F&D A521X-cr
F&D A521X 2.1 Channel Multimedia Bluetooth Speakers User Manual
Model: A521X-cr | Brand: F&D (Refurbished by Amazon Renewed)
1. Introducció
Thank you for choosing the F&D A521X 2.1 Channel Multimedia Bluetooth Speakers. This system is designed to deliver impressive audio quality with its robust subwoofer and satellite speakers. Featuring versatile connectivity options including Bluetooth, USB, and FM radio, it provides a comprehensive audio solution for your home entertainment needs. This manual will guide you through the setup, operation, and maintenance of your speaker system.

Image: The F&D A521X 2.1 Channel Multimedia Bluetooth Speaker system, showcasing the central subwoofer, two satellite speakers, and the remote control.
1.1 Què hi ha a la caixa?
- One Main Unit (Subwoofer)
- Dos altaveus satèl·lit
- Un comandament a distància
- One Installation Guide
- Una targeta de garantia
- Two Audio Input Cables
2. Guia de configuració
2.1 Desembalatge
Carefully remove all components from the packaging. Ensure all items listed in the "What's in the Box?" section are present and undamaged. Keep the original packaging for future transport or service needs.
2.2 Connexió dels altaveus
- Place the subwoofer on a stable surface, preferably on the floor for optimal bass performance.
- Position the two satellite speakers on either side of your listening area, ensuring they are at an appropriate distance for stereo sound.
- Connect the satellite speakers to the corresponding output ports on the rear of the subwoofer. Ensure a secure connection.

Imatge: Un primer pla view of the two satellite speakers, highlighting their 4-inch full-range drivers.
2.3 Connexió d'alimentació
Connect the power cord from the subwoofer to a standard electrical outlet. The system features an automatic voltage regulator for a wide operating voltage gamma.
3. Instruccions de funcionament
3.1 Controls bàsics
The F&D A521X features convenient side panel controls on the subwoofer for easy access to volume and bass adjustments. Rotate the knobs to increase or decrease the respective levels.
3.2 Mode Bluetooth
- Enceneu el sistema d'altaveus.
- Press the 'Mode' button on the subwoofer or remote control until "Bluetooth" mode is selected. The display will indicate Bluetooth pairing readiness.
- On your compatible device (smartphone, tablet), enable Bluetooth and search for available devices.
- Select "F&D A521X" from the list to pair. Once paired, you will hear a confirmation sound, and you can begin playing audio wirelessly.
Reproducció USB 3.3
The speaker system is equipped with a USB port for playing media directly from a USB drive. It supports MP3 and WMA dual formats decoding.
- Insert your USB drive into the USB port on the side of the subwoofer.
- The system will automatically switch to USB mode and begin playing compatible audio files. If not, press the 'Mode' button to select USB.

Image: The F&D A521X subwoofer with a USB drive inserted into its port, illustrating the USB playback capability.
3.4 Ràdio FM
The A521X features an uninterrupted digital FM radio working on PLL technology, with storage for up to 100 stations.
- Premeu el botó "Mode" per canviar al mode de ràdio FM.
- Use the tuning buttons on the remote control or subwoofer to scan for and save FM stations.
- You can directly select desired stations using the numeric keys on the remote control.
3.5 Multi-Input Sources
The speaker system supports various input sources, including USB and Bluetooth, allowing for flexible connectivity with different devices.

Image: The F&D A521X speaker system shown with various compatible devices such as smartphones and tablets, demonstrating its multi-optional input source support.
4. Cura i Manteniment
- Neteja: Use a soft, dry cloth to clean the surfaces of the speakers. Do not use liquid cleaners or aerosol sprays, as they may damage the finish or internal components.
- Col·locació: Col·loqueu els altaveus sobre una superfície estable i plana per evitar caigudes accidentals. Eviteu exposar-los a la llum solar directa, a prop de fonts de calor o en zones amb molta humitat.
- Ventilació: Assegureu-vos que hi hagi una ventilació adequada al voltant del subwoofer per evitar el sobreescalfament. No bloquegeu cap obertura de ventilació.
- Apagar: Always turn off the speaker system when not in use for extended periods.
5. Solució De Problemes
If you encounter any issues with your F&D A521X speaker system, please refer to the table below for common problems and their solutions.
| Problema | Causa possible | Solució |
|---|---|---|
| Sense poder | Cable d'alimentació no connectat; presa de corrent no funciona | Assegureu-vos que el cable d'alimentació estigui ben connectat; proveu una altra presa de corrent |
| Sense so | Volume too low; Incorrect input mode; Satellite speakers not connected | Increase volume; Select correct input mode (Bluetooth, USB, FM); Check satellite speaker connections |
| Bluetooth no connectat | Speaker not in pairing mode; Device Bluetooth off; Too far from speaker | Ensure speaker is in Bluetooth pairing mode; Turn on Bluetooth on your device; Move device closer to speaker (Bluetooth 4.0 version) |
| No es reprodueix l'USB | Unitat USB no inserida correctament; No compatible file format; Corromput files | Torneu a inserir la unitat USB; assegureu-vos files are MP3/WMA; Try a different USB drive or files |
| Mala recepció FM | Senyal feble; Antena no estesa | Adjust antenna position; Try repositioning the speaker system |
6. Especificacions tècniques
| Característica | Detall |
|---|---|
| Nom del model | A521X |
| Tipus d'altaveu | Subwoofer with Satellite Speakers |
| Configuració del canal de so envoltant | 2.1 |
| Material | Subwoofer de fusta |
| Color | Negre |
| Controlador de subwoofer | 6.5" Bass Driver |
| Satellite Driver | 4" Full Range Driver |
| Potència de sortida (RMS) | 52 W (Subwoofer: 20W, Satellites: 16W x 2) |
| Tecnologia de connectivitat | Bluetooth 4.0, USB, Audio Input Cables |
| Suport USB | MP3/WMA dual formats decoding |
| Ràdio FM | PLL technology, 100 station storage |
| Funcions d’alimentació | Volum automàtictage regulator, High efficient energy saving design |
| Dispositius compatibles | Smartphone, Tablet, Music Players |
| Pes de l'article | 5.4 quilos |
| Dimensions del producte (LxWxH) | 42.9 x 29.6 x 42.9 cm |
7. Garantia i Suport
7.1 Informació de la garantia
This Amazon Renewed product comes with a 6-month seller or brand warranty. Please refer to the warranty card included in the box for specific terms and conditions. Keep your purchase receipt as proof of purchase for warranty claims.
7.2 Atenció al client
For any technical assistance, troubleshooting beyond this manual, or warranty claims, please contact the seller or the F&D customer support as per the details provided on your warranty card or product packaging. You may also refer to the Amazon Renewed program details for support related to refurbished products.
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