And the resulting diaphragm is even lower - 6.5%, which is lower than aluminium. I think they've reduced the thickness of the diaphragm or something because in earlier articles the spec was double that - 130GPa (example). At this point I have to wonder how closely production performance will...

Any idea when sales will open up again for those of us that missed the kickstarter/indiegogo? Also - judging by the amazing measurements, this tech will be a gamechanger not only for headphones but even more so for full size speakers. Any idea when we can hope to lay our hands on full size...

  Quote: Higher impedance models use a thinner, lighter voice coil. Ideally the voice coil should weigh nothing.

Quote: In these DACs, the clock is generated in the DAC itself and sent back to the PC. This effectively makes the PC just a data source, and jitter of signals outside of the DAC become unimportant (so long as they don't result in data corruption).   In terms of technology, there is...

  Quote: Answers in bold.   I would've thought you guys would jump at the chance to eliminate these PC/Software/Jitter related effects.

Quote:   Agreed. This is one of the easier audio questions to resolve. All it would take is someone with a DAC where the clock is generated at the DAC end rather than the PC end, and which is digitally isolated from the PC. Such a DAC would be impervious to any possible software, PC or...

Quote: Agreed. But when dealing with oversampling there's always some trade-off. If you use slow roll-off you get higher aliasing. Less aliasing, more Gibbs. And it's not even certain to what extent either of these are audible (if at all). All these (and many other) "issues" would very...

Quote: Ah yes, that looks like the best explanation. Matches up pretty well from memory.

  Quote:   I'm a little puzzled by the slow roll-off. The DAC already implements a brick-wall filter so there's no point in the slow roll-off. It doesn't reduce Gibbs phenomenon since the filter slope is very high anyway, due to the brickwall. I can only guess that either it's a poorly...

Quote: Judging by the oscillator frequency it looks like this is an oversampling DAC after all.

Correct me if I'm wrong but that PCB looks like its been soldered by hand. There's even a pair of bridged pins on the top left.   The two channels are virtually crammed up against each other, which, if the layout isn't effective, would explain the cross-talk. The digital side of the PCM1704s...

  Quote: What you say is only true if all of physics, neuroscience and signal theory are entirely "complete" and entirely "true". That assumption is demonstrably false.   Secondly, when you say "Hallucinations aren't truths, they're just perceptions.", it's true but not the complete...

  Quote:    "The easy confidence with which I know another man's religion is folly   teaches me to suspect that my own is also." - Mark Twain   See http://en.wikipedia.org/wiki/Scientism.   Quote: There is no 1:1 correspondence between a wavelength of light and a...

Quote:   I wish I could find one wearing 19th century clothing to make the analogy complete.

Those results show that the HM801 is using a sharp roll-off output filter. The slower roll-off is either due to an additional filter, possibly internal EQ, or due to NOS.   Gibbs phenomenon is roughly as bad as other DACs, as expected from the sharp roll-off. There's nothing special about...

Some low resolution applets exist on the web to do this. There is some variability in the results, but that's the nature of what you're measuring - perceived loudness. Generally its pretty accurate though.   By the way I agree completely with this: Quote:   Here's a graph...

There is no direct measurement for this. The closest is probably intermodulation distortion. Possibly also spectral decay graphs.

Quote: Even if you don't want room simulation, you'll still need some kind of individualised HRTF processing to achieve what you want. There are no two ways about it. Moving drivers around, angling them and changing the size or material of the enclosure simply can't produce 3D sound like...

If you don't believe a flat, centralised driver can give a 3D SS, you should try one of the true HRTF processors like Smyth. You'll quickly change your mind.   Angling the drivers, increasing the enclosure size, etc...these make only a small difference in the big picture, where  "real life...

Quote: You're talking only about resonances. Resonances arent the only effect which influences the sound in this context.   Also, dynamat only works within a relatively small bandwidth and it has a limited effectiveness. It doesnt eliminate resonances, it dampens some of them.  ...

That's true, but my god I hope nobody is using the K1000 to listen to music which is so compressed

udauda, those charts refer to average sound pressure level, not peak. The calculation of 99dB SPL is the maximum SPL you can expect from that amp/can combo. In properly mastered music, the peak SPL can be more than 20db higher than the average.

Quote: Can you cite some evidence for this? Namely that the same album is mastered twice - once for vinyl and once for CD.

Jazz, you have more patience than a swami. After I read the post you're replying to, I could only sit there and wonder how someone can make such an argument and not have their brain just give up and evacuate their skull. Seriously. Wow.

I came across some software that can do this a while ago. Can't remember the name anymore, but it wasn't free. Mind you the result won't be as good as measuring real HRTF with in-ear microphones. And then there are about 50 terrible ones.