Today I read something tht contradicts with something tht was taught to me decades ago.
I am not trying to prove anyone or any theory wrong.
What I want is to clear this misunderstanding, whether it is me or any other.
This topic is purely based on Audio and Audio only. Any other source is out of the question and outside this topic mostly.
From what I have learned Audio circuit deals with something known as Impedance. Impedance reflects to AC signals and Audio consists of purely AC signals, so any circuit built to manipulate it has some resistance to it, whether it is an input or an output.
Mainly Impedance is concerned in Amplifiers. It does not matter a balanced XLR preamp or High Power amp driving 8Ω Transducers.
An amp can have a high input impedence in order of KΩ and an output impedance which is much much lower.
Today one member of AAC wrote that impedance matching is never done in Audio amps.
My question is why?
Taking a commercial amp, say for eg: a 100W amp.
It specs says, Input level is 700mV, has input impedance of 47KΩ.
Delivers 100W to 8Ω at distortion level of 0.04%.
If Impedence matching is not a concern, can anyone explain how a 100W, 16Ω speaker that is driven by the above amp at it's full capacity will deliver 100W of power.
And if the input is connected to a source of 700mV at 20KΩ could deliver 100W to a 8Ω speaker.
I know I have proven that impedance shud be matched when taught electronics decades ago. Now I am a bit rusty at the theory part but I know I can prove that impedance shud be matched for maximum power transfer, whether it is to an input or to a speaker
I will need to go back to the books and dig up my tutorials to show it here.
This might take time.
In the meantime I would like to know what every respectable member here knows about this theorem
Thank you
I am not trying to prove anyone or any theory wrong.
What I want is to clear this misunderstanding, whether it is me or any other.
This topic is purely based on Audio and Audio only. Any other source is out of the question and outside this topic mostly.
From what I have learned Audio circuit deals with something known as Impedance. Impedance reflects to AC signals and Audio consists of purely AC signals, so any circuit built to manipulate it has some resistance to it, whether it is an input or an output.
Mainly Impedance is concerned in Amplifiers. It does not matter a balanced XLR preamp or High Power amp driving 8Ω Transducers.
An amp can have a high input impedence in order of KΩ and an output impedance which is much much lower.
Today one member of AAC wrote that impedance matching is never done in Audio amps.
My question is why?
Taking a commercial amp, say for eg: a 100W amp.
It specs says, Input level is 700mV, has input impedance of 47KΩ.
Delivers 100W to 8Ω at distortion level of 0.04%.
If Impedence matching is not a concern, can anyone explain how a 100W, 16Ω speaker that is driven by the above amp at it's full capacity will deliver 100W of power.
And if the input is connected to a source of 700mV at 20KΩ could deliver 100W to a 8Ω speaker.
I know I have proven that impedance shud be matched when taught electronics decades ago. Now I am a bit rusty at the theory part but I know I can prove that impedance shud be matched for maximum power transfer, whether it is to an input or to a speaker
I will need to go back to the books and dig up my tutorials to show it here.
This might take time.
In the meantime I would like to know what every respectable member here knows about this theorem
Thank you