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Over the years in the audio industry, I have made numerous attempts to explain some of the concepts used with regard to speaker/amplifier power. Most are summarised below, with links to some of the articles covering each topic in more detail. If you’re serious about sound, and curious about power, these are well worth a […]

What does RMS actually mean? RMS stands for Root Mean Square. It is a mathematical method, not a type of power. It is normally applied to voltage or current, but for many years it has been used in the audio industry to describe amplifier and loudspeaker power. Why? Simply because it was the best available […]

AES Power, Program Power, and Amplifier Power Explained Power ratings in audio are confusing because they try to describe something that is constantly changing. Music is not a steady signal, yet power ratings are often presented as if everything operates at a fixed level. To make sense of AES power, program power, and amplifier power […]

What’s up with the Watts? Choosing the right loudspeaker driver can feel like a minefield, especially if you’re new to PA sound. One of the most confusing areas is power ratings, usually quoted in watts. To make matters worse, advances in materials and testing standards have seen many drivers increase their quoted power ratings by […]

Pe – Power Handling Capacity Pe represents the thermal power handling capacity of a speaker driver, measured in watts (W). It indicates how much continuous power the voice coil can handle without overheating or suffering permanent damage. The test is done in a controlled environment with specific cabinet volume and controlled room temperature. The test […]