Game changer - don’t be intimidated.
I was fairly nervous whether I’d be able to correctly setup/use these things as I had 0 experience with even the concept. It ended up being so easy and making a tremendous difference. I have this installed onto a recliner, I literally just screwed it into the wood of the chair frame (vertically), and I put (separately bought ) rubber feet on each corner of the recliner to isolate it from the floor. Wiring wise, it’s just like any other subwoofer - I had a cheap 300w subwoofer amp from Amazon, and I almost never get the volume above 25-30%.
I had tried a smaller unit earlier, which was decent, but tended to overdrive/bottom out because it was too small (mass) for my chair. This is probably sufficient to shake a small couch and is more than enough for my recliner.
It adds to movies and is pretty enjoyable overall being able to feel gunshots and bangs and such…but games…this is where it’s a night/day difference. I am primarily using headphones and I miss the punch/slam from using a speakers and subwoofer. This was my solution, will never go back now.