atmasphere
Responses from atmasphere
| What is wrong with negative feedback? Acoustat6, yes, sometimes I do. Most music does not demand it but some does: The Verdi Requiem, on the Soria box set (RCA) is a good example of vinyl being put the limits, and stereos too. If you play the quiet spots at the correct volume, the pea... | |
| What is wrong with negative feedback? That is true. However I have found the if given the option, people prefer a system that it not bright and harsh, given otherwise that there is no lack of detail, bandwidth and with no tonal aberration.IOW, a proper stereo should lack loudness cues... | |
| What is wrong with negative feedback? That might actually be simpler- the proof in the pudding. Kirkus and I have had plenty of exchanges in the past and I have always respected his demeanor, but at the same time I do not think there is anything that I could say that would change his ... | |
| What is wrong with negative feedback? The source degeneration and drain load resistor are indeed identical mechanisms, and both occur in "real time", it must because the same current flows through both resistors! (see Kirchoff's laws) Yes, they do behave differently, but this is simpl... | |
| Class A/Triode-based preamps I'm curious. Is the volume control before or after the interstage transformer? Is the tube driving the transformer? | |
| To all tube lovers....... I dunno- maybe get rid of a speaker that is not that friendly?If you like tubes, don't buy a speaker that won't work with them. | |
| Class A/Triode-based preamps Triodes are the most linear form of amplification known. Class A operation is also the most linear. So it makes sense that a triode class A circuit will be better, but there are other considerations that affect the outcome! | |
| What is wrong with negative feedback? Kirkus, I do have a problem with this:And then there's the source degeneration resistor R4 . . . this is feedback exactly like R2, no? Why is it somehow more okay?Degeneration occurs in real time against the signal and so is not part of this argum... | |
| What is wrong with negative feedback? 'Current source' is what I call the Power Paradigm, as amps in that category try to make constant power, rather than constant voltage. Its the intention of the designer of the speaker that puts the speaker into the Power camp as opposed to the Vol... | |
| What is wrong with negative feedback? The math is fine right up the 2nd to last paragraph where an assumption is made that is incorrect. It matters a lot what the output section topology is. An excellent example is the difference between a triode gain stage and a cathode follower usin... | |
| Why not horns? Weseixas, it sure looks to me like Duke addressed the issues that you had with my last post. I just have one thing to add, and this is true of digital vs analog, tubes vs transistors, horns vs planars, pretty much you name it in audio:The better t... | |
| What is wrong with negative feedback? Rleff, that is mostly right; damping factor is the ratio of load impedance vs that of the amplifier driving it, and can be increased by adding negative feedback. Some amps achieve a high damping factor with zero feedback, the Ayre is an example of... | |
| What is wrong with negative feedback? Thanks Kirkus for your response. I tend to go with Norman Crowhurst rather than Baxandall. However I've been researching this issue myself for some years and while I regard ignorance of the past as foolhardy, I also try to keep an open mind. I wou... | |
| Amp for Coincident Super Eclipse FWIW a 'high current' amplifier will not benefit you with Coincidents in general, as they tend to have higher impedances, which favor tubes. I think the lowest impedance of any of the models is 8 ohms, and some are 14. So the 'high current' aspect... | |
| Why not horns? You leave out one critical part of your thesis, planers radiate sound from both sides , this ability helps to create the required space and time of a recording far more accurately than any monopole transducer.Horns will always sound like hi-fi, ne... |