Double amplifier power does not double the volume

This article logically shows the relationship between amplifier power, SPL and loudness. It includes a level difference exercise and a gain calculator.

Speaker Impedance Changes Amplifier Power

Speaker impedance changes amplifier power output. In fact, your amplifier power could be nearly half or double its capacity - depending on the impedance...

Understanding Audio Levels

A basic understanding of the general audio levels mentioned in this article will help you avoid the common mistakes often made when connecting audio...

Understanding Decibels (part 1)

Decibels are widely used in audio, and often misunderstood. These articles give a practical understanding on using decibels in audio work.  But first, some...

Understanding Acoustic Feedback

Acoustic feedback it that annoying loud continuous tone you get when the sound system is not set up or operated properly. Acoustic feedback can...

Understanding Speaker Sensitivity

Speaker sensitivity is a measurement of how well a speaker converts the amplifier power to to acoustic energy. In others words, how loud the...

Understanding Microphone Sensitivity

What do you understand about microphone sensitivity? Of late I have seen a number of people miss-interpret the specifications of microphones, especially when it...

Understanding Speaker Impedance

Speaker impedance is often presented as a complex subject and therefore is either ignored or misunderstood. A basic understanding of speaker impedance is not...

Understanding Decibels (part 2)

In the first article we saw that a decibel is not a fixed unit, rather, it is a ratio between two levels.  A decibel...

Understanding Audio Frequency

Every sound we hear is at a certain frequency. When we say someone has a deep voice, we are describing a voice producing low...