Fisher FBX390
Fisher Portable Bluetooth Speaker FBX390 User Manual
Model: FBX390
Introduction
Thank you for choosing the Fisher Portable Bluetooth Speaker FBX390. This speaker is designed to provide high-definition sound with dynamic lighting, offering a versatile audio experience for both indoor and outdoor environments. Featuring Bluetooth 5.3 connectivity, IPX4 water resistance, and True Wireless Stereo (TWS) functionality, this manual will guide you through its features and operation to ensure optimal performance.
Package Contents
Please verify that all items listed below are included in your package:
- Fisher Portable Bluetooth Speaker FBX390
- Power Cable
- Quick Start Guide
- Warranty Card
Product Overview
The Fisher FBX390 speaker features a robust design with intuitive controls and integrated lighting. Familiarize yourself with the speaker's components:

Figure 1: Front view of the Fisher FBX390 Portable Bluetooth Speaker, highlighting its design and IPX4 water resistance.

Figure 2: Internal view illustrating the 3-inch subwoofers and dynamic rhythm lights for immersive 2-way audio.
Control Panel
The control buttons are located on the top of the speaker for easy access:

Figure 3: Control buttons for power, mode, volume, and playback.
- Power Button: Press and hold to turn the speaker on or off.
- Mode Button (M): Press to switch between Bluetooth, FM Radio, AUX, and TF Card/USB modes.
- Volume Down (-)/Previous Track: Press to decrease volume. Press and hold to go to the previous track.
- Play/Pause Button: Press to play or pause audio. In FM mode, press to auto-scan and save stations.
- Volume Up (+)/Next Track: Press to increase volume. Press and hold to go to the next track.
- Light Mode Button: Press to cycle through different RGB lighting effects.
Setup
Initial Charging
Before first use, fully charge the speaker. Connect the provided power cable to the charging port on the speaker and a suitable power source. The charging indicator light will illuminate. Once fully charged, the light will change or turn off, indicating the speaker is ready for use. A full charge provides up to 5 hours of playback time.
Powering On/Off
To power on the speaker, press and hold the Power Button until you hear an audible prompt or see the indicator lights activate. To power off, press and hold the Power Button again.
Operating Instructions
Bluetooth Pairing
The speaker uses Bluetooth 5.3 for stable and fast connections up to 33 feet (10 meters).
- Ensure the speaker is powered on and in Bluetooth mode. If not, press the Mode (M) button until you hear the Bluetooth pairing prompt. The indicator light will flash, indicating it is ready to pair.
- On your smartphone, tablet, or other Bluetooth-enabled device, navigate to the Bluetooth settings.
- Search for available devices and select "FBX390" from the list.
- Once connected, you will hear a confirmation sound, and the indicator light will stop flashing.

Figure 4: The FBX390 speaker supports multiple input methods including Bluetooth 5.3, USB, TF Card, and AUX.
True Wireless Stereo (TWS) Pairing
TWS allows you to pair two FBX390 speakers together for a stereo sound experience.
- Ensure both FBX390 speakers are powered on and in Bluetooth mode, but not connected to any device.
- On one of the speakers (this will be the primary speaker), press and hold the Play/Pause button for a few seconds until you hear a pairing tone.
- The two speakers will automatically connect to each other. You will hear a confirmation sound once TWS pairing is successful.
- Now, connect your Bluetooth device to the primary speaker as described in the "Bluetooth Pairing" section. Audio will play through both speakers in stereo.

