atmasphere
Responses from atmasphere
| which turntable or how to convert to balanced phono setup? In gear that really does offer both a SE and a separate balanced input, the gain claimed by the manufacturer is usually quoted as being different for the two types of input, with the balanced circuit gain being higher. Why is that or is it a fal... | |
| Phono Stage - The great analog tragedy The Question is at what time was the industry in the know Stereo was not too far into the future, as this might of been a brakes on influence. @pindac Stereo reel to reel was available as early as 1954 using 'staggered head' format. | |
| Looking to Develop A Short List of Amplifier Candidates For A Pair Of JBL 4367 Speakers We can see that Chatbot gets things wrong. It listed our Class D, which employs a lot of feedback (about 37dB) so is not a 'zero feedback' design. @neonknight I run a similar speaker (Classic Audio Loudspeaker T3.3) which also uses 15" woofe... | |
| Impedance Loading for SS Hyperion Whilst I agree with your statement, both the Decca and Soundsmith are MI, not MC. Therefore loading changes affect the frequency response ( and phase ) to a far larger degree than a LOMC, and as far as I know the frequency changes with MI from b... | |
| Impedance Loading for SS Hyperion I keep swapping to the London Reference I am comparing the Hyperion to, and it seems the higher the impedance loading, the closer they sound. I am not experiencing the "peaked high end" I was warned of if loading is increased over 1000Ω. @dogbe... | |
| Phono Stage - The great analog tragedy No serious effort was made to make top quality phonostages to match the remaining analog innovations. @pani I don't agree with your opening post or this one above. We designed our phono section in 1988 and it was a year before our line section... | |
| which turntable or how to convert to balanced phono setup? More likely the RCAs ground the negative phase of a balanced signal inside the chassis and convert to SE operation. That’s what Atma-sphere does with their amplifiers, so those who have SE components upstream can stay SE in the amplifier. @lewm... | |
| Quality answer to dangers of Tube amps running under no load If you have the speaker unplugged, the load is now nearly infinite ohms. That gets multiplied by the transformer to an even higher number of ohms (hundreds of thousands or even millions) that the tubes are trying to work against. The result of th... | |
| ??? WHY WHY WHY ??? Class A vs Everything Else Ralph, I hate to disagree, but a pure Class B amp (like the Quad 405), switches from the upper set of transistors to the lower set with no region where both are operating. @lynn_olson I hope you understand that I am familiar with classes of ope... | |
| 300b lovers The measured frequency response of this transformer (with 6f6) in my amplifier is 6Hz to 90KHz -3dB. @alexberger while that looks excellent, I suspect these measurements at the link are not at full power. If you want the amp to perform, full po... | |
| ??? WHY WHY WHY ??? Class A vs Everything Else (AB) Significantly higher efficiency, greater power output (typically 3X or more) and an implied requirement for local or global feedback to linearize the switching transition in the output devices. @lynn_olson I think most people haven't thoug... | |
| 300b lovers @alexberger If I were you I'd be concerned about the current for a driver tube that must pass through the core of the interstage transformer. That current is DC and causes the core to be magnetized. That in turn leads to saturation which increas... | |
| ??? WHY WHY WHY ??? Class A vs Everything Else You can thank the designer, not the class of amplifier. This. As long as the amp has a decent distortion signature it will sound pleasing regardless of the class of operation. There are now class D amps that rival the best class A tube and s... | |
| Has anyone switched from Class AB/A to Class D? Was it better? Was it worse? in my 40y + sound works I haven’t seen such speaker, with purely resistive load (2/4/6/8/12/16)! In order to design output filter properly, we need to take complex model of loading, including variety of speaker cables, DC protection relay ckt, spe... | |
| New preamplifier - Backert Rhumba Extreme, Aesthetix Calypso Signature, Ayre KX5 Twenty if I recall correctly if you make any volume adjustments while watching a “movie” the entire system does not stay “in sync”. @dotto81 IIRC the volume of the home theater processor is controlled by a remote. It feeds that signal to the preamp. If... |