atmasphere
Responses from atmasphere
| 300b lovers But many of these classic PP still sound fine! Why? Because feedback or because PP has PS noise cancelation? Feedback allows the amplifier rejection of that which is not the signal, so generally speaking, yes. I really liked the 3 6sn7 tube... | |
| Dynaco ST-70 vs Mark 3 The ST-70 has long been considered the better sounding amp. The important thing is to make sure its power supplies (including the bias supply and its rectifier) are operating properly. The often need resistors on the circuit board replaced too. N... | |
| 300b lovers The Dynaco, introduced in the mid-Fifties, took the drastic step of deleting the driver stage and its associated RC coupling, and driving the output tubes from the RC-coupled phase inverter. Although the open-loop performance was quite poor, roll... | |
| Which frequency to adjust if voices/mids give me a headache. I've done Dirac room correction and both sets of speakers still bother me a bit. These are not bright speakers I know. @wrecked Since you've done room correction the cause of the irritation may not be brightness. Higher ordered harmonics cau... | |
| Class D amplifiers. What's the future look like? Given the filters and phase shift, does class d design lend itself to mathematical modeling? Yes. Like anything else though it depends on the quality of your models. | |
| Atma-Sphere Class D… Amazing I was watching a YouTube video from REL about connecting their subs to class D monoblocks. They recommend connecting their red wire to the amp’s positive speaker post and the black wire to chassis...not the negative speaker post. I’d prefer to he... | |
| 300b lovers A current source could replace the resistor, but in practice, the performance is very similar to a current source, so it’s rarely done even in modern amps. Usually in a differential amplifier, the plate resistors are matched if both halves are ... | |
| 300b lovers @charles1dad My point was addressing a comment made earlier by Lynn about overshoot in amps employing feedback; simply that if you do it right its not a problem. The OP mentioned using Spatial Audio Triode Masters who were a dealer of ours and hav... | |
| 300b lovers I changed the load resistor to 120KOhm, and the overshoot decreased by amplitude and attenuation time. But still, there is a notable overshoot. I measured a frequency response and there is a hump +1.7dB at 35KHz. There is -3db at 19Hz and 47KHz. ... | |
| Class D amplifiers. What's the future look like? As well as other new applications of technology such as Westminster Labs sliding bias voltage Class A cool running higher power solid state amps? They may well function superior to Class D amps. The issue has been for the last 70 years and ... | |
| Speakers 10 years old or older that can compete with todays best, I digitize my turntable and use digital RIAA correction which is more accurate than any analog circuit. I am curious about this. The RIAA pre-emphasis is of course done with analog components; as a result is not the ideal but instead a modified... | |
| XLR cables for a reasonable price? Yes, we can agree that it seems that's your only point. I'm not sure that I agree with the premise that the cables in my mostly-ARC system represent a "veil" on the sound +1 Some have called me a 'cable denier' on this account. The easy way to... | |
| Class D amplifiers. What's the future look like? A crappy or over hyped review shouldn’t change anyone’s desire to audition or dump a component. A true test of a component is how it sounds (gels) within your system and to your ears. @lalitk You got that right. If the manufacturer’s, distribu... | |
| XLR cables for a reasonable price? You understand that AES48 is just one "standard," correct? There are other ways to design balanced components and choosing an alternative doesn't mean the standard you so cherish is "ignored." @cleeds You are correct to a point. There are other... | |
| XLR cables for a reasonable price? As if there were no other good amps or engineering approaches. There are, and many. I believe that manufacturers and dealers should be honorably dismissed. It doesn’t matter how much knowledge and skill they might have, this is not a proper place... |