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Earfun Free Pro 2 - all "smooth tunings" finished
🕑 Added 2021-12-28 15:33:27 +0000 UTCI finally finished all smooth tunings which can be found here. There are 10 different tunings within a range from 5450Hz to 7650Hz with about 1mm difference between each of them. Values above 7650 or lower than 5400 are hard to handle, therefore I hope I covered all necessary values. Please let me know if your resonance is higher or lower than that.
Above you can see an overlay of all measurements at their corresponding resonance frequencies. I tried to stay as close to my own 6000 tuning as possible, although above 14khz it was impossible and there is some stronger variation which may need further tweaking. The visible difference in bass is only due to different insertion depth, because the couplers measure more bass witha more shallow insertion.
Please let me know how the result sounds to you and if it needs some correction. I cannot verify them by ear, but I tried to check if the nearby tunings are valid by inserting the earbuds either more shallow or deeper and the corresponding tunings definitely sounded better to me than my original one.
I welcome any input for further improvement so feel free to send me your corrected values including your resonance if your tweaked settings sound considerably better than my botched ones.
Update: I added an additional 8000Hz tuning, like this I am covering a full centimeter of ear canal length. Here all caluclated resonance values and the rounded ones used for the tuning.
I also adjusted the 6250 tuning as it appeared a bit dark to me when I inserted them deeper to achieve this tuning. Keep in mind that you can vary the insertion depth a lot which will also affect your resonance frequency by twisting them inside your ear. I get a higher frequency if I twist them to the back, you can still fine tune the treble timbre like this if treble doesn't sound right to you, I am not even talking about sample variation which will mostly affect treble.
Someone suggested an even flatter bass response with these values:
65hz -16db
365hz -5.0db
I personally prefer something inbetween with 65Hz at -15dB and 365 -5dB, but you can adjust everything to your taste.
