atmasphere
Responses from atmasphere
| 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... | |
| Need Reel to Reel Tape Primer Sources Andy_p, heat is not the enemy, humidity is. 90s is fine for tape if the humidity is low- they will be less sticky. | |
| Why not horns? Eldartford, cheesy horns do have resonances, the way many other speaker technologies do. A good horn has less resonance than the your speakers do though. Don't misunderstand me here, I totally empathize with people that have trouble understanding ... | |
| What is wrong with negative feedback? Kirkus, I appreciate your input as always, and I am always interested in expanding my knowledge. I don't contest what you are saying, the problem is that it does not address my experience. I went to school too, FWIW.The issue I see is that if you ... | |
| Need Reel to Reel Tape Primer Sources What is important about tape performance is making sure that the tape head bias during record matches the tape you are using. To set this up usually requires a bit of test equipment.Modern tape absorbs moisture over time which causes them to shed ... | |
| Why not horns? Herman, just to be clear here: I don't know the actual impedance of the drivers in the Duo, but in a case where the minimum impedance is 8 ohms, I would expect most amplifiers will have the voltage response to handle that. Its when you go from 19 ... | |
| What is wrong with negative feedback? Kirkus, my technique for measuring propagation delay is simple: compare the input to output while using a squarewave source. Observe the difference in time between the rising input waveform and the rising output waveform. That's the delay time. I ... | |
| What is wrong with negative feedback? If you can increase the speed of the amp (decrease the propagation delay) theoretically you could speed it up to the point that the odd-ordered enhancement is pushed well outside of the audio band.Our amps are also pretty fast- 600V/usec is a typi... | |
| Why not horns? Unsound, Herman and I agree on something :)Herman, The reason the Trios and probably Duos have such an impedance curve has to do with the way the crossover works. Let's use the Duo as an example, but this is only an example, my experience with the... | |
| Why not horns? With regards to amplifier power and amplifier types used on horns: My speakers are horn hybrids, using a high efficiency pair of 15" woofers, which limit the efficiency to 98 db. If I push the system hard, I am really challenged to clip a 30-watt ... |