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Square-Law class-A: a family of efficient class-A power amplifiers
It is well known that Class-A gives the best sound quality in audio power amplifiers but the efficiency is so low that it is impractical to build much more than...
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A flexible 2/4/8 channel remote level control
Project21, described elsewhere by Jean-Claude Gaertner, needed a flexible level control system for up to 4 amplifiers actively-driving speakers in at least 2...
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Zen -> Cen -> Sen - Evolution of a Minimalistic IV Conversion Circuit
This article has been inspired by previous work by LC Audio, Leach and Nelson Pass. Patrick was intrigued by the operation of the Leach circuit as a current conveyor...
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Simple Loudspeaker Correction Filters
Active filter stages having two (usually complex) poles and two (usually complex) zeroes can be very useful in applications such in active loudspeakers for correcting...
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The Ultra-Linear Power Amplifier - An adventure between triode and pentode
TWhen Rudolf Moers discovered tube amplifiers, he could not find a good book that explained various concepts like the Ultra-Linear circuit, from a theoretical as well...
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Book review - The Design of Active Crossovers by Douglas Self
Book review - The Design of Active Crossovers by Douglas Self Castor-Perry Kendall (aka The Filter Wizard) reviews Douglas Self's last work The Design of Active...
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Book review - Fundamental Amplifier techniques for Electron Tubes by Rudolf Moers
Book review - Fundamental Amplifier techniques for Electron Tubes by Rudolf Moers Vol 2
Guido Tent
Guido presents an extensive review of Rudolf Moers...
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Guest Editorial - Digital Audio: Progress, Stagnation and Regression
Guest Editorial - Digital Audio: Progress, Stagnation and Regression Gary Galo Gary offers an insightfull review of the history of digital audio developent from the...
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A New Amplifier Topology With Push-Pull Transimpedance Stage
In this article Samuel reviews existing transimpedance stage configurations, and then introduces an amplifier topology which uses a novel push-pull transimpedance...
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SIT Nemesis!
In Linear Audio Vol 0, Nelson Pass paid tribute to the classical single-ended transformer-coupled triode amplifier with the Arch Nemesis. Inspired by Jean Hiraga'...
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