Shipped on time, easy to install, don’t know how anyone could watch a movie without one.
I have a large 2 piece sectional. I put 1 bass shaker in one piece of the 2 piece sectional and it could shakes like crazy. I may or may not get a second one for the other side. Some people may not like the shaking so they can sit on that side. (You can still feel it in both.)