A:AnswerIf you are looking to stay portable, I would recommend on of the smaller speakers (can still get loud though to hear movies well). I believe a nicer speaker and is a little larger, would be the UE Megaboom.
A:AnswerHi, are you plugging the speaker into the projector or iPad audio out jack? The projector 3.5mm audio jack volume is controlled via the projector and iPad volume control buttons.
A:AnswerI am unable to invert the image, pushing the mode button simply switches between HDMI and USB-C. Can this device actually invert image for ceiling mounting?
A:AnswerYes. There is a tripod screw in the bottom of the unit. The "MODE" selector button will flip the image for hanging upside down. You will need to purchase a ceiling mount that supports tripod screw mounting.
A:AnswerNO! You can use bluetooth ONLY if you source from a compatible bluetooth source, IE: TV or cell phone. If you use Roku, you cannot pair with bluetooth.