All items tagged with Purifi Audio (59)

NAD Electronics Introduces Next-Generation Masters M33 V2 and M23 V2 Amplifiers

May 14, 2025 by Joao Martins

NAD Electronics Introduces Next-Generation Masters M33 V2 and M23 V2 Amplifiers

NAD Electronics announced the release of two updates to its Masters Series: the M33 V2 BluOS Streaming Amplifier and the M23 V2 Stereo Power Amplifier. These next-generation models build on the legacy of the original M33 and M23 with cutting-edge digital architecture, refined sonic performance, and enhanced connectivity. An upgrade that expands on the successful models that have proven to be favorites for custom integrators, premium audio dealers, and discerning listeners.

Speaker Box Alignments from Numerical Optimization - The Quasi-Chebyshev Alignment

April 2, 2025 by Lars Risbo

Speaker Box Alignments from Numerical Optimization - The Quasi-Chebyshev Alignment

After seeing many speaker designers returning to trial-and-error approaches that seem to forget the historical work and analytical approach, Lars Risbo decided to explore numerical optimization to synthesize attractive alignments both for reflex and passive radiator box types. This reference article basically expands on Claus Futtrup's "Loudspeaker Bass Reflex Alignments" article series published in audioXpress, and expanded with dedicated articles in Voice Coil.

Fresh From the Bench: Purifi 1ET9040BA Balanced Class-D Amplifier Module

March 19, 2025 by Jan Didden

Fresh From the Bench: Purifi 1ET9040BA Balanced Class-D Amplifier Module

The Purifi 1ET9040BA balanced Class-D amplifier module, a Bridge-tied-load (BTL) output stage, is the second product in the company's Eigentakt range. Following a conversation with members of Purifi about the amplifier's audio performance being hard to measure even with the best available test equipment, Jan Didden, in collaboration with Rens Tellers, took up the challenge, with invaluable support from Audio Precision's parent corporation Axiometrix.

Neurochrome Launches Universal Purifi Input Buffer

March 19, 2025 by audioXpress Staff

Neurochrome Launches Universal Purifi Input Buffer

Neurochrome, the Canadian audio electronics company created by Tom Christiansen, just announced an interesting new upcoming product for builders and all DIY enthusiasts. A new universal input buffer board, designed to extract the best possible performance from Purifi and Hypex Class-D amplifier modules. Improving on the Purifi EVAL1 and the Hypex NC500 evaluation board, the new universal single-channel (mono) design provides a differential output for the amplifier, even if the input to the buffer is single-ended.

Test Bench: Purifi Audio PTT10.0X04-NAB-01 10” Midbass Woofer

January 29, 2025 by Vance Dickason

Test Bench: Purifi Audio PTT10.0X04-NAB-01 10” Midbass Woofer

The eagerly awaited Purifi Audio PTT10.0X04-NAB-01 10" Midbass Woofer is the sixth Purifi driver to be examined in Test Bench. This 4Ω woofer features extensive proprietary technology that includes the constant Sd surround, cone edge stiffening ring, and low magnetic hysteresis motor design. The PTT10.0X04-NAB-01 exhibits some very unique engineering that can be finally characterized.

audioXpress.com - The Most Popular Stories of 2024

December 27, 2024 by audioXpress Staff

audioXpress.com - The Most Popular Stories of 2024

We looked at the popular articles of 2024 in audioXpress.com (including selected articles from audioXpress and Voice Coil magazines), and we created this Top 11 list of news stories and online articles. As the number of visitors and pageviews registered by audioXpress.com continues to break records every year, visitors from all over the world returned more often to read the more than 10,400 stories available. Which of the topics and stories published online in 2024 were the most popular? Here are the results!

audioXpress January 2025. Innovations in Audio. Product Development. The Best in DIY Audio

December 12, 2024 by audioXpress Staff

audioXpress January 2025. Innovations in Audio. Product Development. The Best in DIY Audio

In this issue we write about some of the most innovative Drivers and Transducers from the past two years. Read about dual-driver true wireless earbuds, and how to assess listening effort inside vehicles. Douglas Self shares his latest findings on Modern Op-Amp Distortion Tests, and René Christensen explores the analytical framework that sustains great simulation techniques. Reviews of the APL Virtuoso v2 Binaural Renderer, and the Purifi 1ET9040BA amplifier module.

Make It Active! Voice Coil October 2024 Is Now Available

October 1, 2024 by audioXpress Staff

Make It Active! Voice Coil October 2024 Is Now Available

In Voice Coil October 2024, Claus Futtrup writes about Compliance Alteration, and Mike Klasco and Nora Wong prepared an updated directory of Integrated Electronics for Loudspeakers. James Croft returns with a "Loudspeaker" patent review, granted to industry veteran Michael Levy, and Vance Dickason focuses solely on the eagerly awaited Purifi Audio PTT10.0X04-NAB-01 10" Midbass Woofer.

September 20, 2024 by Joao Martins

Peter Lyngdorf and Purifi Audio Announce New Radiant Acoustics Speaker Brand

There's a new Danish hifi speaker brand in the market, part of the expanding audio universe created by Peter Lyngdorf, the founder of HiFi Klubben, and co-founder of Purifi Audio. The project was inspired by Henrik Reinholdtsen, the CEO of Nordic Hi-Fi, a direct-to-consumer business that is also part of the HiFi Klubben universe. Radiant Acoustics is now on the market with the Clarity 6.2 passive speaker, using a 6.5" Purifi woofer and a new AMT tweeter, with a custom-designed waveguide, developed by Lars Risbo.

Marantz Launches MODEL 10 Reference Integrated Amplifier

August 30, 2024 by Joao Martins

Marantz Launches MODEL 10 Reference Integrated Amplifier

Marantz unveiled its new 10 Series Collection, which consists of three reference-quality high-end audio stereo products, all designed at the renowned Shirakawa Audio Works in Japan. The series will include the Reference SACD 10 player and the LINK 10n Reference Network Audio Player, which will be released later in 2024. For now, Marantz launched the MODEL 10 Reference Integrated Amplifier, which uses Purifi-licensed Class-D technology.

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