After shopping for a bluetooth speaker lately and being somewhat shocked with the prices of anything better than a toy, I decided to try building my own. This one is made of oak and mahogany, and has a 4 inch full-range driver. I found an off-the-shelf little board (for around $20 or so) that handles all of the bluetooth details. It sounds great. The range is a little low, but that may have to do with having to receive through 3/4 of a inch of red oak. I can probably only get around 10 feet away and still have it work - but I can live with that. We put it on this shelf in our living room. It really looks pretty nice over there.