Introducció
The JBL Synchros S300 are on-ear stereo headphones designed for audio playback. They feature a durable construction, comfortable ear cushions, and a detachable cable with an in-line universal remote for convenient control of music and calls. This manual provides instructions for setting up, operating, and maintaining your Synchros S300 headphones.

Image: JBL Synchros S300 On-Ear Stereo Headphones in black and blue, showing the left earcup with JBL logo, adjustable headband, and the blue detachable cable.
Contingut del paquet
Si us plau, verifiqueu que tots els elements que s'enumeren a continuació estiguin inclosos al vostre paquet:
- JBL Synchros S300 On-Ear Stereo Headphones
- Detachable Audio Cable with Universal 3-Button Remote
- Funda protectora de transport
Configuració
- Connecteu el cable d'àudio: Locate the audio input jack on the left earcup of the headphones. Insert the smaller end of the detachable audio cable firmly into this jack. Connect the 3.5mm plug of the cable into the audio output of your device (e.g., smartphone, tablet, computer).
- Ajusteu l'ajust: Gently extend or retract the headband slides to adjust the headphones for a comfortable and secure fit over your ears. The earcups should rest comfortably on your ears without excessive pressure.
Instruccions de funcionament
Reproducció d'àudio
- Ensure the headphones are properly connected to your audio source.
- Start audio playback on your connected device.
- Adjust the volume using the in-line remote control or your device's volume controls.
Using the Universal 3-Button Remote
The in-line remote provides convenient control for music and phone calls. Functionality may vary slightly depending on your connected device (iOS or Android).
- Botó central:
- Premeu una vegada per reproduir/pausar la música.
- Premeu una vegada per respondre/finalitzar una trucada.
- Press twice to Skip to the next track.
- Press three times to Go to the previous track.
- Botó per pujar el volum (+): Press to increase audio volume.
- Botó per baixar el volum (-): Press to decrease audio volume.

Imatge: Un primer pla view of the blue detachable cable, highlighting the black in-line remote with three distinct buttons for control.
Plegable per a emmagatzematge
The Synchros S300 headphones feature a fold-flat design for easy portability and storage. Gently swivel the earcups inward until they lie flat against the headband. Place the folded headphones into the provided protective carrying case to prevent damage.
Manteniment
- Neteja dels coixins de les orelles: Wipe the soft leather ear cushions with a dry, soft cloth. For stubborn dirt, a slightly damp cloth can be used, but ensure the cushions are completely dry before use. Avoid harsh chemicals or abrasive cleaners.
- Cleaning Headband and Frame: Use a dry, soft cloth to clean the headband and frame.
- Emmagatzematge: When not in use, store the headphones in their protective carrying case to shield them from dust, scratches, and impacts. Avoid storing in extreme temperatures or high humidity.
- Cura del cable: Handle the detachable cable gently. Avoid sharp bends or excessive pulling.
Resolució de problemes
| Problema | Causa possible | Solució |
|---|---|---|
| No se sent so dels auriculars. |
|
|
| In-line remote not responding. |
|
|
| La qualitat de l'àudio és deficient o distorsionada. |
|
|
Especificacions
- Nom del model: Synchros S300
- Tecnologia de connectivitat: Amb cable
- Components inclosos: Cable, funda protectora
- Material: Leather (ear cushions)
- Dispositius compatibles: Universal
- Característica del cable: Desmuntable
- Mètode de control: Remote (3-button universal)
- Tipus de controlador d'àudio: Controlador dinàmic (40 mm)
- Col·locació de les orelles: A l'orella
- Factor de forma: A l'orella
- Presa per a auriculars: 3.5 mm Jack
- Pes de l'article: 11.2 unces
- Dimensions del producte: 6.77 x 3.54 x 8.5 polzades
- Color: Negre/Blau
- UPC: 050036320252
Garantia i Suport
JBL products are designed for reliability and performance. For detailed warranty information, please refer to the warranty card included with your purchase or visit the official JBL website. For technical support, product registration, or service inquiries, please contact JBL customer support directly through their official channels.
JBL oficial Weblloc: www.jbl.com





