A:AnswerI think it will stay where you leave it. But as all movies do not project the same speech/voice volume you may have to adjust it for each movie regardless from like an action movie to a love story the voice will be different for each movie type.
A:AnswerYes I'd say it's normal for it to get warm in that area. That's where the power supply is for the unit. As far as the popping sound I would try moving the sub closer to the soundbar and try to reduce other wireless signals that may be causing interference.
A:AnswerI have the same issue. I think the best way to minimize it is to keep any other electronics from near by, because they are wireless they pick up radio frequency interference,
A:AnswerNo. This model is only compatible with Google Home. If you can get Google Home to successfully connect to the system and maintain a connection.