Que​​stion: 

Can the PRX900 series speakers be suspended and what is the correct way to install them?

Ans​wer: 

Only experienced professionals should attempt to suspend loudspeakers. 

For permanent installation applications utilizing the M10 suspension points, JBL Professional recommends the use of three (3) M10 x 1.5 thread pitch forged shoulder steel eyebolts with an 18-20mm threaded shaft, along with fender washers, rated for overhead suspension.

Users unfamiliar with safe rigging practices should not attempt to suspend loudspeakers.