So I moved into a house that's on peer and beam. The floor is not solid since it's not on a foundation. My sub, Onkyo, doesn't sound right. It's almost like the sound is firing downward from the driver through the floor. Is there a way to re-direct the boom? It's a good powered sub with decent power. The biggest effect I'm getting right now is a shaky floor when the boom comes on.
Only thing I can think of is to raise it up off the floor and away from a wall or corner.
You can do the "subwoofer crawl". Sit the sub in your normal listening spot and put on a song or movie with good lowend bass. Then, crawl around the room until you find the sweet spot where it sounds the best. The will be a good spot to put the sub.