Recent wireless speakers come in all shapes and sizes. Finding the perfect type for your application can often be tough. There is a large number of different names and technical jargon describing speaker performance. In this article, I am going to take a closer look at one of the most fundamental of these terms: “loudspeaker output power”. This term is also recognized as “speaker wattage”.
But how do these numbers relate to how the speaker sounds and how are these to be interpreted? Next I will explain the “output power” rating of speakers. If you have a small room then you don’t need much more than several watts. For best music quality, you may want to get a loudspeaker which offers bigger power than you need since a lot of loudspeakers are going to show increasing distortion as the audio power goes up. Please note that often the peak power that your amp may deliver to your loudspeakers will depend on the impedance of your loudspeakers which is typically between 4 and 8 Ohms. An audio amplifier that has a fixed internal supply voltage will have a maximum output voltage swing that is limited by that supply voltage. If you are driving an 8-Ohm loudspeaker then your amp must deliver twice the output voltage than when driving a 4-Ohm loudspeaker to provide the same level of output power to your loudspeaker. As a result often maximum output wattage is shown for a particular loudspeaker impedance.