What is this movable diaphragm in the bottom of the speaker for?
Taking this speaker apart to put in a Fanny pack and I was curious what the diaphragm in the bottom does for the speaker.
Features of the Artisan PH-BT2020 Portable Bluetooth Speaker by Photive include 40 mm drivers that give incredible sound and a battery that provides up to 8 hours of music entertainment.
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