atmasphere
Responses from atmasphere
| Loudspeakers with a wide sweet spot Although I am a big fan of horns and field coils, the speaker with the widest sweet spot that I have seen/heard so far is made by High Emotion Audio. The tweeter is unique and patented. It goes down to 2KHz- well within the range of image definiti... | |
| Atma-Sphere S-30 MK3 Update..... Pubul57, these days we've been using the Chinese 6AS7s. Its been a lot less politics than using the Russian tubes. | |
| DIY balanced interconnects Hi Kirkus, actually the input impedance of our amps is 100K single-ended, 200K balanced. On the bigger amps there is an input termination switch that allows for 600 ohms between pin 2 and 3 of the XLR. Although I am a fan of the standard, common s... | |
| DIY balanced interconnects Well, Kirkus, the issue is actually quite simple. What are the rules of human hearing? Once understood, then we simply apply physics to create the means that will obey those rules as close as possible.The most important rule is how we perceive lou... | |
| Best speakers for tube amp looking for suggestions Audiokinesis also offers high performance for tube amplifiers at reasonable prices. It helps to find out what the designer was using when he designed the speaker- Coincidents were designed on tubes and so are very tube friendly also. | |
| DIY balanced interconnects Kirkus, if you are referring to characteristic impedance, we in fact examined that issue about 20 years ago. The fact of the matter is that if you can determine the actual characteristic impedance of the cable and then terminate it correctly, the ... | |
| DIY balanced interconnects To sort of sum up what I have been trying to say here. if you want to have the cables not be a part of the overall system sound, the old 600 ohm standard is the way to do it. The audio world in general has seen a shift from what I call the Power P... | |
| Does impedance matter? Magfan, impedance actually is pretty important. I've read the whole thread here and not seen any of the important issues addressed- here they are.1) The lower the impedance, the more power you will get from a transistor amp, within the limits of t... | |
| DIY balanced interconnects Right, Kirkus, my Neumanns are U67s. After doing some measurements with them, we found that the transformer was more linear when driving a lower impedance- even 600 ohms was too high. The 600 ohm standard arose from the characteristic impedance th... | |
| DIY balanced interconnects Tvad, what you are missing is the output impedance is not the spec. For example, the Modright might have a 100 ohm output impedance- if the output winding is designed to drive 600 ohms then it would work fine. Ditto Roland and Wadia. The output im... | |
| Cogent horns Macrojack, right now field coil drivers are custom affairs or at the least, pretty pricy. I know Classic Audio Loudspeakers modifies a certain JBL compression driver- seems to me by the time they are done there is very little left of the original ... | |
| DIY balanced interconnects Oldears, I don't think I've seen any cable wherein the barrel of the XLR was tied to anything. I would ignore that connection. The only ground you need to be concerned about is pin 1, which is always the shield at **both** ends of the cable.Tvad, ... | |
| DIY balanced interconnects Tvad, you got that right. I've not watched the solid state part of the market, but I know that Roland did support the 600 ohm standard. Generally its fairly easy for semiconductors. Wadia supported it in the old days- I've not kept up with them th... | |
| DIY balanced interconnects Oldears, connect the shield at both ends, which will always be pin 1. Any other connection (or lack of connection) is not standard and could cause troubles. The way it is supposed to work is that there will be no signal current in the ground- all ... | |
| Cogent horns Field coil speakers have always been more expensive to make. When permanent magnet speakers became available, the industry moved to them quite quickly due to the fact that they were cheaper. Like a lot of things in audio (tubes to transistors, LP ... |