Being a B&W owner, I wanted a clear answer to all of this. I called the head tech, Todd, at B&W for US at 800-370-3740. I asked him how long the drivers would be available for the 801 & 802 Matrix series (the Matrix III's were produced up until the Nautilus came out). He said the drivers would be available for another 5-7 years from now.
So, if the the woofer from the 801 is the same woofer as in the ASW 800, it is available and will be for some time.
So, if the the woofer from the 801 is the same woofer as in the ASW 800, it is available and will be for some time.