JBL speakers connect in two different ways depending on your model

Most JBL speakers pair to your phone or device one at a time through Bluetooth. But some JBL models also support PartyBoost or Connect+, which lets you link two speakers together so they play the same music in stereo or fill a larger space. PartyBoost is the older standard found on portable speakers like the Flip and Charge lines. Connect+ is the newer version on models like the Boombox 2 and PartyBox series. The method you use depends on which JBL speaker you own — check your manual or the JBL website to see if your model supports either feature.

The connection happens wirelessly between the speakers themselves, not through your phone. Once linked, you control both speakers from a single Bluetooth connection on your device. This is different from pairing two speakers to the same phone separately, which would create audio lag and echo.

Key Takeaways

  • PartyBoost and Connect+ are JBL's wireless linking features, but not all JBL speakers have them — check your model number in the manual first.
  • To connect two speakers, put both in pairing mode, press the link button on one speaker, then wait for the LED light to confirm the connection.
  • Once linked, the speakers stay bonded until you manually unlink them, so you only pair them once even if you turn them off and back on.
  • If the connection fails, reset both speakers by holding the power button for 10 seconds, then try the pairing process again from the start.

How to connect two JBL speakers with PartyBoost

PartyBoost works on older JBL portable speakers. Start by powering on both speakers and making sure they are fully charged or plugged in. Place them within 10 feet of each other — the connection is strongest when they are close during the initial pairing.

On the first speaker (the one you will control from your phone), press and hold the PartyBoost button for about three seconds until the LED light blinks blue. This puts the speaker into pairing mode. Now press and hold the PartyBoost button on the second speaker for three seconds as well. The LED on the second speaker will blink, then turn solid blue when the connection is made. You should hear a confirmation tone from both speakers.

Once they are linked, connect your phone to the first speaker through Bluetooth as you normally would. The second speaker will automatically receive the audio. If you want to add a third speaker, repeat the process: put the third speaker in pairing mode and press PartyBoost on the first speaker again. Some JBL models let you link up to three or four speakers this way.

How to connect two JBL speakers with Connect+

Connect+ is JBL's newer linking system and works the same way as PartyBoost but with slightly different button placement. Power on both speakers and place them within 10 feet of each other. Look for the Connect button on the back or side of the speaker — it is usually a small circular button separate from the power and volume controls.

Press and hold the Connect button on the first speaker for three to five seconds until you see the LED flash blue or white. Then press and hold the Connect button on the second speaker. When the second speaker's LED turns solid (usually blue or white depending on the model), the speakers are linked. You will hear a tone confirming the connection.

Connect your phone to the first speaker via Bluetooth. The audio will play through both speakers automatically. Unlike PartyBoost, Connect+ on some newer models also lets you control volume on each speaker independently through the JBL app, though this varies by model.

What to do if the speakers won't connect

If the LED lights are blinking but the speakers won't link, the most common cause is that they are too far apart or there is interference from other Bluetooth devices. Move the speakers closer together — within 5 feet if possible — and turn off any other Bluetooth devices nearby, including smartwatches and tablets.

If they still won't connect, reset both speakers. Hold the power button down for 10 seconds until the speaker shuts off completely, wait 30 seconds, then power it back on. Repeat this for the second speaker. Once both have restarted, try the pairing process again from the beginning, starting with putting the first speaker in pairing mode.

If one speaker connects but the audio only comes from one side, check that both speakers are at similar volume levels. Some JBL models default to one speaker at low volume. Adjust the volume on both speakers to roughly the same level, and the stereo effect should balance out.

How to unlink two JBL speakers

To disconnect the speakers from each other, press and hold the PartyBoost or Connect button on either speaker for about five to seven seconds. The LED will flash red or turn off, indicating the link has been broken. The speakers are now independent again and will not receive audio from each other.

You can still connect your phone to either speaker individually through Bluetooth after unlinking them. The speakers do not need to be unpaired from your phone — only the link between the two speakers is removed.

Stereo mode versus party mode

When you link two identical JBL speakers, some models automatically split the audio into stereo — the left speaker plays the left channel and the right speaker plays the right channel. This gives you wider, fuller sound. Other JBL models play the same full audio through both speakers, which is called party mode or mono mode. This fills a larger space with sound but does not create a stereo effect.

Check your speaker's manual to see which mode your model uses. Some newer JBL speakers let you switch between stereo and party mode through the JBL app or by pressing a button combination, but this is not standard across all models.

Frequently Asked Questions

Can I connect JBL speakers from different product lines together?

No. PartyBoost speakers only connect to other PartyBoost speakers, and Connect+ speakers only connect to other Connect+ speakers. You cannot mix a Flip with a Charge or a Boombox with a PartyBox. Check the manual for both speakers to confirm they use the same linking system before attempting to pair them.

Do the speakers have to be the same size or model?

They do not have to be the exact same model, but they must support the same linking technology. Two different PartyBoost speakers can connect to each other, and two different Connect+ speakers can connect to each other. Size does not matter — a small speaker can link with a larger one as long as they both have the same pairing system.

What happens to the connection if I turn off one speaker?

The link is broken when you power off either speaker. When you turn it back on, the speakers will not automatically reconnect. You will need to go through the pairing process again by pressing the PartyBoost or Connect button on both speakers. However, your phone will still remember the Bluetooth connection to the first speaker.

Can I control the volume on each speaker separately?

On most JBL models, the volume controls on each speaker work independently — you can turn one up and one down. However, some newer models with the JBL app let you control both speakers' volume from your phone as a single unit. Check your app to see if this option is available for your model.

Why does only one speaker play audio after I connect them?

This usually means the second speaker did not fully link. The LED should be solid, not blinking. Power off both speakers, wait 30 seconds, power them back on, and try the pairing process again. Make sure you hold the PartyBoost or Connect button long enough — usually three to five seconds — until you hear the confirmation tone.