All items tagged with efficiency (16)

SiliconIntervention Announces Availability of Silicon-Based Fractal-D Audio Amplifier Evaluation Board

March 26, 2025 by Joao Martins

SiliconIntervention Announces Availability of Silicon-Based Fractal-D Audio Amplifier Evaluation Board

SiliconIntervention announced the availability of an evaluation board, demonstrating the high efficiency operation of its Fractal-D audio amplifier aimed at wearable applications such as earbuds and smart glasses as well as mobile products that demand extended battery life. SiliconIntervention is the company exploring a new type of bridge configuration that improves the efficiency at lower power levels while maximizing efficiency over a wide range of power levels.

Loudspeaker Enclosures and Technologies. Voice Coil March 2025 is Now Available

February 28, 2025 by audioXpress Staff

Loudspeaker Enclosures and Technologies. Voice Coil March 2025 is Now Available

in this issue, Mike Klasco offers a renewed perspective about speaker cabinets and enclosures. Nora Wong compiled a highly sought-after Speaker Enclosure Vendors Directory for 2025. In Part 2 of his article, Dario Cinanni concludes his exploration of the SpeakerLAB software to simulate and predict speaker efficiency. In Test Bench, Vance Dickason characterizes the Dayton Audio Ultimax II 8-22 8" subwoofer and the very unique GAIT BGD-D72-64-4-0A1 glass diaphragm super tweeter.

Voice Coil February 2025. From DSP to Cones and Domes.

January 28, 2025 by audioXpress Staff

Voice Coil February 2025. From DSP to Cones and Domes.

This issue includes a new product review in Vance Dickason’s Outboard DSP series, exploring the miniDSP Flex audio processor. And Dario Cinanni explains how to Enhance Loudspeaker Efficiency and Bl(x) Symmetry with the Virtual Voice Coil software from SpeakerLAB. As scheduled, Mike Klasco and Nora Wong compiled the 2025 Cone and Dome Directory. For this month’s Test Bench, Vance Dickason characterizes the Faital Pro 5PR120 5” Pro Midrange Driver.

New Fractal Class-D Audio Amplifier Technology Maximizes Battery Life in TWS Earbuds

August 5, 2024 by Joao Martins

New Fractal Class-D Audio Amplifier Technology Maximizes Battery Life in TWS Earbuds

Typical Class-D amplifiers are generally tuned to give the highest efficiency when outputting large power levels but have a rather low efficiency at lower power levels. Using a new type of bridge configuration, the patented Fractal Class-D audio amplifier improves the efficiency at lower power levels while maximizing efficiency over a wide range of power levels. Available from SiliconIntervention, this technology was developed by Martin Mallinson, the company's founder and chief scientific officer.

SiliconIntervention: Low-Level Efficiency Improvements in Class-D

July 18, 2024 by Jan Didden

SiliconIntervention: Low-Level Efficiency Improvements in Class-D

Driven by the need to maximize battery life in portable devices, Class-D efficiency at low output levels is receiving greater attention. This is particularly important to achieve longer battery life in designs such as true wireless earbuds. Power optimized amplification is precisely the goal for Multilevel Class-D, and now there's also Fractal Class-D, a new technology developed by SiliconIntervention, a Canadian company formed in 2019 as the result of the pioneering research and development of its founder Martin Mallinson, the former Chief Scientist at ESS Technology.

Monolithic Power Systems Acquires Axign

February 7, 2024 by Joao Martins

Monolithic Power Systems Acquires Axign

Monolithic Power Systems (MPS), a global company specializing in high-performance power solutions announced the acquisition of Axign B.V., the Netherlands-based fabless semiconductor startup that specializes in programmable multicore DSP (digital signal processors) and developed the innovative post-filter feedback loop technology for Class-D amplifiers with balanced feedback from the loudspeaker. An exciting development for the small Dutch company and for the audio industry.

July 31, 2023 by Joao Martins

USound Receives Additional Growth Investment Supporting MEMS Speakers Ramp-Up

USound has confirmed that it has received a €10 million Euros minority growth investment supporting product ramp-up for its various MEMS speaker models and accelerating production and design-ins of next-generation true wireless earbuds and hearables. The announcement reflects the company's momentum as first product implementations are now reaching the market, enabling the fast-growing MEMS loudspeaker company to gain further recognition from consumers.

GaN Systems and Axign Unveil 1000W Class-D Heatsinkless Audio Amplifier Design

January 6, 2023 by Joao Martins

GaN Systems and Axign Unveil 1000W Class-D Heatsinkless Audio Amplifier Design

GaN power semiconductors pioneer GaN Systems has once again teamed up with Dutch company Axign to unveil an even more powerful, 1000W Class-D GaN audio amplifier board at CES 2023. The new reference design merges best-in-class technologies from GaN Systems and Axign to enable unique audio systems that are smaller, more efficient, and offer better audio quality. The design is ideal for automotive, professional, and prosumer audio applications.

Nuvoton ICs with Integrated Klippel Controlled Sound - New Possibilities for Speaker Design

September 22, 2022 by Mike Klasco

Nuvoton ICs with Integrated Klippel Controlled Sound - New Possibilities for Speaker Design

What more could speaker system designers want? How about not just to protect the speaker from overload, but enable the speaker to play louder with reduced bass distortion? Mike Klasco writes about his experience working with Nuvoton smart amps with integrated Klippel Controlled Sound (KCS) technology. Now in mass production and offering new possibilities for speaker design. First product examples are now available in the market.

Magnachip Introduces High-Performance Synchronous Boost Converter for Battery-Powered Speakers

March 15, 2022 by Cristina Costa

Magnachip Introduces High-Performance Synchronous Boost Converter for Battery-Powered Speakers

Magnachip Semiconductor Corporation has released a synchronous boost converter with a new architecture of high-side and low-side switches that achieves a high efficiency to support for a variety of applications, including Bluetooth speakers and other battery-operated devices. The new synchronous boost converter is equipped with a fast transient response to reduce output voltage fluctuations in a short response time for stable power supply, making it ideally suited for devices which can exhibit significant current variations.

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