How to Fix JBL PartyBox 310 TWS Pairing Problems

What You'll Need

• Two JBL PartyBox 310 speakers
• A Bluetooth-enabled audio source (phone, tablet, etc.)

Troubleshooting Steps

1. Bring Speakers Closer: For the initial pairing, ensure both PartyBox 310 speakers are next to each other, ideally within 3 feet (1 meter). Distance and obstacles can interfere with the TWS setup process.
2. Connect One Speaker First: Power on both speakers. On your phone or Bluetooth device, connect to only ONE of the speakers. This will become the primary (Left channel) speaker.
3. Enter TWS Pairing Mode: Press the TWS button on the back of the primary speaker (the one connected to your phone). Then, immediately press the TWS button on the second speaker.
4. Wait for the Confirmation Sound: The speakers will blink while searching for each other. Be patient. It can take up to 30 seconds. You will hear a confirmation sound (like a sonar ping) when they have successfully linked in TWS mode. The second speaker will now mirror the music from the primary one.
5. Check L/R Channels: By default, the first speaker is the Left channel and the second is the Right. You can press the L/R channel button on the back of either speaker to swap them if needed.
6. Clear Previous Connections: If they fail to connect, turn off both speakers. On your phone's Bluetooth menu, find the PartyBox 310 and select 'Forget Device' or 'Unpair'. This clears any old data that might be causing a conflict.
7. Restart Everything: After forgetting the device, turn off your phone's Bluetooth. Power off both speakers. Then, power everything back on and start the process again from Step 2.
8. Factory Reset Both Speakers: As a last resort, a reset can clear deep software glitches. With a speaker on, press and hold the Volume Up (+) and Play buttons for 10 seconds until it reboots. You must do this for BOTH speakers to ensure they are in a clean state before attempting to pair again.