On the odd chance anyone else has a 50" Vizio TV and 36" Vizio Soundbar. Mounts using OEM leg holes and screws.
Print with Prusa Slicer defaults and supports everywhere.
In Slicer place one onto print bed, place onto leg support face, place a second object, mirror that one along X axis, place on leg support face. See pic.
The author hasn't provided the model origin yet.