So I am building my own dedicated home cinema. It’s not going to be huge, the room is only 3x4 metres. I’ve currently got some b&w 683 s2, the matching centre (can’t remember the model), b&w m1s and 4 b&w ceiling speakers. (Note that the room is still being built som they are all still in boxes ) These will all be powered by a Denon 4400 (along with power amps for the extra channels) I have an old Mirage subwoofer, must have had it for 15 years and it’s a great little speaker, and has nothing wrong with it. I was thinking of upgrading it to something a bit newer and smaller, maybe the B&W ASW608 as it’s on sale at the moment. But seeing as I am building a dedicated room would it be worth buying two of them, or would one be enough?