Hi Marcus. I've been a member here for awhile but have never posted any messages. I have a pair of 12" full range driver with whizzers that if scavenged from an old RCA tube-based console. I was going to sell them, but when I tested them, I thought they sounded surprisingly good, even without an enclosure. I decided to see what I could dig up on line and I came across your post from around 2005 referencing this driver. I was hoping you could tell me more about it. Will this speaker work well in a box without and other hf drivers? Could you offer any advice on an enclosurure? I'm thinking of building some boxes for these, but I am new to diy speakers, and I know their are certain perameters invoving cubic feet, ports, etc. Any advice? Thanks, B.