analogsurviver
Headphoneus Supremus
- Joined
- Jul 2, 2012
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Quote:
It is not off topic - at all. Issues arising from time related problems in audio are ALWAYS connected with equipment one uses - from microphone setup to loudspeakers or headphones, recording medium and every electronic stage in between.
A typical multimiking setup or studio recording/mastering will have such groos distortion in time coherence that it almost does not matter whether speakers or headphones are time coherent or not - time errors in recording are so big that smaller errors a loudspeaker or headphone/IEM can cause are next to negligible.
A carefully placed pure two mike setup or artificial head (binaural) that introduces zero time errors ( other than natural in any real recording venue that is not anechoic chamber ) will ruthlessly expose such time errors in either speakers or headphones/IEMs. I wish I could afford Sennheiser IE800 ( a wide band one way single driver ) - or at least have the chance to audition them using my own recordings and others I find of acceptable quality. Or lesser IEMs with a single good BA, like Ortofon etc.
Half a wavelenght at 20 kHz is 17 mm, meaning a 180 degree phase shift is when your drivers are 17 mm apart; that is a bit much, but you can hardly reduce physical displacement of drivers below 3 mm in multi way IEM. It is also true that crossover frequency usually takes place lower, making it easier. Yet - go to inner Fidelity measurements, look up Shure top models, and you will notice that although their frequency response in amplitude is pretty flat and extended, square wave reproduction will reveal first negative blip from the tweeter, etc - compare that response to any good single BA and you will see what I mean. Multi driver IEM manufacturer would perhaps be the last person interested to show any pulse response(s) - unless per some extremely difficult process bordering on miracle arrived at a point multidriver sound output blends so well that remaining inevitable time discrepancies approach zero and are effectively offset by increase of dynamic and frequency range of the resulting uber multi driver IEM. I would consider such IEM that would through any measurements that show performance in time domain approach/meet the performance of best single driver IEMs while improving in dynamics and/or extension. It can be extended and flat from DC to light while being flawed in time domain - I would keep on trucking with a $5 single dynamic driver chinese IEM that does better in time domain. I certainly do like extended response below 20 Hz and WELL above 20 kHz - but would always take something that is rock solid from 100 Hz to 10 kHz over patched together more extended competition.
Analogsurviver I'm going a bit off topic but you mentioned you prefer one single driver be it headphone or iem. A lot of high end iems are ciems and most of the high end ones are multi-ba drivers. What's your take on that?
It is not off topic - at all. Issues arising from time related problems in audio are ALWAYS connected with equipment one uses - from microphone setup to loudspeakers or headphones, recording medium and every electronic stage in between.
A typical multimiking setup or studio recording/mastering will have such groos distortion in time coherence that it almost does not matter whether speakers or headphones are time coherent or not - time errors in recording are so big that smaller errors a loudspeaker or headphone/IEM can cause are next to negligible.
A carefully placed pure two mike setup or artificial head (binaural) that introduces zero time errors ( other than natural in any real recording venue that is not anechoic chamber ) will ruthlessly expose such time errors in either speakers or headphones/IEMs. I wish I could afford Sennheiser IE800 ( a wide band one way single driver ) - or at least have the chance to audition them using my own recordings and others I find of acceptable quality. Or lesser IEMs with a single good BA, like Ortofon etc.
Half a wavelenght at 20 kHz is 17 mm, meaning a 180 degree phase shift is when your drivers are 17 mm apart; that is a bit much, but you can hardly reduce physical displacement of drivers below 3 mm in multi way IEM. It is also true that crossover frequency usually takes place lower, making it easier. Yet - go to inner Fidelity measurements, look up Shure top models, and you will notice that although their frequency response in amplitude is pretty flat and extended, square wave reproduction will reveal first negative blip from the tweeter, etc - compare that response to any good single BA and you will see what I mean. Multi driver IEM manufacturer would perhaps be the last person interested to show any pulse response(s) - unless per some extremely difficult process bordering on miracle arrived at a point multidriver sound output blends so well that remaining inevitable time discrepancies approach zero and are effectively offset by increase of dynamic and frequency range of the resulting uber multi driver IEM. I would consider such IEM that would through any measurements that show performance in time domain approach/meet the performance of best single driver IEMs while improving in dynamics and/or extension. It can be extended and flat from DC to light while being flawed in time domain - I would keep on trucking with a $5 single dynamic driver chinese IEM that does better in time domain. I certainly do like extended response below 20 Hz and WELL above 20 kHz - but would always take something that is rock solid from 100 Hz to 10 kHz over patched together more extended competition.