There are definitely wireless subwoofer kits, and I'm sure you'll do better getting a wired budget sub and a kit than an all-in-one. I'm not experienced with any of the kits, but somebody will have a recommendation.
You will probably also be warned that subwoofer performance is tied to placement, and to consider your options for positioning.
What are your room dimensions, and is the room sealable with doors, or is it open to other areas?
You will probably also be warned that subwoofer performance is tied to placement, and to consider your options for positioning.
What are your room dimensions, and is the room sealable with doors, or is it open to other areas?