Over on Audio Asylum a member posted about, the GOOD, the BAD and the UGLY! I have to agree with his opinion that the continued exploration of items outside of the mainstream such as the Hartley drivers was wonderful.
In fact I'd like to propose a review of the Hartley 24" "Super-Woofer" as a sub competing against some of todays more modern subs. The Hartley (to the best of my knowledge) hasn't changed much since it was featured in Leveinsons HQD system so many years ago and perhaps not much since the mid 50's.
I'd love to see such a comparitive review one of this "ancient" design against it's more modern competition one of these days.... PPPLLLEEEASSSEEEE JA!