Tag Archive for: Amplifiers

Roll your own acoustic source for STI testing

by Steve Liddle

Have you ever thought about building your own acoustic source for STI Testing.  Steve Liddle has done it and he shared the process in this article.

The title doesn’t sound as good as “roll your own Talkbox” … Read more

The Amplifier-to-Loudspeaker Interface

By Pat Brown

Amplifier-to-loudspeaker Interface – is there anything special about hooking an amplifier to a loudspeaker? Here is a brief look at some parameters that can affect the sonic performance of this important interface.

The Ideal Case

Most analog … Read more

30 Years of SynAudCon Synergy

Random Thoughts by Jim Brown

SynAudCon Synergy – Jim Brown takes you on a walk though audio history helps all of us appreciate where we have been and provides a visions for where we are going.

When Brenda asked me … Read more

Impedance Measurement

By Charlie Hughes

Impedance Measurement – Here are some methods and caveats in characterizing the load seen by the amplifier.

To determine the input impedance of a device both the voltage across the device and the current flowing into the … Read more

Product Data Sheets – What should be on product data sheets?

Random Thoughts by Jim Brown

Jim Brown answers this question, “What should be on product data sheets?”  He gives some very insightful information. Thank you Jim!

The full version of Jim’s article includes sections on Intercom and Infrared systems.

It’s … Read more

Loudspeaker Power Ratings – Why all the Fuss About Power?

By Pat Brown

Loudspeaker power ratings is a confusing topic in the audio industry. In this article, Pat brings some clarity.

It is generally accepted that a large loudspeaker power rating is a sign of quality and something to be … Read more

Using Limiters to Help Protect Loudspeakers

By Charlie Hughes

In this article, Charlie Hughes will help you understand how limiters can be used to provide protection from over excursion.

Using limiters to protect loudspeakers is nothing new. In many applications a limiter is placed immediately in … Read more

Target SPL and Required Amplifier Size

By Charles Hughes

This article touches on two things: The required amplifier size so that a given loudspeaker may achieve a target SPL and caution that must be used when driving loudspeakers with the very large amplifiers.

In a previous … Read more

Which Impedance? Nominal Minimum / Maximum Average

By Pat Brown

This article addresses three dominant reasons for measuring the impedance of a loudspeaker.

The impedance of a loudspeaker characterizes the opposition that it presents to current flowing from the amplifier. The impedance is both complex and frequency-dependent. … Read more

Meaningful Metrics – The Use and Abuse of Loudspeaker Power Ratings

By Pat Brown

Pat Brown brings some clarification to loudspeaker Power Ratings.


A few years have passed since I last produced an article on this subject. In that time I have continued to power test loudspeakers of all types … Read more