The frequency response is just about the most frequently found parameter to define audio amps. Nonetheless, it may regularly be deceptive and might possibly not provide a good indication of the sound quality. I will describe the meaning of this expression and even give some suggestions on how to interpret it whilst searching for an amplifier. An amplifier is going to amplify an audio signal which is within the frequency response range. If the frequency range is 20 Hz to 20 kHz for example, the amp would be able to amplify all signals with a frequency greater than 20 Hz and lower than 20 kHz. You could possibly be tempted to choose an amplifier that gives the greatest frequency response. On the other hand, there's a lot more to understanding an amplifier's overall performance than just understanding this simple range.
An amp will magnify an audio signal which is inside the frequency response range. Normally a lower and upper frequency are given, for instance 20 Hz - 20 kHz. This particular spec suggests that the amp has the ability to amplify audio inside this frequency range. Yet, there is certainly much more to understanding the amplifier's functionality than just considering these numbers. The reality is, an amplifier that has a frequency response from 10 Hz to 30 kHz can actually have much worse audio quality than an amplifier that has a frequency response from 20 Hz to 15 kHz. Different producers seem to utilize different ways in order to determine frequency response. The standard convention is to present the frequency range inside which the gain is going to decrease at most 3 dB from the nominal gain.
Nevertheless, several manufacturers disregard this particular established practice. They push the lower frequency and upper frequency to where the amplifier barely has any gain. Additionally, these numbers tell absolutely nothing about precisely how linear the amp is operating within this range. Preferably you should try to obtain a frequency response chart from the supplier. In this diagram, you will find how the amp functions inside the frequency response range. You may also spot any peaks along with valleys the amplifier might have. You may additionally desire to request a phase response diagram that offers vital hints concerning the sound quality. In order to better understand the frequency response behavior of a specific model, you should try to find out under which circumstances the response was calculated. You'll find these details in the data sheet of the amp. However, many makers will not publish those in which case you might need to get in touch with the manufacturer directly. The fact is that numerous amplifiers will function in a different way with different speaker loads. This is mainly because that various loudspeaker loads can cause changes to the behavior of the output power stage of the amp.
The conditions under which the frequency response was measured are also necessary to fully understand. The fact is that lots of amps are going to behave in a different way with different speaker loads. This is due to the fact that various loudspeaker loads will cause changes to the behavior of the output power stage of the amplifier. The frequency response of Class-D amps shows the greatest change with different speaker loads because of the integrated lowpass filter that removes switching noise from the amplifier's signal. A varying speaker load is going to affect the filter response to a point. Usually the lower the loudspeaker impedance the lower the maximum frequency of the amp. In addition, the linearity of the amplifier gain will be determined by the load.
Various amps include feedback to compensate for changes in gain as a result of different connected loads. One more approach uses audio transformers between the power stage of the amplifier and various outputs. Each output is designed to connect a different loudspeaker load. This method ensures that the amplifier will be loaded equally and in addition improves amplifier efficiency.
An amp will magnify an audio signal which is inside the frequency response range. Normally a lower and upper frequency are given, for instance 20 Hz - 20 kHz. This particular spec suggests that the amp has the ability to amplify audio inside this frequency range. Yet, there is certainly much more to understanding the amplifier's functionality than just considering these numbers. The reality is, an amplifier that has a frequency response from 10 Hz to 30 kHz can actually have much worse audio quality than an amplifier that has a frequency response from 20 Hz to 15 kHz. Different producers seem to utilize different ways in order to determine frequency response. The standard convention is to present the frequency range inside which the gain is going to decrease at most 3 dB from the nominal gain.
Nevertheless, several manufacturers disregard this particular established practice. They push the lower frequency and upper frequency to where the amplifier barely has any gain. Additionally, these numbers tell absolutely nothing about precisely how linear the amp is operating within this range. Preferably you should try to obtain a frequency response chart from the supplier. In this diagram, you will find how the amp functions inside the frequency response range. You may also spot any peaks along with valleys the amplifier might have. You may additionally desire to request a phase response diagram that offers vital hints concerning the sound quality. In order to better understand the frequency response behavior of a specific model, you should try to find out under which circumstances the response was calculated. You'll find these details in the data sheet of the amp. However, many makers will not publish those in which case you might need to get in touch with the manufacturer directly. The fact is that numerous amplifiers will function in a different way with different speaker loads. This is mainly because that various loudspeaker loads can cause changes to the behavior of the output power stage of the amp.
The conditions under which the frequency response was measured are also necessary to fully understand. The fact is that lots of amps are going to behave in a different way with different speaker loads. This is due to the fact that various loudspeaker loads will cause changes to the behavior of the output power stage of the amplifier. The frequency response of Class-D amps shows the greatest change with different speaker loads because of the integrated lowpass filter that removes switching noise from the amplifier's signal. A varying speaker load is going to affect the filter response to a point. Usually the lower the loudspeaker impedance the lower the maximum frequency of the amp. In addition, the linearity of the amplifier gain will be determined by the load.
Various amps include feedback to compensate for changes in gain as a result of different connected loads. One more approach uses audio transformers between the power stage of the amplifier and various outputs. Each output is designed to connect a different loudspeaker load. This method ensures that the amplifier will be loaded equally and in addition improves amplifier efficiency.
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