THOR: A D’Appolito Transmission Line

One of the most important speaker building projects published by audioXpress, THOR was designed by Joseph (Joe) D'Appolito, who is world-renowned for his pioneering work on MTM-based (mid-tweeter-mid) loudspeaker configurations. The original THOR transmission-line design was published in May 2002. For this online publication, audioXpress kept the original article unchanged, which has since been updated with availability of the original Madisound/SEAS kit and the publication of a complete kit project on the SEAS website. Read the complete article here.

Mike Klasco explains the evolution of speaker cone materials, from paper to the first experiments in plastics and finally to Polypropylene (PP), which became the preferred resin sheet material for thermoformed speaker cones. The article also discusses recent trends in woven composite cone fabrication. This article was published in Voice Coil, February 2014.

Fern & Roby, from Richmond, Virginia, designs audio speakers using heart pine timber, sourced locally, resulting in beautiful and unique products. The company currently sells The Beam full range tower speakers and the compact bookshelves, The Cube. Both are designed and engineered with vast attention to detail and result in extremely attractive products.

Thiel Audio Introduced the TT1 three-way Loudspeaker at the 2015 CES Show. The TT1, together with the previously introduced bookshelf TM3, is part of the company’s new 3rd Avenue Collection and the first Thiel Audio speaker to be assembled in its new Nashville facility. It represents a novel approach to design and manufacturing, in line with the company’s long-term vision for the high-end brand.

audioXpress September 2014 — special Speaker Focus Edition is now available online and in print. It’s (almost) all dedicated to speakers, including Nordic Audio Tales, a new series dedicated to the speaker brands from the northern regions of Europe, a complete overview of Theater Sound speaker companies, and much more.