These continue to amaze me. I bought them local in 2012 with the usual foam rot, but had them redone correctly and professionally by Bill LeGall at Millersound in Lancaster, PA. He did the 4 - 15" woofers as well as the 12" bass couplers. They are good to go! The person I bought these from built them from a kit that Brian supplied back in 1989 and I have the original build manual with all the edits and revisions during his build.
They have Brian Cheneys designed midrange drivers. I opened the bottom bass slot so a mans size hand can easily load and adjust the passive bass loading (rope putty).
The Super Tower R is a huge and heavy loudspeaker at 150lb each so sorry no shipping, these will be hard enough to get upstairs from my audio room and will require two men and a dolly with truck or van.
The ST/R love big power, and the better that quality is will reward the listener with a truly outstanding experience. Come for a listen through a Digital Amp Co. Classic Cherry.