I'm FINALLY able to hear the trebble and mid range I have always wanted. The woofers are nice but my 10" sub and aftermarket amp took care of any missing frequency below 120 anyhow. So I could have just upgraded the mid and tweet and been happy I bet BUT why stop there if I have the parts? I do think I can hear different sounds from the woofers tho (tho it could be mind tricks) but no doubt about the tweeter and mid range upgrade!!!!!

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I swear, my cars are like a girlfriend.
Sometimes its a rough ride, sometimes its smooth motorin'.
Sometimes she doesnt like how i treat her and sometimes i dont like how she behaves.
BUT at the end of the day, she loves it when I am inside her.

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'91 850i
'05 X5 4.4i
'09 Clubman S