These high-end carbon fiber shelf speakers are based on a pair of B&W speakers manufactured in the early 2000's (or at least what I remember about them). They use a yellow carbon fiber woofer cone and an encapsulated tweeter. There's a slight bulge in the housing for the woofer. And, the housing has a carbon fiber inspired finish as well. I ended up getting a different pair of speakers which have served me well, but I always thought those yellow carbon fiber woofers were really cool.