The JBL speakers in the Flip, Charge, Xtreme, Boombox, and PartyBox series, let you sync together. This way, they all play the same program at the same time. This gives a much larger sound, to fill a larger party spaces with your favorite tunes. Older models have the Connect Plus button for this, while the … Continue reading How to Sync JBL Speakers-Connect+, PartyBoost