atmasphere
Responses from atmasphere
| balanced preamp Kijanki, you are correct about the distortion product. However the less distortion is made the better. If you do the design right, the primary harmonic to show up will be the 3rd. If you don't, you'll have a mess on your hands :)I don't find in pr... | |
| Preamps with balanced ins/outs and remote Seadogs1, if the preamp is internally balanced, you should be able to get an output from the preamp by driving pin 2 and pin 1, and also by driving *pin 3* and pin 1 (pin 1 being ground). If it is unresponsive on one of those inputs, say pin 3 for... | |
| Triode mode vs pento mode Hi Trelja, seems to me Dynaco was one of the companies that got around the patent by moving the tap.Dover, The problem with going to triode mode on an amplifier like the Dyna MkIII is that the load impedance has to be set up differently- essential... | |
| balanced preamp Going internally balanced is a good way to reduce distortion of the circuit. This is true whether the preamp is tube or solid state. If the balanced operation is done properly, the interconnect cables cease to be a part of the sound of the system,... | |
| Non-feedback amplification topology and frequency Mapman, I'm pretty sure that part of the reason this is so has to do with that article I link all the time:http://www.atma-sphere.com/Resources/Paradigms_in_Amplifier_Design.phpIf you happen to compare the two amps on a speaker that is in one camp... | |
| Negative feedback Amp=more faithful reproduction? Correct! IMO the damping thing is way over-blown.I found that article:http://paulspeltz.com/tomcik/index.html | |
| Triode mode vs pento mode Al, I wonder if you might be aware of the patent that was originally issued on the ultralinear technique?To get around it, a good number of companies simply moved the tap. However, the original patent shows that if the tap is correctly placed, you... | |
| Non-feedback amplification topology and frequency It really is that black and white. Sort of like being pregnant. What is poorly understood is our ears are so sensitive to odd orders that we can hear things that cannot be measured. So it might look 'OK' on paper and our ears say something else.An... | |
| Negative feedback Amp=more faithful reproduction? There seem to be several things not yet discussed on this thread that seem IMO to be important.The first is that the ear interprets harmonic distortion as tonality. For example, the 2nd harmonic of some tube amps is why they sound 'warm' or 'lush'... | |
| Non-feedback amplification topology and frequency Mapman, they do, but even in high end audio we have to deal with facts occasionally :)The reason I made that comment is that an amplifier that violates one of the most fundamental rules of human hearing will never sound like real music. Its not so... | |
| Does the volume control effect sound quality? Agreed! :) | |
| Non-feedback amplification topology and frequency Onhwy61, No. Its simply the way it is. One example (if you read the article) is using transistors on ESLs. Its difficult for them to play bass, and often too bright. Mapman, Correct- never is a long time. The problem is, we are not likely to chang... | |
| Triode mode vs pento mode Triodes are some of the most linear amplification known to man. Pentodes are not and generally need negative feedback correct to be useful for audio.Good bass has nothing to do with the amp being triode of pentode; good bass results from having th... | |
| Preamps with balanced ins/outs and remote In regard to the different sound of cables I think much of this has to do with their construction and material. With regard to balanced operation, the statement is mostly false. However it is widely believed by many in high end audio. "Mostly" as ... | |
| The Audio Research Reference 10 is here $30k Bifwynne, now that you mention it, that was a policy that has been there for years. But who knows, it could have changed but how I understand it is that the new owners have not messed with the company. |