The service itself from spares2repair is excellent, no questions asked.
But the sound of the drivers itself is of course not for everybody, there are a lot of high frequencies, and no equalizer helps, so the sound becomes barrel-like.
That's why I didn't like the sound because of the ton of treble, they have a lot of high frequencies , which are also emphasized compared to others .
It is difficult to fix this because by changing through equalizer, the sound also changes and becomes more barrel-shaped.