Focal gets a lot of hype in online headphone discussion forums these days. For those unfamiliar, Focal utilize a novel 'inverted dome' diaphragm for their drivers. . . one of the known issues for this is that they hard clip at higher volumes, but this is not often an issue for reasonable listening levels. I am curious if there are other unspoken limitations, given the apparent novelty of this driver approach.
Despite a humiliating fiasco for Utopia manufacturing precision (https://www.innerfidelity.com/content/focal-utopia-update), Tyll had an enduring fascination with the brand. I personally think this informs a lot of the current enthusiasm. I have recently been looking at spectral decay plots, something that unfortunately Tyll could not produce on his otherwise legendary test rig.
It appears to me that the inverted domes could have a similar persistent issue with spectral band ringing in the upper mids:
Focal clear CSD (https://www.soundstagenetwork.com/index.php?option=com_content&view=article&id=1823:focal-clear-headphones&catid=263&Itemid=203)
Despite the lower spectral res of this CSD, we see similar resonant peaks in the upper mids. . .
In a hobby where folks claim to differentiate between amps/DACs at >120 dB SNR, it seems a bit telling that relatively pronounced -20 dB ringing has gone without objection on these 'end game' cans. . .
Thoughts? Is this another fundamental (if relatively unobjectionable, given the resonance window) shortcoming of the 'inverted dome'?