Spatial King,
I was describing the very basics of amplifer power supplies, paying particular attention to the rectifer output/resevoir cap.
I know that the power bandwidth of most amps easliy extends beyond 20 kHz.
Perhaps I did not articulate my thoughts precise enough, but I was not suggesting that an ampllifer's bandwidth is the same as the transformer.
I was purposely not getting into too much detail.
The question that Mr Tennis asked was how can ac-line cords affect frequency response. My simple answer is: I think that if there are ferrites or other inductive material involved in the construction of the cord, the inductance of this particular ac-cord may impede sudden fluctuations in current.
At the crest of the rectifed pulse, ie the charging pulse, the secondary of the transformer is now dumping current to the cap and the output device. It has to be this way or Kirchhoff's current law is full of hot air, which is not the case. The point I was trying to make is that during this brief moment the required current must ultimately come from the ac-line. If the ac-line is heavily inductive the instantaneous current performance may suffer.
I have never tested this theory on a real amp with different power cords. I have done circuit simulations in PSpice and i'm just throwing this out there as one way high frequencies or dynamics may be affected by PC's.
I was describing the very basics of amplifer power supplies, paying particular attention to the rectifer output/resevoir cap.
I know that the power bandwidth of most amps easliy extends beyond 20 kHz.
Perhaps I did not articulate my thoughts precise enough, but I was not suggesting that an ampllifer's bandwidth is the same as the transformer.
I was purposely not getting into too much detail.
The question that Mr Tennis asked was how can ac-line cords affect frequency response. My simple answer is: I think that if there are ferrites or other inductive material involved in the construction of the cord, the inductance of this particular ac-cord may impede sudden fluctuations in current.
At the crest of the rectifed pulse, ie the charging pulse, the secondary of the transformer is now dumping current to the cap and the output device. It has to be this way or Kirchhoff's current law is full of hot air, which is not the case. The point I was trying to make is that during this brief moment the required current must ultimately come from the ac-line. If the ac-line is heavily inductive the instantaneous current performance may suffer.
I have never tested this theory on a real amp with different power cords. I have done circuit simulations in PSpice and i'm just throwing this out there as one way high frequencies or dynamics may be affected by PC's.
