If you create a Stereo Pair using the JBL Portable App and you come within range of additional PartyBoost compatible speakers while they are ON, the app will find these speakers. This will break the stereo pair and create a mono PartyBoost group that includes all active speakers that are in proximity. This only happens when the JBL Portable App is actively running on the source device, including when it is running in the background, and when these other speakers are ON. To avoid this scenario, make sure the app is completely closed, without running in the background before coming near any additional PartyBoost speakers that happen to be ON.

NOTE: The Portable App does not need to be running in order to enjoy Stereo sound from two speakers