If your teammates can not hear you, make sure of the following:

USB is correctly plugged in
Only one voice chat application is in use while in-game.
The mic input is set to JBL Quantum Stream.
Mic gain is not turned all the way down
Mic is not muted (mute/unmute by pressing the touch panel on top of the mic). By default the RBG will indicate red for muted, and green for unmuted(active).