1. Introduction
Thank you for choosing the Media Tech 3.1 MT-3333 Wireless Bluetooth Speaker System. This system is designed to provide a rich audio experience for your home entertainment. It features a 3.1 channel configuration with a powerful subwoofer and three satellite speakers, offering versatile connectivity options including Bluetooth, USB, SD card, AUX, and Optical input. Please read this manual carefully before using the product to ensure proper operation and to maximize its performance.
2. Safety Information
- Power Source: Ensure the power supply voltage matches the requirements specified on the unit.
- Ventilation: Do not block any ventilation openings. Allow adequate space around the unit for proper airflow.
- Water and Moisture: Do not expose the unit to rain, moisture, or dripping/splashing liquids. Do not place objects filled with liquids, such as vases, on the unit.
- Heat: Keep the unit away from heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
- Cleaning: Unplug the unit from the power outlet before cleaning. Use a dry cloth for cleaning.
- Servicing: Do not attempt to service this product yourself. Refer all servicing to qualified service personnel.
- Placement: Place the unit on a stable, flat surface to prevent it from falling.
3. Package Contents
Please check that all items are present and in good condition:
- 1 x Subwoofer Unit
- 3 x Satellite Speakers
- 1 x Remote Control
- 1 x Optical Cable (3 meters)
- 1 x Power Cord
- 1 x User Manual (this document)
4. Product Overview
4.1 Subwoofer Rear Panel
The rear panel of the subwoofer houses all the input and output connections for the speaker system.

Image: Rear panel of the Media Tech MT-3333 subwoofer. This image displays the various audio input and output ports, including 3.1 channel inputs and outputs, an optical input, and the power switch and AC input. A caution label regarding electric shock is also visible.
4.2 Remote Control
The remote control provides convenient access to all functions of the speaker system.

Image: Remote control for the Media Tech MT-3333 speaker system. The remote features buttons for power, USB, SD, Bluetooth (BT), AUX, DIS (display), LED, mute, previous/next track, play/pause, repeat (REP), mode selection, bass and treble adjustment, volume up/down, EQ presets (EQ1-EQ4), number pad (0-9), reset, and sleep function.
5. Setup
5.1 Connecting Satellite Speakers
- Identify the three satellite speakers.
- Connect each satellite speaker to the corresponding 3.1-CH OUTPUT ports on the rear panel of the subwoofer. Ensure correct polarity (positive to positive, negative to negative) if applicable.
- Position the satellite speakers for optimal sound distribution in your listening area.
5.2 Power Connection
- Ensure the power switch on the rear panel of the subwoofer is in the 'OFF' position.
- Connect the power cord to the AC IN port on the subwoofer's rear panel.
- Plug the other end of the power cord into a standard electrical outlet.
6. Operating Instructions
6.1 Power On/Off
- To turn on the system, flip the power switch on the rear panel of the subwoofer to the 'ON' position. The LED display will light up.
- To turn off the system, flip the power switch on the rear panel of the subwoofer to the 'OFF' position.
6.2 Input Modes
Press the 'MODE' button on the remote control or the front panel of the subwoofer to cycle through the available input modes: Bluetooth (BT), USB, SD, AUX, and Optical.
6.2.1 Bluetooth Mode
- Select 'BT' mode using the 'MODE' button. The display will show 'BT'.
- On your mobile device (smartphone, tablet, laptop), enable Bluetooth and search for available devices.
- Select 'MT-3333' from the list of devices. Once paired, you will hear a confirmation sound.
- You can now play audio from your device through the speaker system.
6.2.2 USB/SD Card Mode
- Insert a USB flash drive or SD card into the respective port on the subwoofer's front panel.
- Select 'USB' or 'SD' mode using the 'MODE' button. The system will automatically detect and begin playing compatible audio files.
- Use the 'Previous', 'Next', and 'Play/Pause' buttons on the remote control to manage playback.
6.2.3 AUX Input Mode
- Connect your external audio device (e.g., MP3 player, TV) to the 'AUX' input ports on the subwoofer's rear panel using an appropriate audio cable (not included).
- Select 'AUX' mode using the 'MODE' button.
- Play audio from your connected device.
6.2.4 Optical Input Mode
- Connect your audio source (e.g., TV, game console) to the 'OPTICAL' input port on the subwoofer's rear panel using the provided optical cable.
- Select 'OPTICAL' mode using the 'MODE' button.
- Ensure your audio source is configured to output audio via its optical port.
6.3 Volume and Tone Control
- Volume: Use the 'VOL+' and 'VOL-' buttons on the remote control to adjust the master volume.
- Bass: Use the 'BASS+' and 'BASS-' buttons on the remote control to adjust the bass level.
- Treble: Use the 'TRE+' and 'TRE-' buttons on the remote control to adjust the treble level.
- EQ Presets: Press 'EQ1', 'EQ2', 'EQ3', or 'EQ4' buttons on the remote to select different equalizer presets.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power cord not connected; Power switch off | Ensure power cord is securely plugged in; Turn power switch to 'ON' |
| No sound | Incorrect input mode; Volume too low; Mute function active; Loose speaker connections | Select correct input mode; Increase volume; Press 'MUTE' button on remote; Check all speaker cables are securely connected |
| Bluetooth not connecting | Speaker not in BT mode; Device not discoverable; Interference | Switch speaker to 'BT' mode; Ensure Bluetooth is enabled on your device and it's in pairing mode; Move device closer to speaker; Restart both devices |
| Remote control not working | Batteries depleted; Obstruction between remote and unit | Replace remote control batteries; Remove any obstructions; Point remote directly at the unit's sensor |
8. Specifications
| Feature | Detail |
|---|---|
| Model Name | MT-3333 |
| Speaker Type | 3.1 Surround Sound System |
| Output Power | 35W (Subwoofer) + 15W (Satellite Speaker) x 3 |
| Subwoofer Unit | 16.5 cm (6.5 inch) |
| Satellite Speaker Unit | 8 cm x 3 |
| Connectivity Technology | Bluetooth, USB, SD, AUX, Optical |
| Wireless Communication | Bluetooth |
| Control Method | Remote Control |
| Power Source | Corded Electric (AC220-240V 50Hz) |
| Materials | Wood + ABS Plastic |
| Color | Black |
| Mounting Type | Floor Standing |
| Recommended Uses | For Surround Sound Systems |
| Compatible Devices | Tablet, Laptop, Smartphone |
9. Maintenance
- Cleaning: Always unplug the system before cleaning. Use a soft, dry cloth to wipe the surfaces of the subwoofer and satellite speakers. Do not use liquid cleaners or aerosol sprays.
- Storage: If storing the unit for an extended period, unplug it from the power outlet and store it in a cool, dry place away from direct sunlight and extreme temperatures.
- Avoid Obstructions: Ensure that the speaker grilles and ventilation openings are free from dust and debris to maintain optimal performance.
10. Warranty and Support
This product comes with a standard manufacturer's warranty. For specific warranty terms and conditions, please refer to the warranty card included with your purchase or contact your retailer. For technical support or service inquiries, please contact the customer service department of your local Media Tech distributor or retailer.





