All items tagged with George Ntanavaras (28)

Speaker Builder: Open-Baffle Subwoofer Simulation with Akabak

December 11, 2024 by George Ntanavaras

Speaker Builder: Open-Baffle Subwoofer Simulation with Akabak

Confronted with the impossibility to conduct reliable measurements in the low-frequency domain for his DIY speaker project, George Ntanavaras explores the alternative of relying solely on simulation software. To validate the design of an open-baffle subwoofer using the AKABAK software, created by German company R&D Team, he also explores the transition from measurements to simulation. His experiments contrast the near-field response measurements of his loudspeaker with the accuracy of the simulation using AKABAK.

Discover New Dimensions of Sound in audioXpress November 2024

October 11, 2024 by audioXpress Staff

Discover New Dimensions of Sound in audioXpress November 2024

This November 2024 issue of audioXpress explores perspectives on signal processing, and sound reproduction. Read a review of the PSI Audio AVAA C214 digital active bass absorber, learn about the exciting possibilities of Audioscenic's Amphi Technology and how to explore the Boundaries of Active Noise Cancellation. J. Martins interviews Andreas Ehret from Dolby Laboratories. Expanding on speakers, we explore Field Coil speaker drivers, Non-Linear Amplitude Modulation distortion and more.

audioXpress September 2024 Is Live. Make Smart Audio Moves!

August 12, 2024 by audioXpress Staff

audioXpress September 2024 Is Live. Make Smart Audio Moves!

There's a lot of knowledge in audioXpress September 2024. There's a residential installation and home theater Market Update, and a review of the Dayton Audio iMM-6C USB-C Test Microphone. George Ntanavaras shares what he learned using AKABAK simulation software, and Charlie Laub explains all about Derived from Elliptic crossover filters. Read Jan Didden's interview with Joachim Gerhard discussing Low Noise Phono Stages, and learn how to build a Moving-Coil Phono Preamp designed by Sam Dulaney. And much more.

Measure Your Audio and Evolve Your Design Skills with audioXpress March 2024

February 12, 2024 by audioXpress Staff

Measure Your Audio and Evolve Your Design Skills with audioXpress March 2024

The March 2024 issue of audioXpress includes an overview of the latest Audio Test and Measurement solutions, a review of the Listen SoundCheck 21 and AmpConnect 621 test suite, and a tribute to 20 years of Room EQ Wizard (REW). Learn how to build a True-RMS Voltmeter and what's behind the myth of Second Harmonic Distortion. Learn how motion feedback technologies can be applied to speakers, and how our hearing process affects our audio listening experiences, and much more. Dive in now!

Spatial, Immersive, Inside and Out Automotive Sound in audioXpress June 2023

May 11, 2023 by audioXpress Staff

Spatial, Immersive, Inside and Out Automotive Sound in audioXpress June 2023

audioXpress June 2023 combines must-read articles on Automotive Audio, essential knowledge, cutting-edge R&D, practical build projects and much more. Learn about the latest innovations and sound design for Electric Vehicles. Read about DSP tuning in automotive audio. Learn about Audioscenic's extraordinary journey in 3D audio beamforming technology, build a new signal amplifier and processor for the ACH-01 Accelerometer, and much more.

You Can DIY!: PhL-100 - Α High-Quality MM Phono, Line, and Headphone Amplifier

May 3, 2023 by George Ntanavaras

You Can DIY!: PhL-100 - Α High-Quality MM Phono, Line, and Headphone Amplifier

Focusing on a practical, hands-on perspective, George Ntanavaras, details the design and construction of a phono preamplifier for Moving Magnet (MM) cartridges and a Line/Headphone amplifier with two additional inputs and volume control. All the amplification stages are based on top-quality audio op-amps such as Texas Instruments' OPA1642 for the phono stage and OPA1612 for the Line/Headphone stage. Almost all the components of the device are contained on a single PCB for easy construction. This article was originally published in audioXpress, February 2022

Wireless Audio, Installation Audio, and Multiroom Improvements in audioXpress December 2022

November 11, 2022 by audioXpress Staff

Wireless Audio, Installation Audio, and Multiroom Improvements in audioXpress December 2022

Get the full update on audio technologies for Installation, Distributed Audio, and Multiroom, learn how the Klippel NFS was used for measuring Holoplot's X1 Matrix Array compensation algorithm capabilities, and read about the multiple technologies Improving Wireless Audio, including using Ultra-Wideband (UWB) for high-quality wireless audio streaming. Learn how to calculate RIAA parts values for phono amps, discover lesser-known tubes used for audio applications, and much more.

audioXpress September 2022 Speaker Focus Issue Now Available

August 11, 2022 by audioXpress Staff

audioXpress September 2022 Speaker Focus Issue Now Available

The September 2022 Speaker Focus issue of audioXpress discusses speaker design and testing tools and features two fascinating speaker R&D stories on the Holoplot X1 Matrix Array and Motion Feedback Desktop Subwoofers for nearfield studio application. Geoff Hill explains the latest IEC loudspeaker measurement standards, Roger Shively reports from the AES 2022 Automotive Audio conference, Christoph Sladeczek writes about Audio Objects as Platform Technology in Vehicles, and much more.

audioXpress February 2022 Captures the Sound of Today

January 11, 2022 by audioXpress Staff

audioXpress February 2022 Captures the Sound of Today

The February 2022 edition of audioXpress is now available and features our annual Market Update on Microphone technology. Vikrant Singh Tomar discusses TinyML and Voice Recognition Technology On the Edge, Richard Honeycutt writes about Quantification of Speech Intelligibility, and Mike Klasco expands on audio applications for Haptic Devices. George Ntanavaras builds a phono and line/headphone amplifier project, Brian Bylenok proposes a refined Current Feedback Headphone Amplifier, and Richard Honeycutt reminds us that Tube Power Amps also have Classes. Now available in print and online.

You Can DIY! The PR-3 - A High-Quality Stereo Preamplifier

May 27, 2021 by George Ntanavaras

You Can DIY! The PR-3 - A High-Quality Stereo Preamplifier

For our readers who like to get hands-on with DIY projects, in this article George Ntanavaras describes the design and the construction of his PR-3 stereo analog preamplifier, offering three high-level unbalanced stereo inputs and two unbalanced stereo outputs. Most of the components for this design are contained on a single PCB. This article was originally published in audioXpress, January 2019.

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