atmasphere
Responses from atmasphere
| Causes of long term listening fatigue? LF is caused by odd-ordered harmonic content in the signal, usually harmonics of the 9th order and beyond. These harmonics are emphasized by the use of negative feedback in amplifiers and by non-linearities in transistors (and to a lesser degree b... | |
| Are Horn Speakers good or bad or simply a complete joke? Just FWIW... to get horns and other high efficiency speakers to sound right usually involves an amplifier with a relatively high impedance output. Nelson Pass published an excellent article that raised this issue in Audio Express around the beginn... | |
| High impedance Speakers Classic Audio Reproductions makes two 16 ohm speakers, the T5 and the T1, which are both moderately high efficiency too (95 and 97db respectively). | |
| Progressive Rock You can't talk about Prog these days without mentioning Porcupine Tree. Most of their stuff is on LP too.My system, while not designed to play rock at all, is fine with it (and I tend to be brutal about it...) and I am one of those at the shows th... | |
| Attention Minneapolis Audiophiles Hi Art,I'm game! | |
| Subtlety ? do any American amps do it? Yes. Is this a trick question?? | |
| Our we Lazy? Ease of use vs performance has been with humans for a long time. Its still not a good excuse though. If the goal of this hobby is to get as close to the recorded sound as possible, then ease of use issues have to be tolerated in that quest, to som... | |
| why does preamp improve sound quality? OK- Here's how the preamp line stage should function. The problem is that the interconnect cable has electrical parameters, capacitance for the most part, that interacts with the signal. The higher the impedance, particularly of the source, the gr... | |
| why does preamp improve sound quality? One thing that no-one seems to be mentioning is that the line section of a preamp also has to control the interconnect cable. The better they do this is often also part of the measure of quality a preamp can portray. Passive controls do not contro... | |
| tube amplifier auto bias- accurate? Hi Eldartford, actually semiconductors are nice for self bias as they allow for a higher operating voltage. Since the bias voltage for the power tubes is usually developed across a cathode resistor, that means that the B+ available was the power s... | |
| tube amplifier auto bias- accurate? My 2 cents: There's a bit of confusion here about autobias and self bias. Self Bias has been around for decades and has been used by many manufacturers over the years.Autobias is a modern varient of Fixed bias. Fixed bias is the correct way of say... | |
| Amps with high voltage? Electrostatic speakers are not driven well by an amplifier that makes constant voltage with respect to load (i.e. most transistor amplifiers). This is because the impedance variation in ESLs is not due to the resonance of the speaker (where the co... | |
| the 4 ohm rating Did he try a tube clock radio? They do sound better you know. After you change the filter caps and the coupling caps. Custom wire and resistors are nice too. | |
| Yes remasters/ HDCD Some of the early posts to this thread mention Close to the Edge; for those of you still playing LPs, the trick is to somehow find the original British press, K50012 on Atlantic. The label has the green and red colors similar to the American press... | |
| the 4 ohm rating Sorry for the long response:Many speaker designers feel that speakers are 'voltage driven' and thus design speakers around that idea. This allows for a speaker to have dual woofers (in parallel for 4 ohms) and thus the amp will produce twice as mu... |