1-5 of 5 Answers
Your question is not clear when you use the terms "plug in" or "power it". I'll still try to answer. 1) The sound bar has an internal amplifier, so no external amplifier is needed. 2) The sound bar has a AC plug that must be connected to a 110V (US) wall outlet to power the amplifier in the sound bar. See manual, page 9 : http://cdn.vizio.com/misc/KBImages/models/m21dh8/manual.pdf 3) The sound bar several ways to get the audio signal from the source (TV). If your TV has an HDMI ARC port and that is used to plug into the sound bar, then the sound bar volume and power will be controlled by the TV. So, when you turn up the volume of the TV, the sound bar volume will go up. Additionally, if you turn on/off the TV, the sound bar will be turned on/off. This last feature is part of why the "power it" term is a little confusing. 4) I don't know if cable boxes have HDMI ARC features (I suspect not) so it is not likely you will want to connect the cable box directly to the sound bar. That is OK though. If you connect the sound bar to the TV, whatever sound that would normally come out of the TV speakers will come out of the sound bar.
Sorry, there was a problem. Please try again later.Vizio sound bars have their own dedicated power cords that need to be used.
Sorry, there was a problem. Please try again later.The sound bar must be plugged in to a 110V outlet for electrical power but is otherwise fully self-contained and no external amp is needed. Connect TV to sound bar with an audio signal cable and you are ready to go.
Sorry, there was a problem. Please try again later.You can connect the sound bar directly to the TV, and the sound bar will power on when the TV is turned on as long as the TV supports HDMI-CEC (some manufacturers rebrand HDMI-CEC to their own name, like EasyLink or EZSync, but Vizio uses the correct HDMI-CEC terminology).
Sorry, there was a problem. Please try again later.The sound bar requires a 110 volt plug to run its internal amplifiers. You also connect the HDMI-ARC or the optical signal out from TV to provide the sound signal.
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