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  1. MayaTlab

    Mark Levinson № 5909 headphone

    This is the Mark Levinson's response measured at the blocked ear canal entrance for more than a dozen actual humans (not directly comparable to measurements made at the eardrum on ear simulators past a few hundred Hz !), in a mode where the ANC feedback system is turned off (presumably wired...
  2. MayaTlab

    Bowers and Wilkins PX8 Wireless Discussion

    There is a rather simple explanation for that, that would need to be controlled for before exploring other causes than FR : your own samples, once EQed to a target according to other samples measured on ear simulators, still won't have the same FR once they're on your head. Either because of...
  3. MayaTlab

    Introducing MOMENTUM 4 Wireless

    This is partly a hardware issue that I don't think can be easily solved by a firmware update. Some - actually most - ANC headphones tend to vary quite a lot with coupling in terms of FR above the range where the feedback mechanism operates. More on what the effect of the feedback mechanism is...
  4. MayaTlab

    Bowers and Wilkins PX8 Wireless Discussion

    Interesting ! Same seating as one of the ANC on traces ? It would be nice to try to test them under varying degrees of pad compression with ANC turned off to determine whether or not the feedback system operates in that mode (probably not).
  5. MayaTlab

    Bowers and Wilkins PX8 Wireless Discussion

    Interesting. Now this is just me but the rather problematic yoke design limits the range of motion of the earcups, and it's quite susceptible to leakage. I also found the ANC off sound to be a bit more anemic in the bass than the ANC on sound.
  6. MayaTlab

    Bowers and Wilkins PX8 Wireless Discussion

    ANC and transparency ? And ANC off measures differently ? If you mean ANC on vs off, then, if the feedback mechanism is inoperative when ANC is turned off (as it is for nearly all ANC headphones), then it should be no surprise that you may experience a difference between the modes.
  7. MayaTlab

    Apple AirPods Pro And NEW AirPods Pro 2nd Gen (from 23 Sep 2022) - Impressions

    The APP2 introduces a volume dependent EQ in an attempt to respond to that phenomenon : https://en.wikipedia.org/wiki/Equal-loudness_contour In other words the FR will change depending on the volume you've set your APP2 at.
  8. MayaTlab

    Bowers and Wilkins PX8 Wireless Discussion

    That is also my opinion, but I'll qualify it : the presence of a feedback mechanism precisely means that there will be less variation across individuals than typical closed back, at lower frequencies. Across the feedback range, measurements should be very reliable if the feedback system is...
  9. MayaTlab

    Bowers and Wilkins PX8 Wireless Discussion

    The variation on the Bathys may not directly come from the DSP - the latter might actually reduce it. But it's possible that the ANC / feedback system implementation mandated some choices to be made that increased the Bathys' sensitivity to coupling issues above where the feedback range...
  10. MayaTlab

    Introducing MOMENTUM 4 Wireless

    Thanks for letting us know ! Will we be able to control the centre frequency and perhaps even the Q factor or am I being too greedy :D ?
  11. MayaTlab

    Focal Bathys Hi-Fi Bluetooth & ANC Headphones: Early Impressions

    I believe you're talking about the comment starting from 12min ? The presence of an always-on crossfeed in the Bathys should be testable. I find it weird though that he links the presence of a 900Hz dip with crossfeed. Is there a good explanation for why the two would be related ?
  12. MayaTlab

    AirPods Max

    My feeling is that people tend to ascribe to DSPs far more than what they should. I don't think that the Airpods Max are doing anything particular at higher frequencies. More likely is that the treble response simply is quite uneven for most users, even though it might be at the right level when...
  13. MayaTlab

    Apple AirPods Pro And NEW AirPods Pro 2nd Gen (from 23 Sep 2022) - Impressions

    Ah OK, so a different issue. For the APP2 it is a specific problem whereby the audio shifts left or right - or at least the FR changes, asymmetrically so, when switching from ANC off to on, and continues to change a bit for a few seconds.
  14. MayaTlab

    Apple AirPods Pro And NEW AirPods Pro 2nd Gen (from 23 Sep 2022) - Impressions

    Interesting. Was that when moving from ANC on to off, or moving from ANC off to on ?
  15. MayaTlab

    Apple AirPods Pro And NEW AirPods Pro 2nd Gen (from 23 Sep 2022) - Impressions

    Low given that it would expose Apple to legal proceedings. I don’t think that there is any evidence that they actively tried to change the tuning of their AirPods via firmware updates over time.
  16. MayaTlab

    Apple AirPods Pro And NEW AirPods Pro 2nd Gen (from 23 Sep 2022) - Impressions

    I am not entirely enthused by it as well compared to a (new and working well) pair of the APP1. To me it's rather a trade-off, both being fairly decent deviations from ideal.
  17. MayaTlab

    Apple AirPods Pro And NEW AirPods Pro 2nd Gen (from 23 Sep 2022) - Impressions

    Are you basing these impressions on quickly switching between ANC off and on ? If so would you mind trying a little test ? Continuously play pink noise through the APP2. Switch between ANC off and on rather rapidly. Do you occasionally notice that at some frequencies the channel balance may...
  18. MayaTlab

    AirPods Max

    I'm wondering if the material is susceptible to get more or less distended over time because of concerns such as humidity levels or chemical reactions with hair or hair products. I've seen quite a few demo units with a completely distended mesh, but they're put under very heavy use, so, who...
  19. MayaTlab

    AirPods Max

    I think that you mean that we observe on the emitting device (ie variable quality of the AAC implementation) might also be present on the receiving end as well ? This is something I've long wondered. I've seen that occasionally tested on ASR with BT dongles, you may find the Qudelix 5K's AAC...
  20. AKG N700NC

    Hello, I'm selling a pair of AKG N700NC. This is the first version with the TruNote feature and micro-USB. They were purchased in like new conditions from a serious Ebay retailer and are still in like new conditions. Sold with all the original accessories, the box and the invoice. I can...
  21. Sony PFR-V1

    Hi, I'm selling a pair of Sony PFR-V1 in their original box. They're one of Sony's weird and mad audio experiments : two tiny speakers suspended in the air next to your ears. Do they sound good ? Hell no. Are they comfortable ? Absolutely not. Are they nonetheless utterly fascinating ? Hell...
  22. AKG K371

    Hello, I'm selling a pair of AKG K371. They were purchased in 2021 from Thomann.de. It's the version with the updated packaging that adequately protects the pads while shipping. As a result the pads are in a very good shape and clean. The headphones work well without faults and have very few...
  23. Hifiman HE400se - Stealth Magnets Edition

    Hello, I'm selling a pair of Hifiman HE400se. They're the Stealth Magnets Edition. They were purchased new in July 2021 from Son-Video.com. The headphones are in a very good shape and work perfectly. Earpads and headbands are clean. Sold with the original cable, box and invoice. I can ship...
  24. Sennheiser HD 560S

    Hello, I'm selling a pair of HD 560S purchased in 2021 from Thomann.de. The earpads are clean and in good shape. The headphones are in a very good shape and work perfectly. Sold with the original accessories (3m cable + 3.5mm jack adapter), box and invoice. I can ship them throughout...
  25. Sennheiser HD 650

    Hello, I'm selling a pair of HD 650 purchased in 2021 from Thomann.de. The earpads have recently been changed and they're the pre-2021 version (I have a whole stock of these). They're in good shape and clean. No paint chipping. Sold with the original accessories (3m cable + 3.5mm jack...
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