They are designed by the freaking geniuses at A Brown Soun in San Rafael, California. They use the hemp cones that are found on their Tone Tubby Guitar and Bass speakers, which have a worldwide following.

Old school folks should LOVE these woofers because they are designed by old school folks. I have a set of the 10s on order, I'll post a review as soon as I can. But for now... here are some T/S parameters on a few of the more interesting items in their speaker line