I need a sound bar and this one works great! It has several different options for output and has my front room sounding great

I received this as a gift & hooked it up recently. I am enjoying it but am having a problem with the volume. I turn the TV on first, then turn the sound bar on & every time, the bar comes on full volume, even if the TV volume is low. Is that normal? I hope not. Please let me know how to fix this. I did use the learn feature for the volume + & -, in hopes of fixing it. It didn't. I restarted the sound bar after the learning process, but same thing.

i t hink i can figure out how to hook it up but it would sure be nice to have some instruc tions on the optimimum set up. Do I have to have it wired to the tv? It says something about blue toot h. is there a way for it to get a blue tooth signal from tv accross the room and give surround sound?