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What Is an External Amplifier?
- Oct 24, 2018 -

Most home audio systems and small-scale public address systems instead use passive speakers. These require a separate amplifier that amplifies the audio before it is passed on to the speaker. With hi-fi systems, this is usually built into the unit that houses the various components such as CD player, tape deck and radio. With home cinema, the external amplifier is usually part of a separate device, a receiver, that allows the user to switch between the audio signals of home entertainment equipment such as televisions, cable boxes or games consoles.

Strictly speaking, there is some confusion between the concept of passive and active speakers, and the concept of powered or non-powered speakers. This confusion can mean the uses of the various phrases involved is not always accurate. The confusion lies in the fact that there are two separate operations that can be carried out either in the speaker or in a separate device.

The first of these operations is the amplification of the sound, which is covered by the terms powered and unpowered. The second operation is the splitting of the audio signal into separate frequencies, which are produced by separate parts of the speaker, often known as the tweeter and the woofer. An active speaker system splits the signal before it reaches the speakers, while a passive speaker system leaves the splitting to the speaker itself. It is possible to have a speakerwhich is powered but passive: the most common example is the small speaker systems used for listening to portable music players without headphones.

Anyway, it's help you to enjoy the music sound better .What Is an External Amplifier? Most of people have questions like this , we just hope it will helps you a lot. 

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