jonnie22

Responses from jonnie22

Noise reduction -why the rage now ?
So the signal magically appears at the speaker terminals, passing right over our electronics. That means delta-sigma DACs don’t affect the signal (sound different than R2Rs) etc. Thanks for the laugh. 
Noise reduction -why the rage now ?
Geoff -I thought the wave carried the signal. Then, as far as RF damage -does it delay or ’erase’ the wave (or signal) ? Some links/studies would help.And thanks snapsc, love those measurements. Esp how modern SS amps still heat up !! 
Noise reduction -why the rage now ?
Well, your 10 paragraph response probably threw me off. All I’m saying is we cannot hear RF (directly), as it shoots through the air, in audio circuits. BUT I admit, it’s still a problem as it gets conducted by all that metal (in a component). Hen... 
Noise reduction -why the rage now ?
You were hearing something else. The science says we cannot hear RF directly. But as I described above, it could be getting into the circuits and getting amplified. 
Noise reduction -why the rage now ?
Microphony is different issue. RF can be "overcome" IF you use a very-advanced technique like the Nordost QPoint (just demo’ed at RMAF ’19). But it’s still best to SHIELD parts from RF, rather than "overpower" it in the air... 
Noise reduction -why the rage now ?
Thanks for sharing this. I believe power cords should be shielded. Co. that make (expensive) after-market ones say this. No power supply is quiet, unless you can prove the rectifier & regulator produce zero noise. Most rectifiers were putting ... 
Noise reduction -why the rage now ?
RF is not very high-frequency -megahertz and gigahertz ranges are. And that’s where consumer-stuff is going, to a much quieter region of energy.Then, there’s no evidence to support the "worsening effects" of RF (as the link explained). True, if yo... 
Noise reduction -why the rage now ?
You didn’t read the whole article. "The bottom line is no-one really knows whether outdoor noise has increased or decreased in recent years. And the same goes for measurements made indoors."Later says "the needed data is almost totally missing".Ye... 
Noise reduction -why the rage now ?
Here is something very interesting. We DON'T KNOW if noise is worse in recent decades, at least with RF.I can’t seem to add the URL, so type:"electronic noise is drowning out the internet of things ieee.org" 
Noise reduction -why the rage now ?
Would LOVE to know what percent of noise is coming from::Our playback gearDC motors, dimmers, WiFi in our houseThe grid - neighborhood noise, radio stations, etc.THEN to know how much total noise (in db) there is... 
Noise reduction -why the rage now ?
I don’t think SMPS are noisy, today. In the past, we had poorly-designed ones (in high-end audio) and I’m sure of that. Most co. still use LPS, at least with line-level components. They use cutting-edge regulators (like Hynes) and are a success.So... 
what is it in audio that you dislike most?
High price, low science. Always a problem, though it seems to be slowing down. More science, lower prices -R2R DACs, signal wire, waveguide/horn speakers, subwoofers, etc.Reviewers that do it wrong. Use a speaker with (1) amp, a room too small for... 
What’s really hurting the audio hobby?
Glennewdick: what are the (6) brands that you see worldwide ? I’m shocked, as there are hundreds available.Geoffkait: AA still swings-in w/ 30,000+ hits and other places like AudioShark are growing every year.Based on the comments here, audio is n... 
The term "High End" needs to die. Long live Hi-Fidelity!
I'm clearly referring to playback... 
The term "High End" needs to die. Long live Hi-Fidelity!
The term also associates with the 70s. Panel speakers and (the slow) return of tubes. In short, backwards technology. Yes, solid-state had problems. But if more people tried to figure it out (like Quad and Pass), instead of going the easy-path of ...