Figure 5: Two FBX390 speakers configured for TWS pairing, providing dynamic stereo audio.
FM Radio Mode
To use the built-in FM radio tuner:
- Press the Mode (M) button until you enter FM Radio mode.
- Press the Play/Pause button once to initiate an automatic scan for FM stations. The speaker will scan and save available stations.
- Use the Previous Track (-) and Next Track (+) buttons to navigate between saved stations.
AUX Input Mode
Connect external audio devices using a 3.5mm AUX cable (not included).
- Connect one end of the 3.5mm AUX cable to the AUX port on the speaker.
- Connect the other end to the audio output of your external device.
- Press the Mode (M) button until you enter AUX mode. Audio will now play through the speaker.
USB/TF Card Playback
The speaker supports audio playback from USB drives and TF (MicroSD) cards.
- Insert a USB drive or TF card containing audio files into the respective port on the speaker.
- Press the Mode (M) button until you enter USB or TF Card mode. The speaker will automatically begin playing audio files.
- Use the Previous Track (-) and Next Track (+) buttons to navigate tracks, and the Play/Pause button for playback control.
RGB Lighting Modes
The speaker features dynamic RGB lights that synchronize with your music.

Figure 6: The FBX390 speaker features bright, colorful RGB lights that breathe and beat to the rhythm of the music.
Press the Light Mode Button to cycle through different lighting effects or to turn the lights off.
Maintenance
Cleaning
To clean the speaker, use a soft, dry cloth. Do not use abrasive cleaners, waxes, or solvents as they may damage the finish. Ensure all ports are dry before charging or connecting external devices.
Storage
Store the speaker in a cool, dry place away from direct sunlight and extreme temperatures. If storing for an extended period, charge the battery periodically to maintain its lifespan.
Water Resistance (IPX4)
The FBX390 speaker is rated IPX4 water resistant, meaning it is protected against splashing water from any direction. This makes it suitable for outdoor use where it might encounter light rain or splashes. It is not designed to be submerged in water.

Figure 7: The IPX4 water resistance allows for safe outdoor enjoyment, such as by a pool.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Speaker does not power on. | Battery is depleted. | Charge the speaker using the provided power cable. |
| No sound from the speaker. | Volume is too low or muted. Incorrect mode selected. Device not paired. | Increase volume on both the speaker and your connected device. Ensure the correct input mode (Bluetooth, AUX, etc.) is selected. Re-pair your Bluetooth device. |
| Bluetooth device cannot find the speaker. | Speaker is not in pairing mode. Device is out of range. | Ensure the speaker is in Bluetooth pairing mode (flashing indicator light). Move your device closer to the speaker (within 33ft/10m). |
| TWS pairing fails. | One or both speakers are already connected to a Bluetooth device. | Disconnect both speakers from any Bluetooth devices before attempting TWS pairing. Ensure both speakers are FBX390 models. |
| Poor FM radio reception. | Weak signal. | Move the speaker to a different location, preferably near a window, to improve signal reception. |
Specifications

Figure 8: Dimensions of the Fisher FBX390 Portable Bluetooth Speaker.
| Feature | Detail |
|---|---|
| Model Name | FBX390 |
| Dimensions (W x H x D) | 13.64" x 8.1" x 5.58" |
| Item Weight | 3.08 pounds (1.4 kg) |
| Connectivity Technology | Bluetooth |
| Bluetooth Version | 5.3 |
| Bluetooth Range | Up to 33 feet (10 meters) |
| Speaker Output Power | 10W RMS (20W Peak) |
| Speaker Size | 3 Inches (x2) |
| Battery Capacity | 1500 mAh |
| Playback Time | Up to 5 hours (at moderate volume) |
| Water Resistance Rating | IPX4 (Splash-proof) |
| Frequency Response | 80Hz-18kHz |
| Signal-to-Noise Ratio | 85 dB |
| Audio Input Modes | Bluetooth, AUX, USB, TF Card, FM Radio |
| Included Components | Power Cable, Quick Start Guide, Warranty Card |
Warranty and Support
The Fisher Portable Bluetooth Speaker FBX390 comes with a Limited Warranty. Please refer to the included Warranty Card for detailed terms and conditions, including coverage period and how to obtain service. For technical support or inquiries, please contact Fisher customer service through the contact information provided on your warranty card or the official Fisher website.
Ask a question about this manual
Ask about setup, troubleshooting, compatibility, parts, safety, or missing instructions. Manuals+ will review the question and use this page’s manual context to help answer it.





