I just built a pair of Tl/Electrostatics using panels supplied by the ESL Information Exchange: http://www.jps.com/eslinfo Barry Waldron bends over backwards to help from design to completion. They blow away the ML SL-1 at a fraction of the cost (and much more visually impressive. To see pictures of the completed project I've put some pics on http://pluto.njcc.com/~genashor/Speaker BTW, David Lucas is NOTORIOUS for bad quality and bad service. His advertisements in Speaker Builder are nothing short of Snake Oil tactics, IMHO.