I meant to say vocals are NOT high or clear in the heading.
I replaced by my front coaxial JL speakers with Focal components and a 2 channel Amp (MB Quart 100 RMS per ch.). The sound quality is really bad compared to before (JL fronts and no amp) . Mids and highs are flat, muffled and not very clear. Definitely not like the Focals I have listened to. Focals treble is generall little bright but mine is exact opposite. I doubt the speakers are defective. I played with my aftermarket head unit's audio controls and increased the treble and mids but I am not satisfied. I cannot adjust crossovers because the installer put them inside the door. The installer suggests I put a more powerful amp or a Line Driver to boost the signal. He said he could install a 'Line Driver' at the amp to boost the HU's signal for $200. The line driver he has is this: http://www.gotwirez.com/p/125/lcdss10-2.The speakers are here
I appreciate any helpful suggestions. I really don't know what to do than hire another installer to trouble shoot.