atmasphere
Responses from atmasphere
| balanced/xlr vs. unbalanced/ single ended If you really want to take advantage of balanced line operation, consider shortening you speaker cables (as short as you can make them) and then run long balanced interconnects.If your setup in fact properly supports balanced line operation, the l... | |
| More power or better quality power? There is a common myth that because the sound emerges from the speakers, that the speakers are the most important. If the speaker is really that good it will reveal everything upstream from it too. The fact of the matter is everything is important... | |
| More power or better quality power? Quality is everything. The ability to reproduce low level detail does not come from brute strength, although its great if you get both at the same time.That 'first watt' concept BTW is important- music is quite dynamic and most of the time your po... | |
| How do tube Watts compare to SS Watts? The reason you hear a lot about tube watts being more effective somehow is due to distortion- tubes make less of the distortions that the human ear finds objectionable- and so *seem* to have a greater percentage of usable power relative to transis... | |
| Break in period Shadorne, are you saying IOW that you hear changes but you attribute them to yourself rather than the gear? | |
| Best Balanced Tube Preamplifier FWIW we've built only balanced tube preamps. As far as we can tell, we are the first manufacturer to make fully differential and balanced all-tube preamps (1989). One of the founders of BAT bought one of the first production MP-1s before BAT was c... | |
| Balanced in phono stages preamp? Hi Herman, not if the voltages are kept the same. That's what the adjustment is for (in this demonstration case).In our production preamps, the grid resistors are tied to ground and for the sake of simplicity, double as the input loading (however ... | |
| Break in period After reading this thread I am surprised that there are still those out there that adhere to the idea that break-in does not exist. Some years back we looked into the phenomena to try to figure out what was going on. As a manufacturer I can tell y... | |
| Balanced in phono stages preamp? Hi Herman, the input of the preamp is differential so the cathodes are tied together. The cathodes are also tied to a 2 stage vacuum tube constant current source whose cathode is tied to a resistor that is tied to B- (-250V).So my bias references ... | |
| Balanced in phono stages preamp? Hi Herman, the point is that to operate balanced differential you *don't* need a common reference point. I don't know how that idea got started but it is mythological insofar as differential amplifiers are concerned.As I have mentioned before, to ... | |
| Balanced in phono stages preamp? Hi jh, if I provide two independent floating bias supplies for the input of the preamp, I don't have to have the grid resistors go to a common point. This way the cartridge does not have a 'center tap'. Yet it still works exactly the same way- no ... | |
| Can tube amps give true high end bass? There are several problems that most transistor designs face in order to play bass.The first is, perhaps a bit counter-intuitively, that they are direct-coupled. Direct coupled amplifiers have response to DC, but when you think about it, the power... | |
| Balanced in phono stages preamp? Hi jh, It sounds like we're not talking about the thing. How about if I create a bias voltage for the input section that is set at something other than ground? I could set it a -1 volt for example. You really want to eat those resistors?? | |
| Best amps for rock and heavy metal I play a fair amount of metal and have a lot of friends who play in metal bands too. But my system is all tube. My speakers are fairly efficient (97 db) and they go to 20 Hz, so with 60 watts I can play any volume I want and shake the house at the... | |
| Balanced in phono stages preamp? So in this particular case, the differential circuit *does* care about ground.Well, no it doesn't. In our preamp we have two resistors because we have to have a 47K input impedance and because the tubes require a grid leak resistance- for biasing.... |