kirkus
Responses from kirkus
| The best of Goodwill... Dynaco ST70, PAS2, and FM3 as a set ... All for $35. All in the pre-Internet days though .... | |
| Who has a system with JBL 375 mid range drivers? The 375 is featured prominently in one of my virtual systems, it is indeed a wonderful driver. There's also the professional model 2440, which IIRC is identical to the later 375, but is available at more reasonable prices. You might also look arou... | |
| Active speakers with 15" woofers, need a list BeoLab 5 ... | |
| Why do old tubes sound better than current tubes? Hi Al, it of course depends on how the tube is being used in the circuit. If the two sections are cascaded single-ended transconducance amplifiers, or a triode driving a split-load phase inverter, then I'd say the matching matters not at all, so l... | |
| What is wrong with negative feedback? Ah, Atmasphere, thanks for your response . . . I think we're getting somewhere here. Let's start with:Degeneration occurs in real time against the signal and so is not part of this argument. It is different from loop feedback in that regard and th... | |
| What is wrong with negative feedback? I would like to direct you to an article written by Nelson Pass that is on his website, the one about distortion. I think you will see right away what the issue is, he, like myself, tends to work with empirical measurement rather than simulation. ... | |
| What is wrong with negative feedback? The issue I see is that if you have a wideband amplifier, and I do, the problem is that the squarewave response looks nothing like you described: it has a lot more in common with the input. It might be kind of strange to think about a tube amp tha... | |
| What is wrong with negative feedback? It has been known since the mid-1950s that loop feedback enhances odd ordered harmonics and there were cautions expressed that long ago about excess use of Global negative feedback due to this problem . . . How do you square that reality against w... | |
| What is wrong with negative feedback? The model you are proposing relies on propagation time being mutable, which it certainly is not.Atmasphere, forgive me if I'm being a snot . . . but I think you need to brush up on some basic electrical theory. Pole/zero networks do indeed have di... | |
| What is wrong with negative feedback? Distortion has the property of masking detail in addition to adding loudness cues, so if you can get rid of distortion you get greater transparency and greater smoothness at the same time, provided your techniques for getting rid of distortion don... | |
| What is wrong with negative feedback? The typical transit time of linear amplifiers is about 2000-3000 nanoseconds, which is too slow for effective implementation of global feedback and error correction.I think this description nicely highlights so many of the conceptual and terminolo... | |
| What is wrong with negative feedback? The main "problem" is that that it's widely misunderstood by both those circuit designers that use it, and those that eschew it. It's also very much out of vogue these days. What negative feedback is, in essence, is the technique of trading circui... | |
| iTunes Windows/Mac interoperability issue Whew John . . . I think you're stumbling onto a good handful of issues that can make file-based music organization really frustrating. My knowledge on the subject is pretty limited, so I'm just sharing some musings here . . . First, on filenames -... | |
| Turntable speed slow with quartz lock If it's like i.e. the Micro DD decks, the built-in strobe is sync'd to the mains frequency, whereas the internal oscillator is not. So if it's by a very small amount, and you're using a mains-frequency strobe . . . It could be the mains that's eve... | |
| Turntable speed slow with quartz lock Two questions - what strobe are you using for reference, and how slow are they running? |