The JBL Xtreme 3 speaker has several buttons and lamps across its top panel, and one of these the Infinity button. Here, we explain the function of this (A.K.A PartyBoost) button, what it does, and how to use it. In short, this control lets you join from two to over a hundred PartyBoost compatible JBL speakers together, such that they all play the same program material. Thus, you can fill a much bigger party area with sound than you can by playing just one speaker. Further, since you can position the speakers as far apart as is typical for Bluetooth speakers, the area you can cover with them is large enough for most small to medium sized parties.
Use the Infinity button to connect two or more JBL PartyBoost supporting speakers together, in “party mode”, including the Xtreme 3. Thus, when connected in this way, they all play the same program without any echoes or delays. PartyBoost mode is like Amazon’s multi room music groups. That is, all speakers that sync in play the same audio at the same time.
Then, with each speaker powered on, you press the Infinity button on each JBL speaker you wish to add to the group.
The Infinity button on the JBL Xtreme 3 appears like an infinity symbol, thus its name, as we see in the next picture, pointed at by the green arrow.
Note that you can mix and match any combination of JBL speakers in this joined group, so long as they all support the PartyBoost protocol. Most of the latest speakers from the Flip, Charge, Boombox, and Xtreme series models will work together as we describe next.
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