All items tagged with audio amplifiers (134)
Interview: An Afternoon with Robert Munnig Schmidt
June 12, 2024 by Jan Didden

Interview: An Afternoon with Robert Munnig Schmidt

Robert Munnig Schmidt is intrinsically connected with advanced motion systems and motional feedback applications. He is now retired from his own consultancy business, following an outstanding career that includes key R&D positions at Philips, being part of the ASML founding team, and teaching Mechatronic System Design at the Delft University of Technology. In this interview, Schmidt revisits the theory and practice of motional feedback, silicon wafer steppers, voice coils, Class-D amplifiers, and much more.
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AudioControl Reinvents Distributed Audio with New Dual-Mode GaN-Based Amplifier Design
June 12, 2024 by audioXpress Staff

AudioControl Reinvents Distributed Audio with New Dual-Mode GaN-Based Amplifier Design

AudioControl has announced the introduction of three highly versatile CM Series amplifiers using GaN technology and a new proprietary circuit design for compatibility with both 70-volt and 4/8-Ohm loudspeakers (Dual Mode). These new CM Series amplifiers offer DSP control, matrixing capabilities, Dante digital audio networking and all the critical features integrators must have to satisfy every imaginable application including superior audio performance and build quality.
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Orchard Audio Releases New 500W GaN Monoblock Audio Amplifier
June 4, 2024 by Joao Martins

Orchard Audio Releases New 500W GaN Monoblock Audio Amplifier

Following the launch of its Starkrimson 150W monoblock, Orchard Audio now announced its new state-of-the-art, gallium nitride (GaN) 500W monoblock audio amplifier. The Starkrimson Mono Ultra Premium represents the culmination of Orchard Audio's - and its founder's Leonid (Leo) Ayzenshtat - relentless pursuit of new approaches for audio. This meticulously crafted monoblock amplifier leverages GaN technology and unique Class-D design to deliver unparalleled power, detail, and clarity.
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Infineon Announces Next Generation CoolGaN Transistor Families
May 31, 2024 by Joao Martins

Infineon Announces Next Generation CoolGaN Transistor Families

Infineon Technologies announced two new generations of high voltage (HV) and medium voltage (MV) CoolGaN devices which now enable Gallium Nitride (GaN) to be used in voltage classes from 40V to 700V in a broader array of applications that help drive digitalization and decarbonization. These two product families, now expanded with the portfolio that resulted from the GaN Systems acquisition, are manufactured on high performance 8-inch in-house foundry processes in Kulim (Malaysia) and Villach (Austria).
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New EPC High-Power GaN-Based Class-D Audio Reference Design Now Available
May 17, 2024 by Joao Martins

New EPC High-Power GaN-Based Class-D Audio Reference Design Now Available

Encouraging developers to design high-performance Class-D audio amplifiers leveraging GaN FETs, EPC has launched the new EPC9192 reference design enabling high power and high efficiency Class-D audio amplifiers in a modular design that is ideal for customization. The EPC9192 showcases the high performance capabilities of EPC's 200V, EPC2307 eGaN FETs in a ground-referenced, split dual supply Single-Ended (SE) design, delivering an impressive 700W per channel into a 4Ω load.
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Input-Output Impedance Matching – Or Not
April 18, 2024 by Jan Didden

Input-Output Impedance Matching – Or Not

In analog audio, you often must connect a source to a “receiver” unit. Pre-amp to power amp, phono preamp to an active crossover, the crossover to the power amp, that sort of stuff. Each of these units has an input impedance and an output impedance spec. I often get questions like: “My power amp has 20kΩ input impedance, my preamp has 100Ω output impedance, and maximum load is specified as 10kΩ. Will that work together or will I break something?”. Jan Didden explains all about Input-Output Impedance Matching.
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Goodix Technology Launches Next Generation Smart Amplifier for Mobile Applications
April 8, 2024 by audioXpress Staff

Goodix Technology Launches Next Generation Smart Amplifier for Mobile Applications

Goodix Technology launched a new generation smart amplifier targeting mobile audio designs. The new TFA9865 device leverages a proprietary, fully digital architecture and advanced manufacturing processes to improve audio performance. With extremely compact dimensions of just 2.2x2.2mm², the TFA9865 audio amplifier establishes a benchmark for the audio industry, offering higher power efficiency, and enhanced sound volume with reduced noise.
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A Look Inside Douglas Self’s "Small Signal Audio Design" 4th edition
April 3, 2024 by Jan Didden

A Look Inside Douglas Self’s "Small Signal Audio Design" 4th edition

Whether it is power amplifiers, vinyl reproduction preamplifiers, active crossover filters or, as in this case, small-signal circuits for a very wide range of applications, Douglas Self is one of those authors who consistently has produced reference works about technical audio. You may think that as a fourth edition, it would just be a refinement on the three editions that went before it but Self always adds new material and new insights to make it worthwhile to get this new book.
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Powersoft Reveals Plans for New Headquarters in Florence, Italy
March 20, 2024 by audioXpress Staff

Powersoft Reveals Plans for New Headquarters in Florence, Italy

Powersoft, the audio amplification, signal processing and transducer systems specialist company from Florence, Italy, has announced plans for its new headquarters in the region. The building, an innovative design by renowned architect Alfonso Femia, will also host Powersoft's Human Audio Experience Center. The new headquarters, will centralize all the company's departments and will accommodate the projected increase in the size of the company's workforce.
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You Can DIY! eDD - A Direct-Drive Amplifier for Electrostatic Speakers
February 21, 2024 by Jan Didden

You Can DIY! eDD - A Direct-Drive Amplifier for Electrostatic Speakers

This article details a lifetime project from audioXpress' technical editor Jan Didden. After a successful restoration project of a pair of precious ESL-63 Quad electrostatic speakers, he opted to design and build the eDD, a well-performing high voltage amplifier to directly drive electrostatic speakers. This challenging but successful DIY project with a design goal of 1500V RMS at 20mA RMS over the full audio band, took a while to complete but was a success. This article shares every step of the construction.
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