Bandwidth The bandwidth of an amplifier is the range of frequencies for which the amplifier gives "satisfactory performance". The definition of "satisfactory performance" may be different for different applications. However, a common and well-accepted metric is the half-power points (i.e. frequency where the power goes down by half its peak value) on the output vs. frequency curve. Therefore, bandwidth can be defined as the difference between the lower and upper half power points. This is therefore also known as the bandwidth. Bandwidths (otherwise called "frequency responses") for other response tolerances are sometimes quoted (, etc.) or "plus or minus 1dB" (roughly the sound level difference people usually can detect).
bandwidth the bandwidth of an amplifier is the range of frequencies for which the amplifier gives "satisfactory performance" the definition of "satisfactory performance" may be different for different applications however a common and well-accepted metric is the half-power points (ie frequency where the power goes down by half its peak value) on the output vs frequency curve therefore bandwidth can be defined as the difference between the lower and upper half power points this is therefore also known as the bandwidth bandwidths (otherwise called "frequency responses") for other response tolerances are sometimes quoted ( etc) or "plus or minus 1db" (roughly the sound level difference people usually can detect)