DIY Sites Transmission Line Speaker Website (excellent collection of transmission line theory information and projects) Edge Program - Diffraction Simulator Website Arthur Ludwig's Website (well documented acoustics theory) Commercial Sites Bob Brines' Website (good introduction to TL theory/design and some high performance commercial offerings) Jordan - USA (my source for Jordan drivers, also a good collection technical articles for DIYers) Salk Signature Sound (check out the Veracity QW and the new SongTower QWT speakers) Lowther America (my primary source for Lowther drivers and service, very knowledgable and helpful) S. M. Audio Engineering - Independent Transducer Design Consultant (download interesting and informative transducer design articles/information) Music Mosaic Records (my absolute favorite label and a great source for classic jazz box collections) True Blue Music Timeless Jazz Records Evening Star Records Blue Note Records -Home Page-