Featured Audio Amplifier Articles Article Archives
Slew Rate in Audio Amplifiers - What Does it Mean?
This article defines what amplifier slew rate is and its real world implications. We also show how to calculate an audio amplifiers slew rate based on bandwidth and power level.
The High Instantaneous Current Spec
We've all seen amplifier companies tout that their amps are "high current". This article explores that topic as well as the history of how the term became popularized by some manufacturers.
How a Class D "Digital" Amplifier Works
Ever wonder how an amplifier works at a very fundamental level? Alan Lofft, Resident Expert of Axiom Audio takes us on a tour of traditional linear amplifiers as well as the newer more sleek Class D…
Attack of the Clone Amplifiers
It’s been a few years since our controversial release of “Attack of the Clone Processors” and we felt it was time for a sequel to our blockbuster hit editorial. Engineering a product from the…
The Truth About Amplifier Power Ratings
Ever wonder why the boom box you bought at Best Buy has a higher power rating than your dedicated two-channel power amplifier? Amplifier power ratings are usually honest in Hi-Fi equipment, but…
10 Things about Audio Amplifiers You've Always Wanted to Know
Alan Lofft, Axiom Audio's Resident Expert, took a series of the most commonly asked questions he received about amplifiers, and transformed his answers into an informative editorial. In this article…
The All Channels Driven (ACD) Amplifier Test
This article explores the All Channels Driven power test popularized by some print magazines and manufacturers. It discusses its relevancy and real world implications.
Switching Amplifiers: The Technology and the Issues
This article started because a good friend of mine dropped a Panasonic SA-XR50 switch-mode amplifier to me for some basic bench test. This article will NOT be a review of that unit, but an…
Switching Amplifier (Class D) Basics
Just today I read on an internet forum a post by a "hot" new manufacturer of class D amplifiers saying that "the only way to solve the interference problem is to put the amplifier in a completely…
The All Channels Driven Amplifier Test Controversy
There has been a lot of controversy on many of the Internet forums regarding power capability of receivers when driving multi-channel speaker systems. Some argue that when a receiver is rated at…
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