Test Bench: The LT2 Ribbon Transducer and Waveguide from Radian Audio Engineering

For this Test Bench, Vance Dickason characterized the LT2 Ribbon Transducer and corresponding waveguide from Radian Audio Engineering. This is effectively a smaller version of the LT6 ribbon transducer reviewed in the July 2020 issue of Voice Coil, but offering much more diverse possibilities, as Vance Dickason discovers. And as the compact LT2 shows, this was designed to be more of a hi-fi or home theater substitute for any high frequency driver. This article was originally published in Voice Coil, August 2020.

In its August 2020 edition, Voice Coil featured an article by experienced speaker designer Igor Levitsky, highly recognized in the industry for developing some of the best planar magnetic speaker and headphone drivers for some of the most reputed brands, focusing precisely on this type of technology. It seems clear that we will see more and more headphones and speakers using thin-film drivers, as the industry is now perfecting the use of different types of diaphragms and materials. The August 2020 edition of Voice Coil includes the first part of this article, completed in the September 2020 edition.

In this article, Vance Dickason measures the Radian Audio Engineering's LT6 Horn-Loaded Ribbon Device, part of an expanding series designed by 35-year loudspeaker engineering veteran Igor Levitsky for the Californian manufacturer. The LT6 is a pro sound driver but was designed to be a more hi-fidelity substitute for 1" compression drivers, and that is a direct result of Levitsky extensive experience in designing high-end residential, and cinema sound systems. This article was originally published in Voice Coil, June 2020.

In January 2001, the first audioXPress magazine issue (Vol. 32 No.1) included this project from Thomas Perazella. Published in two parts, the articles described in detail the design and construction of a speaker using the Bohlender Graebener RD-75 planar magnetic driver, including references to previous experiments with dipole baffles. This is the first part of the project.