JBL PRX ONE Can't Get Bluetooth Stereo from 2 Towers Setup

CSBJIM32

I have a Pair of PRX 1 Speakers - I have connected the APP and its finally controlling the speakers but I can only connect 1 BT Audio control at a time. I Have a pair of Mackie Thump 15's and they connect both speakers in bluetooth - Why can't I get the JBL Two play both speakers in bluetooth?