The problem is that these are HP impedance 2 ohms contrary to what is said on the site. So you have a very good amp for the driver correctly. Too bad the impedance of 4 ohms would have been I would have noted the note.
The acute and the medium is good, is not acute but the sound is aggressive for my taste a little too bright. This is easily corrected with the equalizer of the stereo. HP These are for me very well in the midrange and treble.