not connecting | Speaker not in pairing mode; Device Bluetooth off; Too far from speaker | Ensure speaker is in Bluetooth pairing mode; Enable Bluetooth on device; Move device closer to speaker (within 30 ft) |
| USB/SD card not playing | Incorrect file format; Card/drive not inserted correctly; Card/drive corrupted | Ensure files are MP3 or compatible; Re-insert card/drive; Try a different card/drive |
9. Specifications

Figure 9.1: Speaker dimensions: 14 inches wide by 20 inches high.
| Feature | Detail |
|---|---|
| Model Number | TPFLAG12DR |
| Speaker Type | Woofer |
| Subwoofer Diameter | 12 Inches |
| Speaker Maximum Output Power | 2000 Watts (Peak) |
| Connectivity Technology | Bluetooth, USB |
| Wireless Communication Technology | Bluetooth |
| Bluetooth Range | Up to 30 feet (approx. 9 meters) |
| Media Inputs | USB, Micro SD Card (up to 64GB) |
| Power Source | Battery Powered (1 Lithium Ion battery included) |
| Product Dimensions (D x W x H) | 12"D x 14"W x 20"H |
| Item Weight | 10 Pounds |
| Impedance | 4 Ohms |
| Frequency Response | 20 KHz |
| Audio Output Mode | Stereo |
| Color | Black |
10. Warranty and Support
Technical Pro products are designed for reliability and performance. For warranty information, please refer to the documentation included with your purchase or visit the official Technical Pro website. If you encounter any issues or require technical assistance, please contact Technical Pro customer support through their official channels.