itsjustme
Responses from itsjustme
| Class A into Class AB Geez i fell like a detective, and with that data inspector Clouseau to be specific.....per the threshold - complete the math!! 100mV across what? What's the derived current (which is what matters)? Across the emitter resistors, which are what va... | |
| Class A into Class AB that in an RMS sense… it is mostly Class-A.I think you mean in an **average** sense. RMS has to do with how we measure a wave: peak, average, or "area under the curve" (root mean square or RMS). It is quite different. For a sine wave RMS = aver... | |
| Class A into Class AB 6 watts is quite a lot of class A power. Given that most decently recorded music has a peak:average ratio of ~ 10 or more, that means that peaks would be 60 watts if you were, on average running in class A.And 6W is a lot of power! (surprisingly)... | |
| Aurender music servers: higher priced ones sonically better? i don't know if i can find my old post - its a needle in the haystack. You might search on my user name. But most of it is blocking and tackling - clean power, clean grounds, isolation, keeping nosy digital devices away from sensitive analog ones... | |
| USB signal timing goes mainstream. Just an FYI I almost regret posting this. Don't take much into that article except to point out that timing (not just bit recovery can be a real issue, and that when that bit transition is used in part to determine fully half the reconstructed waveform (the ... | |
| 16 bit vs 24 bit vs 35 bit vs 36 bit vs 64 bit DAC sampling to several who have noted (correctly) that 20 bits is all that can be truly used ( and I'd argue more like 17), but wonder, "why 32, 35, 64, (finger to mouth 1 million)?Before going on i have also seen "but rate" and "but depth" used. Let's be c... | |
| Tube or R-2R DAC for Tube System @charles1dadsI I must be missing your point,since i addressed why one of those options is commonplace and sub optimal, and the other has serious issues. Could you clarify what you are pointing out, or want to know?G | |
| Tube or R-2R DAC for Tube System Learning now! Entirely passive seems like a tough proposition since the output will have a variable impedance and a high one at that. For a home/hobby project where you can control the next stage maybe its feasible - but in commercial proactive ... | |
| USB signal timing goes mainstream. Just an FYI I am not going to argue with you. I sat with MPEG int he 90s and learned a great deal about what we cannot measure well. Mostly i learned that there is much i don't know and it best to begin with empirical data rather than accepted rules.I actual... | |
| Tube or R-2R DAC for Tube System there seems to be some confusion with terminology. Multibit = R2R. They can be discrete resistors soldered onto a PCB or thin or thick film hybrids on a IC; but they are both ladders, and both take in PCM and spit out PAM.Bitstream is a differen... | |
| Aurender music servers: higher priced ones sonically better? The problem is PCs are simply not created with noise reduction and power conditioning in mind.Correct. Which is why i advocate simply isolating it and creating a dedicated low noise power supply on the "clean"side and allowing the Mac streamer to... | |
| USB signal timing goes mainstream. Just an FYI Your basic argument is "you cant hear it". This is quite different from "it makes no difference" and the audibility is debated by many. Including me. I cannot explain it (and noted that above), i understand precisely what you are arguing, but neit... | |
| USB signal timing goes mainstream. Just an FYI i should clarify; i presume you mean DAC as master clock, with the ability to terminate, buffer, & re-clock, whcih is what i do and what i believe meitner does. | |
| USB signal timing goes mainstream. Just an FYI The best USB DACs for music all use asynchronous mode. Eliminates this as an issue. I could go into detail. But do your own homework. EMM does, Wavelength Audio (Gordon Rankin) does.. as do many others.You are correct both in the fact that t... | |
| USB signal timing goes mainstream. Just an FYI Just sayin', none of that technical gibberish ( and I'm a 30+ year EE in both fields) has the slightest thing to do with clock recovery and timing. The fundamentals persist regardless of forma or content - the bits must be recovered, and in digit... |