Power amps can be an important connecting element in between the audio equipment as well as the speakers. In case you're looking for a new amp or you are excited about finding out additional facts about how stereo amps get the job done, read through the next few paragraphs for you to have a much better knowledge of the inner workings of power amps.
An audio amp will take a relatively low-level audio signal and magnify it enough to drive a speaker and simultaneously convert the impedance of the signal. A normal output impedance of an audio source may be several kiloOhms. If you were to connect the source correctly to your loudspeaker, just a small portion of the music signal would actually be driving the loudspeaker due to the high impedance of the music source. Even so, having an amp between your source and the loudspeaker, almost all of the signal which will come from the amplifier is being used in order to drive the transducer of the speaker.
The quality of sound which you can get from your speaker depends a great deal on the stereo amplifier itself and the quality of the loudspeaker. Probably, whenever you buy a new power amplifier, the topology of your amplifier is a "Class-D" topology. This particular amplifier topology provides very good energy efficiency. Therefore, almost no power is wasted by the amp. Having a large energy performance, the amplifier may be produced extremely small. Actually, you will find miniature stereo amplifiers in the marketplace that are no bigger than a deck of cards. Such music amps normally utilize their own enclosure to help radiate any dissipated energy. Sound amps with a higher wattage usually have ribs in their enclosure which allow for better ventilation.
If you are an audiophile and require the greatest quality of sound then Class-D amps most likely are not the correct choice. This is because Class-D amplifiers employ a digital switching stage along with modulators. These kinds of components can bring about some amount of music distortion. However, music distortion might not invariably cause terrible sound since tube amplifiers, for example, additionally have got a relatively big level of distortion yet still are favored among audiophiles. Some people prefer music amplifiers which bring about a certain amount of distortion provided that the higher harmonic audio components display a consistent reduction with larger frequencies.
Class-A power amplifiers in addition to Class-AB amps usually have got much less distortion than switched-mode power amps. This is because all of the stages in the amplifier use analog technology. The key downside of analog audio amps compared with switching amps is the small power performance. Since analog sound amplifiers dissipate a great deal of energy as heat, there must here be a set of mechanism for the heat to radiate. This is usually achieved with an electrical fan. Yet another choice is to utilize heat sinks. These heat sinks typically make the amplifier fairly large.
Be careful about what type of speaker you connect to your amplifier because speakers with extremely low impedance may do some severe damage to the amplifier. In addition, stay away from hooking up speakers having an impedance that is a lot bigger than the maximum rated impedance considering the fact that you won't get the maximum amount of wattage from the amp in that case.