Firedrops
New Head-Fier
- Joined
- May 6, 2012
- Posts
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- 30
Just made some measurements of a bunch of dynamic drivers from Taobao, these were chosen quite randomly (mostly by their marketing material and/or user feedback), might be of help to anyone else interested in incorporating dynamics in their projects. Not really my point to endorse any specific shops, so I just put their images on top. There's also 2 "biological" polymer drivers, not enough to conclusively say that they're different from traditional materials.
Notes: Measurements with Dayton IMM6, FFT Plot on iPhone 6s. "Coupler" was a repurposed pen rubber grip, insertion depth 12±2 mm. No nozzle or case was used, seal was ensured by blutak. A periodic white noise file was used (Check Crinacle's thread), and no burn-in was done. Realised at the end that I accidentally switched measuring modes (Graph to Simple, Average to Infinite) halfway through, so do take note of those differences. I try to get the average volume to 0db, but the drivers vary widely in sensitivity, as much as 3 volume notches on iphone 6s. No subjective comments yet, have not tried them in ears.
Most are 9/9.2mms, with a 8mm random gift and 2 10mms at the end. I'll note any exceptions.
The following exhibits very weird bass region. I noticed this early and re-tested/sealed multiple times, even checking other drivers and coming back to this, but it always ends up like this, so it might be just a driver quirk or some other very odd and specific interaction with my setup.
Following is advertised as a "Biological" polymer
Following is a 8mm! Random gift from one of the sellers.
Following measurements are Average "Infinite" and Graph "Simple"!
Following is advertised as a "Biological" polymer
Last 2 are 10mms.
Notes: Measurements with Dayton IMM6, FFT Plot on iPhone 6s. "Coupler" was a repurposed pen rubber grip, insertion depth 12±2 mm. No nozzle or case was used, seal was ensured by blutak. A periodic white noise file was used (Check Crinacle's thread), and no burn-in was done. Realised at the end that I accidentally switched measuring modes (Graph to Simple, Average to Infinite) halfway through, so do take note of those differences. I try to get the average volume to 0db, but the drivers vary widely in sensitivity, as much as 3 volume notches on iphone 6s. No subjective comments yet, have not tried them in ears.
Most are 9/9.2mms, with a 8mm random gift and 2 10mms at the end. I'll note any exceptions.
The following exhibits very weird bass region. I noticed this early and re-tested/sealed multiple times, even checking other drivers and coming back to this, but it always ends up like this, so it might be just a driver quirk or some other very odd and specific interaction with my setup.
Following is advertised as a "Biological" polymer
Following is a 8mm! Random gift from one of the sellers.
Following measurements are Average "Infinite" and Graph "Simple"!
Following is advertised as a "Biological" polymer
Last 2 are 10mms.
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![20170831_061849[1].jpg](https://cdn.head-fi.org/a/10001928.jpg "20170831_061849[1].jpg")
![20170901_122611[1].jpg](https://cdn.head-fi.org/a/10001929.jpg "20170901_122611[1].jpg")
![20170918_161228[1].jpg](https://cdn.head-fi.org/a/10002736.jpg "20170918_161228[1].jpg")
