atmasphere
Responses from atmasphere
| Tri-Planar grounding question... Jeff, I think you got it right. The reason it is not a ground loop is that the only place the ground occurs is the shield of the cable. Without that connection to the arm, the arm would be floating and it would buzz like crazy!This concept is comm... | |
| Designer Hall of Fame Beerdraft, it might interest you that Victor's partner was a customer of ours and had bought 2 sets of our amps and a preamp. I spent a few hours on the phone with Victor while he had one of the amps open on his bench, trying to model it in P-Spic... | |
| Tri-Planar grounding question... The shield does not go through the gimbled bearings. Inside the arm tube, the tube itself is the shield. So the arm ground is usually picked up somewhere near the base, probably very near where the wires transverse the gimbles. | |
| Obscure companies making excellent speakers? Mehrakrishan, no field coil speaker is going to be inexpensive. The reason the permanent magnet speakers showed up decades ago is that they are cheaper to make!The High Emotion Audio speaker is easy to drive but it is not considered high efficienc... | |
| What is meant by a "fast" pre amp 'good phase purity' comes from wide bandwidth/high slew rate.In order to get to 20KHz without phase shift, the upper cutoff of the circuit needs to be 10X higher, IOW 200KHz. YOu can use that as a good rule of thumb for seeing a 'fast' preamp in i... | |
| Tri-Planar grounding question... The two should be the same. | |
| current versus watts Sound quality has little to do with current (otherwise the tube industry would have died decades ago) and has everything to do with distortion. That is a topic for a different thread.'Current' is an issue about which there is a lot of mythology. s... | |
| Tube Testing: Is Measuring Plate Current Important The Hickoks are good testers. Usually you don't need plate current to test the tube, but you should understand that tube testers like the Hickoks, which are called transconductance testers are in fact an approximation. But they are usually much mo... | |
| sweep tubes and audio application? The 6LF6 was used by Futterman in some of his OTLs. They have high-current low-voltage capability. They have become rather expensive as they are no longer made.These days the EL509 is the tube that replaces the 6LF6 although not directly. It is a ... | |
| Are linear tracking arms better than pivoted arms? The idea that a pivoted arm of correct effective mass is going to induce greater side-to-side excursion than an air-bearing straight-tracking arm strains credulity. | |
| help me remove noise from my vinyl setup Scar, the Sonata has an impedance much lower than that.The Jensen JT-44K-DX will likely do the job quite well. seehttp://www.jensen-transformers.com/mc.html | |
| The Richard Clark "all amps sounds the same" test Yes, 'under a given set of conditions' for example if you are dead, its hard to tell two amps apart. Is he a zombie? | |
| Atma-sphere 3.0 to 3.1 Elberoth2, I've been listening to the Sashas with MA-1s a lot recently. They seem to work quite well together and is what I based my comments on the Sashas on over on the Speakers forum.If you run the amps with less than the full complement, due t... | |
| Tube Fireworks Tubes have a cathode that emits elections. It is heated so it will emit electrons more efficiently, and finally it is also treated with a sort of paint that improves its efficiency even more. It is this coating where you have most of the arcing pr... | |
| Are linear tracking arms better than pivoted arms? Mepearson, not to muddy the waters too much but I spotted a comment from Dertonarm that needs correction: the bearings in the Triplanar as good as you can find. They are custom-built by an aerospace bearing supplier, and are 3 or 4 grades higher i... |