When purchasing a new amplifier, you most likely will take a look at the technical specs. One often found specification is the frequency response. This parameter even though vital won't tell the entire story concerning how great the amplifier is going to sound. You possibly will not fully understand how the frequency response is determined. I'll explain what exactly this specific term means. I hope you'll be able to make a much more knowledgeable purchasing decision.
The truth is, an amplifier with a frequency response from 10 Hz to 30 kHz can in fact have much poorer audio quality than an amplifier which provides a frequency response from 20 Hz to 15 kHz. Different makers appear to utilize different ways in order to determine frequency response. The most popular method is to describe the frequency response as the frequency range within which the amp will have rather constant gain having a greatest decrease of 3 decibel (dB). Normally the drop in amplification is highest at the lower and upper frequency.
However, the frequency response sometimes is utilized to misinform consumers by means of stretching the frequency range a good deal past the range in which the amplifier still operates properly and also covers up the fact that the amplifier might not be linear. A complete frequency response graph, on the other hand, will demonstrate whether or not there are any peaks and valleys and in addition show how the frequency response is to be interpreted. Also you can desire to demand a phase response chart which also presents essential clues concerning the sound quality. You also need to look at the circumstances under which the frequency response was calculated. You normally are not going to find any details about the measurement conditions, however, in the maker's data sheet. One condition which might influence the frequency response is the impedance of the loudspeaker attached to the amp. Normal speaker impedances range from 2 to 16 Ohms. The lower the loudspeaker impedance the higher the load for the amp.
The circumstances under which the frequency response was determined may also be necessary to understand. One condition which can effect the frequency response is the impedance of the loudspeaker connected to the amp. Normal loudspeaker impedances range from 2 to 16 Ohms. The lower the speaker impedance the greater the strain for the amplifier.
Several amp topologies offer a mechanism to compensate for variations in the amplifier gain with various speaker loads. One of these methods utilizes feedback. The amplifier output signal after the internal lowpass is input to the amplifier input for comparison. If not developed correctly, this approach may cause instability of the amp though. Another approach makes use of audio transformers between the power stage of the amp and several outputs. Every output is designed to attach a different speaker load. This approach makes certain that the amplifier is going to be loaded equally and also increases amplifier efficiency.
The truth is, an amplifier with a frequency response from 10 Hz to 30 kHz can in fact have much poorer audio quality than an amplifier which provides a frequency response from 20 Hz to 15 kHz. Different makers appear to utilize different ways in order to determine frequency response. The most popular method is to describe the frequency response as the frequency range within which the amp will have rather constant gain having a greatest decrease of 3 decibel (dB). Normally the drop in amplification is highest at the lower and upper frequency.
However, the frequency response sometimes is utilized to misinform consumers by means of stretching the frequency range a good deal past the range in which the amplifier still operates properly and also covers up the fact that the amplifier might not be linear. A complete frequency response graph, on the other hand, will demonstrate whether or not there are any peaks and valleys and in addition show how the frequency response is to be interpreted. Also you can desire to demand a phase response chart which also presents essential clues concerning the sound quality. You also need to look at the circumstances under which the frequency response was calculated. You normally are not going to find any details about the measurement conditions, however, in the maker's data sheet. One condition which might influence the frequency response is the impedance of the loudspeaker attached to the amp. Normal speaker impedances range from 2 to 16 Ohms. The lower the loudspeaker impedance the higher the load for the amp.
The circumstances under which the frequency response was determined may also be necessary to understand. One condition which can effect the frequency response is the impedance of the loudspeaker connected to the amp. Normal loudspeaker impedances range from 2 to 16 Ohms. The lower the speaker impedance the greater the strain for the amplifier.
Several amp topologies offer a mechanism to compensate for variations in the amplifier gain with various speaker loads. One of these methods utilizes feedback. The amplifier output signal after the internal lowpass is input to the amplifier input for comparison. If not developed correctly, this approach may cause instability of the amp though. Another approach makes use of audio transformers between the power stage of the amp and several outputs. Every output is designed to attach a different speaker load. This approach makes certain that the amplifier is going to be loaded equally and also increases amplifier efficiency.
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