I used a Vizio 2.1 with a wireless SW. Connected directly to the TV thru HDMI. SW sits on the shelf behind the TV. All 3 components are hooked up to a power strip so I can hit a single button and cut off power to all 3 so as not to allow standby power to draw off the inverter while on battery.
Ours was on an articulating arm. It's a little firm and stiff .. but with some pressure, it pulls away from the wall about a foot, and articulates toward the couch or dining table about 30 deg or so.