Considering some of the technical specifications of today's audio amplifiers, one cannot help but be at a loss in trying to compare different models as well as terms, like "t-amp", "THD" etc. I am going to provide a quick summary of the output power spec to help you better appreciate the importance of this specification and how it relates to the functioning of an audio amplifier.
A quantity of of the technical jargon which amplifier producers publish often are confusing and do not inevitably give a decent indication of the actual performance of the amp. Next I am going to describe the "power" spec of stereo amplifiers. This specification is one of the most essential and possibly important specifications to understand.
"Wattage" is sometimes also known as "Power" or "amplifier output power". To put it in a nutshell, "wattage" relates to how high the amp can drive your loudspeakers. The higher this figure the louder your loudspeakers. You wish to pick the audio amplifier wattage based on how big your listening environment is. Most amps will show rising music distortion as output power increases. Therefore, you want to pick an amp that offers bigger output power than you will in fact require. This is going to guarantee that you will never drive the amp into areas of big distortion.
Still, whilst the rms rating will tell you more about the amplifier's actual performance, be sure however that the amp offers a peak power spec that is substantially higher than the rms spec. This is because most likely you are going to be using the amp to amplify music or voice. Music and voice signals inherently always change by way of their power, i.e. the power envelope of the signal will change over time. Having sufficient headroom is necessary because music signals differ a lot from sine wave signals which are used to measure rms output power. Brief peaks of large power are repeatedly found in audio signals. These peaks will drive the amplifier into large distortion unless the peak power is big enough.
Please note that often the peak output power of the amp will depend on the impedance of your loudspeakers which is commonly between 4 and 8 Ohms. Due to the limited amplifier supply voltage, the largest output power is going to be half if you connect an 8-Ohm speaker of the peak power that the amplifier can output to a 4-Ohm speaker. Thus often largest output power is given for a particular speaker impedance.
A quantity of of the technical jargon which amplifier producers publish often are confusing and do not inevitably give a decent indication of the actual performance of the amp. Next I am going to describe the "power" spec of stereo amplifiers. This specification is one of the most essential and possibly important specifications to understand.
"Wattage" is sometimes also known as "Power" or "amplifier output power". To put it in a nutshell, "wattage" relates to how high the amp can drive your loudspeakers. The higher this figure the louder your loudspeakers. You wish to pick the audio amplifier wattage based on how big your listening environment is. Most amps will show rising music distortion as output power increases. Therefore, you want to pick an amp that offers bigger output power than you will in fact require. This is going to guarantee that you will never drive the amp into areas of big distortion.
Still, whilst the rms rating will tell you more about the amplifier's actual performance, be sure however that the amp offers a peak power spec that is substantially higher than the rms spec. This is because most likely you are going to be using the amp to amplify music or voice. Music and voice signals inherently always change by way of their power, i.e. the power envelope of the signal will change over time. Having sufficient headroom is necessary because music signals differ a lot from sine wave signals which are used to measure rms output power. Brief peaks of large power are repeatedly found in audio signals. These peaks will drive the amplifier into large distortion unless the peak power is big enough.
Please note that often the peak output power of the amp will depend on the impedance of your loudspeakers which is commonly between 4 and 8 Ohms. Due to the limited amplifier supply voltage, the largest output power is going to be half if you connect an 8-Ohm speaker of the peak power that the amplifier can output to a 4-Ohm speaker. Thus often largest output power is given for a particular speaker impedance.
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