In Reply to: In lay terms, can someone explain how............. posted by mr grits on March 4, 2007 at 11:03:05:
Ideally we would like a wire with gain, a perfect voltage or current amplifier if you will. There are tradeoffs evident when one actually tries to accomplish this goal. The physics of this imperfect universe ensure there will never be a perfectly functioning gain stage, so the designer is forced to choose between what he percieves as the leser of evils in order to create useable product. It is all a matter of the design tradeoffs made along with what modern technology can offer us with the goal of reducing the tradeoffs to less than audible levels. If one cannot approach this pure wire with gain in all areas of response that are audible then one is left with a difference between what goes into an amp and what comes out of an amp which is other than gain. These nonideal deviations are presumably what is responsible for the various voicings of the different implementations.
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Follow Ups
- Transistor/tube amps are not linear, inject noise to the signal, have imperfect gain bandwidth's the list goes on.... - Ugly 09:39:40 03/06/07 (10)
- Are you implying better go passive as much as possible? (nt) - cheap-Jack 13:25:57 03/07/07 (9)
- Re: Are you implying better go passive as much as possible? (nt) - morricab 01:17:40 03/08/07 (4)
- Yes, less can deliver more. - cheap-Jack 09:18:53 03/08/07 (3)
- Re: Yes, less can deliver more. - morricab 15:33:58 03/08/07 (2)
- Good sound from FETs-driving-tubes powestage? - cheap-Jack 08:53:52 03/09/07 (1)
- Re: Good sound from FETs-driving-tubes powestage? - morricab 17:38:21 03/09/07 (0)
- Not necessarily, rather just that whatever the chosen (state of the art?) methods are imperfect.. - Ugly 16:32:14 03/07/07 (3)
- Yes, passive is a better way to go, IMO. - cheap-Jack 08:33:15 03/08/07 (2)
- Passive gain stages a better way than active????? maybe if a useful version of passive gain stage actually existed... - Ugly 18:17:58 03/08/07 (1)
- You jumped overboard, bud. - cheap-Jack 08:26:03 03/09/07 (0)