All items tagged with moving coil (35)

Back EMF Phase Relationships in Moving-Coil Loudspeakers - Part 4

January 23, 2020 by Andy Lewis

Back EMF Phase Relationships in Moving-Coil Loudspeakers - Part 4

In this final article of the four-part series, Andy Lewis expands upon the Back EMF concepts hinted at in the previous three articles in this series. This article explores the Electrical and Newtonian filters and their intersections, observations on reactive parallel filters as pertains to Back EMF and energy losses. The theories can be applied to virtually all areas of loudspeaker design. This article was originally published in audioXpress, November 2018.

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Back EMF Phase Relationships in Moving-Coil Loudspeakers - Part 3

January 15, 2020 by Andy Lewis

Back EMF Phase Relationships in Moving-Coil Loudspeakers - Part 3

In the third article of the four-part series, Andy Lewis continues his fascinating exploration of Back EMF Phase Relationships in Moving-Coil Loudspeakers. The author discusses what causes Back EMF to simulate inductor, capacitor, or resistor (LCR) components, and explores the concept of slip, in order to explain how and why it causes the impedance to be inductive, resistive, or capacitive, depending on frequency. This article was originally published in audioXpress, July 2018

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Back EMF Phase Relationships in Moving-Coil Loudspeakers - Part 2

January 8, 2020 by Andy Lewis

Back EMF Phase Relationships in Moving-Coil Loudspeakers - Part 2

In this article series, Andy Lewis explores the generation of Back EMF in the region of a loudspeaker’s resonance. In this second article of the four-part series, he performs simple “thought experiments” to make qualitative observations about the activity of a moving-coil driver in the region of its resonance. This article was originally published in audioXpress, June 2018

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Back EMF Phase Relationships in Moving-Coil Loudspeakers - Part 1

December 26, 2019 by Andy Lewis

Back EMF Phase Relationships in Moving-Coil Loudspeakers - Part 1

In this article, Andy Lewis explores the generation of Back EMF in the region of a loudspeaker’s resonance. He also demonstrates a method for calculating the position of the moving assembly (or “cone”) relative to input signal, using complex impedance measurements. This article - part of a four part series - was originally published in audioXpress, May 2018

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McIntosh Announces Most Versatile Tube Preamp Ever with New DA2 Digital Module

August 16, 2019 by audioXpress Staff

McIntosh Announces Most Versatile Tube Preamp Ever with New DA2 Digital Module

McIntosh announced the C2700 Vacuum Tube Preamplifier, a highly versatile 16-input preamp which combines 70 years of tube expertise with the very latest high resolution digital audio technology, courtesy of the company’s new, upgradeable DA2 Digital Audio Module (DAC). A reference in home entertainment and high quality audio for 70 years, McIntosh designed a highly versatile, featured-packed tube preamp for today’s modern music lover.

Chord Electronics Introduces Advanced Microprocessor-Controlled Phono Preamp

May 22, 2019 by audioXpress Staff

Chord Electronics Introduces Advanced Microprocessor-Controlled Phono Preamp

As part of its ongoing 30th-anniversary celebrations in 2019, Chord Electronics has unveiled Huei, an all-new phono preamp that distills three decades of amplifier development and audio engineering expertise into a high-performance yet space-saving chassis. Entirely conceived, engineered and manufactured in Great Britain, the new microprocessor-controlled Chord Huei has been carefully designed to provide turntables with the same high standards of amplification the company has become known for over the past 30 years.

Parasound Launches Zphono XRM for Improved Vinyl Experiences

December 21, 2018 by audioXpress Staff

Parasound Launches Zphono XRM for Improved Vinyl Experiences

For those still in the market for a decent phono preamplifier, Parasound just announced a new model that's a big step up from its entry-level Zphono. The new Parasound Zphono XRM phono preamplifier offers higher performance, dual-input MM and MC, with XLR balanced outputs, adjustable MC loading, rumble filter, and mono/stereo switch. Price wise, Parasound's new $599 Zphono XRM phono preamplifier bridges the gap between its entry-level $200 Zphono and the internationally acclaimed $1,495 Halo JC 3 Jr.

The MC100 - A High-Quality Moving Coil RIAA Preamplifier

October 31, 2018 by George Ntanavaras

The MC100 - A High-Quality Moving Coil RIAA Preamplifier

In this project article for audioXpress, George Ntanavaras describes the design and construction of a high-quality RIAA preamplifier for moving coil cartridges based on high-quality Analog Device AD797 op-amps designed for low-noise audio applications and driven from very low source impedance. This article was originally published in audioxpress, March 2014.

A New Turntable from McIntosh and It's Not That Expensive

March 15, 2018 by audioXpress Staff

A New Turntable from McIntosh and It's Not That Expensive

McIntosh has unveiled a new turntable that brings its famous McIntosh sound and build quality at a new "low price" point. The new MT2 was announced with a suggested retail price of $4,000, which his significantly less than the brand's flagship MT5 ($8,000) and MT10 ($6,000). Of course you don't get the glowing green plate, but according to the company, you get the latest turntable technology with the New York giant’s legendary aesthetic, design and build quality.

Parasound Introduces More-Affordable Halo Phono Stage Preamplifier

October 11, 2017 by audioXpress Staff

Parasound Introduces More-Affordable Halo Phono Stage Preamplifier

Parasound has introduced a more-affordable phono preamplifier for a new generation of analog LP and turntable enthusiasts. The Parasound Halo JC 3 Jr. (aka 'Junior') reflects the company's latest collaboration with the legendary Vendetta designer, John Curl, and circuit-board wizard, Carl Thompson. Introduced at the Rocky Mountain Audio Fest 2017 show, the new Parasound Halo JC 3 Jr. stereo phono preamplifier is about half the price of the company's $2,995 premium dual-mono Halo JC 3+.

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