I have been searching the Internet for specifications for the D-6 speakers...especially the woofer. Right after the company was purchased by Audio Technica, I replaced the woofers with 2 fro AT. They were not the same or as good as the originals...which I no longer have. I now need to replace on of the AT woofers and would like to get as close to the originals as possible. Can any one point me to where I can find this information?