Alta Audio Receives US Patent for its XTL II Hybrid Transmission Line Technology

Alta Audio, the company created by industry veteran Michael Levy, announced that it received US patent 11917361B2 for its XTL Transmission Line technology. Recently introduced in the company's latest Aphrodite four-way loudspeaker, updating an already patented original technology that applies the cabinet internal geometry to tune the frequency response, the new approach evolves to a hybrid transmission line, a ported enclosure design that Michael Levy says greatly increases power handling, lowers distortion, and extends bass frequencies.

In the February 2024 issue of audioXpress read the latest on AI, Adaptive Audio Enhancement, and Noise Cancellation, Microphones, and Voice Capture. René Christensen writes about Acoustical Shape Optimization, and Richard Honeycutt writes about Sustainable Acoustical Products. David Ralph writes about Duelund vs. Linkwitz-Riley crossovers, and Paul Kittinger explains how to build the Duetta Transmission-Line speakers. Chris Paul writes about A Better Beta Follower amplifier, while Richard Honeycutt puts together an Imaginary Silvertec Guitar Amplifier.

Professional Monitor Company, or PMC, the British audio speaker company known for its Advanced Transmission Line designs, had one of the most important product launches at the 2023 High End Munich show. Expanding its well-deserved reputation from the professional studio monitor market, PMC continues to offer great hifi designs that leverage the same engineering principles. The new PMC Prodigy1 bookshelf and Prodigy5 tower speaker take the very essence of what makes PMC for our enjoyment.

Just before its presentation at AXPONA 2022, Alta Audio confirmed that it will soon ship Adam, a new floor standing three-way speaker that continues the company’s tradition of creating products with high impact sound reproduction. Alta Audio, is a NY-state company that since 2013 designs home audio loudspeakers using its own advanced technologies, the creation of industry veteran Michael Levy, its president and CEO.

After 25 years of designing, crafting and manufacturing high-end audio components, the founders of Audia Flight in Italy couldn't resist the temptation to design their own speakers. Following an original design created for testing their own audio amplifier circuits, which after ten years remains in use in their lab, the company decided it was time to create a new high end loudspeaker brand, Alare. And the company introduced Remiga 2, their first product now available.

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

UK-based PMC is celebrating its 30th anniversary this year, marking three decades of ‘Best of British’ loudspeaker design and manufacture for both the international professional music production and audiophile markets. From a modest start as two men in a garage to 30 years of the biggest movie soundtracks and albums in the world, the Professional Monitor Company Limited, had a remarkable trajectory grounded on a common devotion for transmission line designs and a fundamental belief in fidelity.

Alta Audio, the Huntington, NY, -based company devoted to home audio loudspeakers using its own advanced technologies, has announced that it will soon deliver Alyssa, a new loudspeaker model that combines compact dimensions with a detailed full-range and natural bass response, typically associated with significantly larger floor-standing speakers. Standing only 14.5” H x 9.6” W x 14.25”, and weighing 28 lbs., the new Alyssa (SRP: $5,000/pair) speakers use proprietary drivers and offer exquisite natural-wood finishes.

The High End show in Munich, Germany, opened with a blast on a first day filled with press conferences and dealer events, where there was no shortage of great sounding speakers. First among many and no doubt among the best quality to be found at the show are the new PMC fact signature speakers. These are re-engineered versions of the renowned fact.8 and fact.12 loudspeakers, with innovations and technology developed for the recently launched fact fenestria flagship, introduced in 2018 precisely at the Munich show.

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.