a-LeXx
100+ Head-Fier
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- Nov 30, 2004
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Guys,
Thanks for pointing this out, it is a typo, as well as our other sensitivity measurements methods being old. This was something I had been meaning to correct but in the dust up in our launch during the pandemic I missed doing so, apologies.
We measure now and express in volts, the drive needed to reach one pascal @ 1 kHz (94 dBSPL) then state the drive in mVrms needed to achieve 94 dBSPL @ 1 kHz. We feel that this is more meaningful than other ways of expressing sensitivity, and also more meaningful than how we use to show it. We will update the sensitivity in the specifications accordingly. Thanks again, and here are the sensitivity specs for the three new models:
John Siau wrote a great piece on sensitivity measurements over at Benchmark that I think does a good job at explaining this. Here's an excerpt from it:
- Ara: 94 dB SPL @ 1kHz: 7.094 mVrms
- Solaris 2020: 94 dB SPL @ 1kHz: 6.54 mVrms
- Andromeda 2020: 94 dB SPL @ 1kHz: 7.01 mVrms
How can I judge loudness from headphone sensitivity specifications?Headphone manufacturers have different methods for specifying headphone sensitivity. This makes direct comparisons difficult without doing some math.Sensitivity is often expressed as dB SPL at 1 mW (acoustic output as a function of input power). This "power sensitivity" specification makes comparisons complicated. This specification tells us nothing about the loudness of the headphones at a given voltage unless we also know the impedance of the headphones.In contrast, Sennheiser specifies sensitivity in terms of dB SPL at 1 Vrms (acoustic output as a function of input voltage). Sennheiser's "voltage sensitivity" method takes impedance out of the equation and allows direct comparisons without making calculations."Power sensitivity" must be converted to "voltage sensitivity" before we can directly compare the loudness of our headphones.
Here's a link to John Siau's entire article: https://benchmarkmedia.com/blogs/application_notes/14017381-headphone-impedance-and-sensitivity
Jude also wrote some more great information about measuring headphone sensitivity, as this topic can be confusing. Here's a link to that: https://www.head-fi.org/threads/sen...essions-thread.197776/page-2669#post-13803816
Sorry for any errors and for any confusion. Again, we'll be updating the sensitivity specs on our website accordingly.
Hope this helps.
Ken
Thanks, now it makes perfect sense. Ok, in other words, it means actually nothing has changed in sensitivity for ARA compared to previous models, it‘s almost the same as Andromeda, as would be expected. This explains why it was reportedly easy to drive, even though the spec suggested something different.