New much better speakers not much better, help

Good catch on sub settings. I check it out. To be clear, I have a box for the speakers. The roof in the rv is full styrofoam insulation. It has a pocket cut into it for the speaker which is just big enough to fit it. I’m thinking that airspace is too small, but I have no idea what it should be. I think these smaller speakers are supposed to be in free air like a car door.

Camper in storage so it’s a pain to run back and forth making this process take a long time.