kijanki
Responses from kijanki
| Class D Technology Nonsense. Not only that I don't know what they mean by "Pumping back the energy" in half bridge configuration (that I use all the time) but at least they don't mention limited resolution. Such statements: However, the differential output structu... | |
| Cheater plug safety erik_squires, +1, It is important distinction - chassis ground is different from the signal ground (in IBM computers system and chassis grounds is the same causing all sorts of problems). It was mentioned here that IC might not provide adequate g... | |
| Class D Technology Sorry, Randy-11 but this article is garbage. The critical fact to bear in mind is that all Class D amplifiers have outputs that are comprised of discrete power increments, a notion that can more easily be thought of as resolution steps.Class D amp... | |
| Class D Technology Mapman +1. People are tossing terms like "nonlinear" or "lots of distortion" without even understanding the principle of operation. I can understand when people don't like sound of particular class D amp with their speakers, but tossing pseudo-t... | |
| Cheater plug safety Lifting ground in amp designed to operate with ground plug (Class 1) is always a safety risk. There might be amps, like Parasound design to operate with or without ground, but when it isn't don't cheat. Amp without ground plug is designed differ... | |
| Class D Technology Ralph, Karsten Nielsen doctorate work at Technical University of Denmark is available on line. Here is volume 1:http://www.icepower.dk/files/ph.d.thesis/Volume_I_Title_and_preface.pdfSorry to hear about your injury. My daughter has sciatic nerve... | |
| Class D Technology Again, switching noise is inaudible, unless anybody can hear 500kHz. Even bats won't hear it. I'm not sure why is it so difficult to understand. I addition tweeter's membrane won't move at all. Personally, I have problem hearing 20kHz. As for... | |
| Class D Technology Mapman, high frequencies are different for sure, but not for the worse. Cymbals, for instance, sound more "brassy" and less "splashy". To me it sounds more natural, but it might create false impression of limited extension. | |
| Class D Technology George , I did put my ear to the tweeter and I can hear almost complete silence - much better than class AB amp I had before. I'm not surprised since tweeter membrane has no chance to move at 500kHz.Modern SMPS are much quieter than linear power ... | |
| Class D Technology George, I looked at the link you provided. Yes they use filters for the purpose of measurements to eliminate residue of switching frequency that is otherwise completely benign. This small residue (about 1%) has no effect on the sound. Speaker me... | |
| Class D Technology Non-linear & lots of distortion that needs to be cleaned up with an output filter. I don't understand what you mean by that. Class D is extremely linear. Class D modulator, converting voltage to duty cycle, resembles Delta-Sigma D/A conve... | |
| Amplifier heat...help! 130deg F is 30deg C increase above ambient temperature. Life of electrolytic caps is reduced 2x for each 10degC increase. In that case it will be 2x2x2=8 times. It will reduce 8x life of all capacitors in this cabinet. Sliding tray or fan or ... | |
| Best sounding transistors What is NOS? (It usually means "New Old Stock" when you buy transistors on ebay, but I'm sure Nelson Pass doesn't do it) | |
| The effect 60Hz Cycles on 50Hz SACD-PLayers Transformer might be slightly more efficient at 60Hz but it doesn't make much difference when power is low (SACD etc.). Filtering after rectification will leave a little more ripple but it might be inaudible. Motor might be a "Step Motor" being... | |
| storage options for MacBook Air Scar972, Ignore my argument about longevity of SSD. Music library doesn't add any burden since it is always read operation during playback. |