You asked how a frequency response can decide why an instrument sounds natural or not, I simply answered. This is a forum, if it won't help you it will surely help someone else. Czar is correct when he says that FR is not a determinant of sound quality. Someone can prefer a vastly different FR...

I understood that the planar does not do treble. Looking more carefully at the frequency response of the driver used, it does some of the treble in combination with the BA, which definitely does some treble too, the additional output at 4k and 15k expected from a 30095 driver roughly matches the...

This whole "The FR is limited by the driver" is COMPLETE bull. That's just not how it works. A good driver will provide a good FR, and a good FR means a good driver, as long as THD is under 1% at n=3 and the phase response isn't a complete mess. We know that FR is 99% of what a speaker does...

Well my KZ ZST now sound a lot less loud and muffled on one side. It seems as if one of the drivers disconnected. I'll see if I can fix it, it's definitely not a wire problem since I switched the wires, neither is it and ear problem. The frequency response also changed.