I don't think you can really call it a fact as it was based on your opinion and experience. You might find it lackign deep bass and crisp highs, but to another person might be enough bass and highs. Just remember, a nice sounding system has to be balance, not too much high and not too much bass. You can call it a fact if all the new TL owners agree with you.
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Comptech Icebox, Headers, Exhaust, Lowering Springs and Sway Bars. Mugen front grille. Inspire tailamps. MOMO Sport 18 X 7.5 +42 offset. Axxis Metal Master front/rear pad. 2 Polk/MOMO 10" subs, Orion Xtreme 500.4 amplifier and Alpine CD changer.