SANSUI F31 Mini Portable Multimedia Speaker User Manual

1. Introduction

The SANSUI F31 is a versatile mini portable multimedia speaker designed for ease of use and high-quality audio playback. It features Bluetooth 5.0 connectivity, FM radio, and supports playback from TF cards and USB flash drives. With its compact design, built-in rechargeable battery, and hands-free calling, it is ideal for outdoor activities and everyday listening.

2. Safety Information

• Do not expose the device to extreme temperatures, direct sunlight, or high humidity.
• Avoid dropping or subjecting the device to strong impacts.
• Keep the device away from water and other liquids. It is not waterproof.
• Do not attempt to disassemble or repair the device yourself. Refer all servicing to qualified personnel.
• Use only the specified charging voltage (DC5V/1A-3A) and a compatible Type-C charging cable.
• Keep out of reach of children.

3. Package Contents

• 1 x SANSUI F31 Multimedia Speaker
• 1 x User Instructions
• 1 x Type-C Charging Cable
• 1 x Hanging Rope

4. Product Overview

Familiarize yourself with the various parts and controls of your SANSUI F31 speaker.

Figure 1: Front View of SANSUI F31 Speaker

Figure 2: Rear View with Ports (TF, USB, DC 5V, AUX)

Figure 3: Top View with Controls and LED Display

Controls and Indicators:

• LED Display: Shows playback time, FM frequency, and other status information.
• Number Buttons (0-9): For digital song selection and FM station tuning.
• M Button: Mode switch (Bluetooth, FM, TF, USB, AUX).
• Light Button: To switch on/off the magic colored light.
• Record Button: Initiates recording.
• Delete Button: Deletes recorded files.
• Play/Pause Button: Controls media playback.
• Volume +/- Buttons: Adjusts volume.
• Previous/Next Track Buttons: Navigates between tracks or FM stations.
• Power Button: Turns the device on/off.

Ports:

• TF Card Slot: For inserting a TF (MicroSD) card for music playback.
• USB Port: For inserting a USB flash drive for music playback.
• DC 5V (Type-C) Port: For charging the device.
• AUX Input: For connecting external audio devices via a 3.5mm audio cable.
• Headphone Jack: For private listening with headphones.

5. Setup

5.1 Initial Charging

Before first use, fully charge the SANSUI F31 speaker. Connect the provided Type-C charging cable to the DC 5V port on the speaker and the other end to a USB power adapter (DC5V/1A-3A, not included) or a computer's USB port. The LED display may indicate charging status. A full charge typically takes a few hours.

Figure 4: Charging the SANSUI F31 Speaker

5.2 Power On/Off

Press and hold the Power Button to turn the speaker on or off. The LED display will light up when the device is powered on.

6. Operating Instructions

6.1 Mode Selection

Press the M Button repeatedly to cycle through the available modes: Bluetooth, FM Radio, TF Card, USB Drive, and AUX Input.

6.2 Bluetooth Pairing

1. Turn on the speaker and switch to Bluetooth mode (the LED display will show 'BLUE' or a similar indicator).
2. Enable Bluetooth on your mobile device (smartphone, tablet, etc.).
3. Search for available Bluetooth devices and select "SANSUI F31" from the list.
4. Once paired, the speaker will emit a confirmation sound, and you can start playing audio from your device.

6.3 TF Card / USB Drive Playback

1. Insert a TF card or USB flash drive (containing MP3, FLAC, WAV files) into the respective slot.
2. Switch the speaker to TF Card or USB Drive mode. The speaker will automatically detect and begin playing music.
3. Use the Number Buttons (0-9) for digital song selection or the Previous/Next Track Buttons to navigate.

6.4 FM Radio Operation

1. Switch the speaker to FM Radio mode.
2. Automatic Scan: Long press the Play/Pause Button to initiate an automatic scan for FM stations. The speaker will save all found stations.
3. Manual Tuning/Station Selection: Use the Previous/Next Track Buttons to cycle through saved stations. You can also use the Number Buttons (0-9) to directly input a station number if supported.

6.5 Recording and Deletion

In USB drive/TF card music playback mode, long press the Record Button to start recording. Press it again to stop. To delete a recorded file, long press the Delete Button.

Figure 5: Recording and Deletion Controls

6.6 Hands-Free Calling

When connected via Bluetooth to a smartphone, the built-in high-definition microphone allows for hands-free calls. Press the Play/Pause Button to answer or end a call.

Figure 6: Hands-Free Call Feature

6.7 Headphone Use

Plug 3.5mm headphones into the headphone jack for private listening. The speaker's sound output will be muted.

6.8 Volume Control

Use the Volume +/- Buttons to adjust the playback volume. The LED display will show the current volume level.

6.9 Sound Modes

The speaker supports various sound modes including Hi-Res Sound Mode, 3D Surround Sound Mode, Stereo Sound Mode, Smart Sound Mode, Extra Bass Mode, and Standard Mode. Refer to the specific instructions for cycling through these modes, usually by a short press of the 'M' button or a dedicated sound mode button if present (not explicitly shown in diagrams).

6.10 Magic Colored Light

The speaker features a switchable magic colored light on the back. Press the Light Button to turn it on or off.

Figure 7: Magic Colored Light Feature

6.11 Product Demonstration Video

7. User Tips

• For optimal FM radio reception, ensure the speaker is in an open area.
• To extend battery life, turn off the magic colored light when not needed.
• While the speaker supports various playback modes, TWS (True Wireless Stereo) pairing for connecting two speakers simultaneously is not explicitly mentioned in the product specifications.

8. Maintenance

• Clean the speaker with a soft, dry cloth. Do not use abrasive cleaners or solvents.
• Store the device in a cool, dry place when not in use.
• Avoid blocking the speaker grille or ports to ensure proper ventilation and sound quality.
• Charge the battery at least once every three months to maintain its lifespan if stored for extended periods.

9. Troubleshooting

10. Specifications

11. Warranty and Support

For warranty information and technical support, please refer to the seller's policies or contact the manufacturer directly. Keep your purchase receipt as proof of purchase.