All items tagged with speakers (111)

Speaker Measurements: Replacing IEC 60268-5 (Part 1) - What Comes Next and Why

January 25, 2023 by Geoff Hill

Speaker Measurements: Replacing IEC 60268-5 (Part 1) - What Comes Next and Why

Geoff Hill, the inventor of the Tetrahedral Test Chamber (TTC), a member of the international Electrotechnical Commission’s standards 60268-21-2018 and 60268-22-2020, and part of the IEC Working Group TC 100/TA 20/PT 60268-22 on electrical and mechanical measurements on transducers, summarizes the progress happening on loudspeaker measurement standards. This is the first of two articles, appealing directly to all loudspeaker designers and manufacturers. This article was originally published in audioXpress, September 2022.

Resonado Labs Licenses Res-Core Technology to GGEC

July 22, 2022 by Joao Martins

Resonado Labs Licenses Res-Core Technology to GGEC

Resonado Labs announced a licensing partnership with GGEC (GuoGuang Electric Company), one of the most renowned speaker manufacturers in the world. This partnership opens the door for Resonado to enter the smart speaker and television transducer market, further advancing the company's business into home audio integrations. Resonado’s flagship technology, Res-Core, will now be available for GGEC’s use as they manufacture advanced transducers and acoustic products for smart speaker and multimedia related systems.

Speakers: The Evolution of Production Line Rub & Buzz Measurements

July 14, 2022 by Steve Temme

Speakers: The Evolution of Production Line Rub & Buzz Measurements

This important article revisits the evolution of Rub & Buzz measurements in loudspeakers, headphone drivers, and microspeakers production lines, and how these are being addressed using the next-generation of perceptual algorithms. Steve Temme offers a valuable comparison with what can be accessed today using modern methods, and what to apply to access production faults, determine thresholds for production yields, or understand the real impact on consumer's perception. This article was originally published in audioXpress, April 2022.

Patent Review: Improved Speaker Structure by Jazz Hipster

June 28, 2022 by James Croft

Patent Review: Improved Speaker Structure by Jazz Hipster

This article reviews a patent application submitted in 2010 by to two inventors, on behalf of Jazz Hipster Corp. (Taiwan), regarding an improved structure of a speaker using the surround to reduce the resistance of the diaphragm excursion, which helps to generate a more linear diaphragm movement, with less resistance, and reduced distortion. As James Croft noted, the approach had been used in the past, but its use decreased due to the high-performance achieved with well-designed roll-surrounds, at a lower cost. No surprisingly this patent was subsequently abandoned.

Patent Review: A Speaker Device Offering Extended Bass Performance

May 17, 2022 by James Croft

Patent Review: A Speaker Device Offering Extended Bass Performance

This review discusses an intriguing speaker design patented by Walter Ka Wai Chu, from Taiwan. The design allows the speaker device to potentially improve the bass performance in the entire low-frequency band instead of being limited to only a few low-frequency points, the inventor claims. While James Croft confesses to being somewhat skeptical of whether, in its current disclosed form, the device will provide a useful advantage, he found the design sufficiently interesting to be analyzed in more detail.

Fresh From the Bench: KEF KC62 Subwoofer with Uni-Core Driver Technology

May 17, 2022 by Oliver A.Masciarotte

Fresh From the Bench: KEF KC62 Subwoofer with Uni-Core Driver Technology

Following the review of the KEF LS50 Meta speakers for audioXpress, this article offers a detailed review of the KC62 compact subwoofer, which combines KEF's force-canceling and Uni-Core technologies in a new approach to allow maximizing bass in a minimum space. Masciarotte did the listening and spoke with Jack Sharkey, Senior Technical Engineer at GP Acoustics, about this fascinating design. The subwoofer was also measured by Peterson at Warkwyn’s facility using the Klippel measurement system.

May 16, 2022 by Joao Martins

Canadian Loudspeaker Brand PSB Speakers Celebrates 50 Years of Hi-Fi Sound

PSB Speakers, the loudspeaker company that created the “Canadian Sound”, is celebrating 50 years of delivering high value hi-fi speakers at the intersection of science-based sound reproduction and musical enjoyment. Founded in St Jacob’s, Ontario, in the summer of 1972 by classically-trained violinist and self-taught acoustics designer, Paul Barton, and a couple of his high school friends, PSB Speakers soon became a pioneer in marrying psychoacoustics research with loudspeaker design.

Test Bench: Wavecor WF275BD01 10.75” Home Audio Woofer

April 27, 2022 by Vance Dickason

Test Bench: Wavecor WF275BD01 10.75” Home Audio Woofer

Part of a new series of drivers announced in October 2020 by Wavecor, this woofer could also be advantageous in high-powered studio monitors. This high-power design targets home audio and home theater applications, including two-way (with larger ribbon/AMT drivers, or compression driver/horn combinations) and three-way speakers. This article was originally published in Voice Coil, January 2022.

HEAD acoustics Proposes Multi-Dimensional Audio Quality Score as Standard Method for Audio Quality Assessment

April 22, 2022 by Joao Martins

HEAD acoustics Proposes Multi-Dimensional Audio Quality Score as Standard Method for Audio Quality Assessment

MDAQS or Multi-Dimensional Audio Quality Score, is a new binaural perception-based software tool that replaces human evaluation with novel metrics in the assessment of audio quality. This is a much needed approach for characterization of headphones, earphones, speakers, and any audio system, including automotive audio designs, researched, documented and validated by audio test and measurement company HEAD acoustics.

April 13, 2022 by Mike Klasco and Salvador Magdaleno-Adame

Next-Generation Rare-Earth-Free Magnets Are Coming

When a speaker development project is initiated, one of the first decisions is usually the magnet type — ferrite or neodymium — each one with its associated benefits, and problems. This article introduces the most promising alternative based on Iron Nitride (FeN), soon be available from Niron Magnetics, and offering the best characteristics of neo, without the supply chain drama, at a price point that rests somewhere between ferrite and neodymium. This article was originally published in Voice Coil, January 2022.

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