The Jim Griffin design single driver (with supertweeter) MLTL bipole speaker using CSS 4.5" drivers.
The Selah Audio XT-8 line array using 7" Vifa XT woofers and Fountek ribbon tweeters.
The AudioFred ART Array, using Dayton 5.25" classic woofers and a single Vifa XT25 tweeter.
The Selah Audio Texas Revelator Tower 2.5-way, using Scan Speak Revelator drivers.
The Brines Acoustics TT-2000 single driver MLTL using the new Tang Band W1772 full range driver.
The Pi Speakers One Pi tower. A mini-review by a leading SET amplifier designer can be seen here: http://www.iol.ie/~waltonaudio/pione.html
And finally, the AudioFred Talleray, which is still under construction.