Turn on both JBL speakers
Make sure both speakers support JBL Connect, JBL Connect+, or PartyBoost
Connect your phone or device to one JBL speaker via Bluetooth
Open the JBL Portable app if your model supports it
Press the Connect, Connect+, or PartyBoost button on the first speaker
Press the same button on the second speaker
Wait for the speakers to pair together
Play audio from your device
Keep both speakers within Bluetooth range
If pairing fails, turn both speakers off and on again
If needed, remove previous Bluetooth connections and try again