All items tagged with racetrack drivers (14)

KEF Introduces the New Muo Portable Bluetooth Speaker with Auracast

September 23, 2025 by Joao Martins

KEF Introduces the New Muo Portable Bluetooth Speaker with Auracast

After more than 60 years of delivering great hi-fidelity sound, KEF is now embracing the challenge of conveying the same credits for portable audio with a new generation of the Muo Bluetooth speaker. Leveraging all the group's speaker expertise, the KEF Muo aims to deliver the same sense of "high fidelity sound" in a Bluetooth 5.4 design with LE Audio, Auracast, and aptX Adaptive, delivering effortless portability and everyday flexibility.

Patent Review: Multi-Layer Voice Coil Plate and Flat-Type Speaker Comprising the Same

June 19, 2024 by James Croft

Patent Review: Multi-Layer Voice Coil Plate and Flat-Type Speaker Comprising the Same

In this patent review, James Croft (Croft Acoustical) looks closely at a new patent of a multilayer voice coil plate and a flat speaker including the same type of multilayer voice coil plate, granted to three inventors from South Korea, on behalf of ICUBES Co., Ltd., Gyeongi-do, Korea. Detailing multiple configurations of this interesting concept, this patent offers an interesting take on the quest for the realization of a high-performance, one way, full-range electrodynamic transducer.

Voice Coil Patent Review: Two Key Resonado Patents

October 19, 2023 by James Croft

Voice Coil Patent Review: Two Key Resonado Patents

James Croft looks at two patents from Resonado Labs, the young speaker company that has been pursuing a new speaker topology — originally called Flat Core Speaker (FCS), and now rebranded as Res-Core — using a reconfigured speaker with a planar voice coil mounted perpendicularly to its flat diaphragm. This review covers two of the company's patents granted in 2022, titled "Speaker Comprising Split Gap Plate Structure," and "Flat Speaker Driven by a Single Permanent Magnet and One or More Voice Coils.".

Voice Coil Patent Review: Bidirectional Speaker Using Bar Magnets

October 12, 2023 by James Croft

Voice Coil Patent Review: Bidirectional Speaker Using Bar Magnets

In this article James Croft reviews a patent claimed by Leeg Hyun Cho (Gyeonggi-do, Korea), Youngil Cho (Chicago, IL), and Christian Femrite (Westminster, CO) on behalf of Resonado. The patent in question will be familiar to many Voice Coil and audioXpress readers who have followed the news about this young company's developments. As an experienced patent reviewer and speaker technology expert, Croft adds valuable context to the awarded patent. This article was originally published in Voice Coil, July 2021

Resonado Labs Announces Res-Core Gen 2 Speaker Technology

July 10, 2023 by audioXpress Staff

Resonado Labs Announces Res-Core Gen 2 Speaker Technology

Resonado Labs announced the completion of its transition to the new Res-Core Gen 2 speaker technology. As the Chicago-based company had anticipated, the new generation of Resonado's unique topology is now fully implemented, tested, and slated to be available through licensed manufacturers in fall 2023. The new technology is now available in two flagship driver platforms, namely the Resonado Neo Full 3 (NF3) Gen 2 and the Resonado Neo Woofer 7 (NW7) Gen 2.

June 29, 2023 by audioXpress Staff

Resonado Partners with Parts Express to Make Res-Core Woofer Available Direct to Consumers

Resonado Labs announced that, for the first time ever, its technology is now available directly to the public. Previously, Resonado's high-performance racetrack drivers, featuring the proprietary Res-Core architecture, were exclusively offered to companies through licensed manufacturers. Meeting requests from speaker builders and developers, Resonado partnered with Parts Express to make the NW7 Gen 1 racetrack woofer directly available to the market.

Triple Test Bench and the Latest Speaker Patents in Voice Coil July 2023

June 28, 2023 by audioXpress Staff

Triple Test Bench and the Latest Speaker Patents in Voice Coil July 2023

Another issue of the indispensable Periodical for the Loudspeaker Industry, Voice Coil July 2023 offers the first part of a loudspeaker design tutorial by Peter Larsen. James Croft reviews two patents from Resonado. And serving a generous dose of Test Bench, Vance Dickason characterizes the SB29SDNC-C000-4 29mm cloth dome tweeter from SB Acoustics, the M25 mkII 1" silk dome tweeter from Stereo Integrity, and the NeoPro 5i ribbon tweeter from Fountek Electronics.

Creative Announces Stage SE Under-Monitor Soundbar with Bluetooth 5.3 and USB Digital Audio

March 14, 2023 by Alfred Moody

Creative Announces Stage SE Under-Monitor Soundbar with Bluetooth 5.3 and USB Digital Audio

Soundbars have originally conquered the living room to compensate for the poor sound in very thin TVs, and evolved in meeting rooms by gaining microphones and conferencing features. At the same time, under-monitor soundbars are gaining popularity for both gaming and working from home. Creative Technology announced the release of Creative Stage SE, the fourth and smallest under-monitor soundbar in this series, designed to amp up the user’s desktop audio experience.

Voice Coil November 2022 Celebrates the Loudspeaker industry

October 28, 2022 by audioXpress Staff

Voice Coil November 2022 Celebrates the Loudspeaker industry

Happy 36th Anniversary Voice Coil! The November 2022 issue of Voice Coil once again celebrates the launch of this periodical as an information resource for the loudspeaker industry. Also, this month, Mike Klasco writes about technologies and solutions to enhance low-frequency performance, and James Croft reviews a recent patent awarded to Panasonic for a loudspeaker arrangement for a Near to the Ear Subwoofer in a car seat. For this month's Test Bench, Vance Dickason characterizes the 6CXN36 coaxial 6.5” pro sound driver from B&C Speakers, and Wavecor’s FR4X-6WA01 compact oval full-range driver. Now available in print, digital and online.

Cutting-Edge Speaker Innovation and Glue Joints Inside Voice Coil July 2021

June 25, 2021 by audioXpress Staff

Cutting-Edge Speaker Innovation and Glue Joints Inside Voice Coil July 2021

Voice Coil July 2021 is now available and full of valuable articles. Starting with Mike Klasco's insights on glue joints and attachment techniques used in speaker design. Followed by an updated and comprehensive directory of manufacturers and suppliers of adhesives, coatings, and treatments for the speaker industry. James Croft reviews the recent Bidirectional Speaker patent awarded to Resonado Labs, and Vance Dickason places the totally unique Purifi PTT6.5X04-NFA-01 midbass driver on Test Bench, followed by Beyma's 12LEX1300Nd 12” woofer with its unique Maltcross cooling system. Now available in print and online!

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