Patent Review: Compact Wideband Bass and Midrange Horn-Loaded Speaker System

This patent describes, a compact high-fidelity sound reproduction system achieving high efficiency, low distortion, wide bandwidth, and extended low-frequency reach, and which can be used as a sub-bass woofer, bass woofer, mid-bass woofer, and mid-range speaker for residential or commercial large venue applications. The system includes a dynamic driver driven bass horn, a looped resonator duct (ring geometry), which can be folded, and an adjustable feedback duct allowing sound characteristics to be tailored. This article was originally published in Voice Coil, April 2016.

In this Voice Coil Acoustic Patents article, James Croft discusses an interesting Transmission Line Loudspeaker patent assigned to three engineers from Bose regarding an electro-acoustic driver and acoustic waveguide that includes “an enclosure, an acoustic transmission line formed within the enclosure, and a plurality of acoustic transducers contained within the enclosure and disposed along a length of the acoustic transmission line.” As Croft notes, this seems to be an improvement over the Tapped Horn loudspeaker architecture patented by Tom Danley, assigned 10 years ago. This article was originally published in Voice Coil, June 2015

FaitalPRO attended Prolight+Sound 2019 in full force and with many new products to unveil, all with great appeal for the professional audio market. The renowned Italian manufacturer of professional loudspeakers announced two new XL woofers and a new 1.4" high-power compression driver that is now a top of the range product in the brand's catalog. But the largest announcement was a whole new family of FX600 Series woofers that includes the 12FX600, 15FX600, and 18FX600 models.

Launching at Cinema-Con 2019 (April 1-4) in Las Vegas, Danley Sound Lab's new range of cinema speakers combine the unique technologies and designs that have made the brand founded by Tom Danley. Loudspeakers featuring Danley’s Synergy Horn, full range, point source designs, and Tapped Horn subwoofers, combine to create a complete solution for cinema, including a dedicated surround speaker that is a fully horn-loaded, two-way coaxial design, and all powered by the company's range of DSP amplifiers with dedicated presets.

Now available, Linear Audio Volume 10 is the 11th issue of Jan Didden’s series of printed bookzines dedicated to technical audio and perception. It features a great team of contributing authors and a strong collection of enjoyable articles, with a diversified and refreshingly divergent collection of personal takes on great audio topics.

Milan-based FaitalPro continued to expand its catalog of high performance ferrite and neodymium drivers during the 2015 Prolight+Sound show. In Frankfurt, FaitalPro introduced its new 18” Neodymium Super Woofer, 18XL1800, leveraging the most advanced modern technologies in response to client demands.

Curiosity and ingenuity prove to be a powerful combination. Danley Sound Labs is the exclusive home of Tom Danley and its innovative loudspeaker designs. Tom has pioneered numerous technologies that have been utilized in a wide range of projects including ground zero bombing simulations, active noise cancellation of jet engines, critical listening mastering studios, live sound, commercial/high-end home theaters and houses of worship. Danley Sound Labs was founded in 2005 and enjoyed immediate success largely due to Tom Danley ’s reputation for building incredible products.