atmasphere

Responses from atmasphere

Tube takeover
FWIW, we had enough go-arounds in the past with New Sensor that we started sourcing our own tubes (right now none of our tubes are made in Russia). The writing was on the wall about this 2 years ago- if I were him I'd pull all the tooling and move... 
Choice of tube amp?
Bombaywalla, the first thing to do is drop the notion that tubes are voltage devices and transistors are current devices. While it is true that tubes run more voltage and less current, and transistors more current and less voltage, to think in bla... 
Tube Characterization: 6DJ8, 6922, 7308, CCa, etc
Mrtennis, you might reread the caveats I included earlier. However I might also point out that this experience is from working with literally thousands of tubes. I do agree that the tube type ought not be the criteria for selecting a component, al... 
Tube Characterization: 6DJ8, 6922, 7308, CCa, etc
Ah- OK. The 6SN7 will *generally* offer you smoother sound with less 'hash', especially at higher volume levels where airbourne vibration can affect the tubes. Detail will be the same and 6SN7s will generally allow you more drive ability as they w... 
Tube Characterization: 6DJ8, 6922, 7308, CCa, etc
Tvad and Neebee, there is no doubt that I support my design decisions !! :)-And the reason that I made those decisions is based on the experience that I had with the tube types I mentioned. The 6DJ8 was a popular intrumentation tube (look in an ol... 
Choice of tube amp?
If you are running ESLs it is the nature of the technology that you will have to run tubes for best results. ML has set up the speakers at a low impedance in an attempt to make them work with transistors, but it is only half successful as you stil... 
Tube Characterization: 6DJ8, 6922, 7308, CCa, etc
I agree with Albert too. Having said that, I will now proceed to step on some toes so please excuse me for a moment :) : 6DJ8/6922s are not a good tube for audio despite what you might hear here. The reason is they have a tendancy to microphonics ... 
Contrast/compare 50W tube amps
FWIW the M-60 is fine with speakers that are described as above. The amp is not quite *that* load sensitive (as many tend to think it is). Most speakers that have a dip to 4 ohms due to the crossover will work fine. The real issue is efficiency- i... 
Solar Electric/Battery Driven System?
If you are planning solar power, the advances in the area in the last 10 years have been profound. I wouldn't worry too much about the amplifier technology. If you are serious about solar power, the other items in your home (usually lighting, appl... 
Can tube preamps be as 'detailed' sounding as ss?
Sean, tubes *are* as fast as transistors, else vacuum-tube radio circuits could not exist. There are many things that limit bandwidth in tube *designs*, but tubes are not the culprit (check out the risetimes on our website sometime). Soft clipping... 
Can tube preamps be as 'detailed' sounding as ss?
IOW means 'in other words'.The 'citation' I've been referring to is the study by General Electric that was done back in the 1960s. In it, they found that people will tolerate quite a bit of even-ordered harmonics added (up to 40%), but were not to... 
Can tube preamps be as 'detailed' sounding as ss?
Zaikesman, I appreciate that you have a level headed attitude towards the sport. If you look back at my original post, you will find in the second paragraph the acronym 'IOW', which is to say that I was indeed commenting on the fact that many audi... 
Using Japan 100V Accuphase amp in US 120V. Safe?
DO NOT run this unit on 120V! If there is any unregulated circuitry it may experience overvoltage conditions that could damage capacitors and the like. If it is all regulated, the regulators may not be able to handle the load.A simple solution wou... 
Can tube preamps be as 'detailed' sounding as ss?
Zaikesman, I agree that topology has much to do with performance- that it is not just tubes/ss. There is a bit of a strawman going on in your post though, as I was commenting on the fact that audiophiles often interpret brightness as detail (altho... 
Can tube preamps be as 'detailed' sounding as ss?
The quick answer is 'yes'. The more complex answer is that transistor preamps might sound more detailed at first blush due to the presence of odd-ordered harmonic content (at low level) which serves as a loudness cue in the mids and highs. This ca...