It should not be hard to hang the sound bar from the Sanus SA405 bracket.
Install video on the Sanus Sa405 Bracket:
You will need to make a trip to the hardware store to purchase a few nuts and bolts. Here is what we suggest.
2x fender washers
2x lock washers
2x 1/4-20 butterfly nut
1. Put the fender washer on the bolt (to spread out the contact area to the bracket arm)
Attached are several pictures of an ZVOX hung on a mount similar to yours. we hope this helps, let us know if you hve any questions.