I don't have a subwoofer. What I do have is one of those smallish stereo and speaker things that were popular 10 or more years ago. It's a CD changer and tape player and two speakers. The speakers are about 8 inches wide by a 18 inches high, at a guess. I bought them at a garage sale years ago and the whole thing has been sitting in my office. But mostly I play stuff on my computer, and I have a Logitech sound system that's sufficiently good for that.

So if this would be any use for you, you're welcome to the whole thing, or just the speakers. Otherwise, I think it's going to be Freecycle. Or the curb with a Free notice.