In the rear I had the tweeters deleted as they are up near your head and too "buzzy" for my liking. They are 2 way coax speakers, which is a better mix IMHO.
The Hertz speakers are superb. They fit very well with the GTI and have a good reputation, so they don't tend to advertise as much as some other makes of speakers.
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The focals look good, but the hertz ones I have are a higher spec.
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I've had the doors and boot Dynamatted to help deaden out unwanted vibes and it works a treat. 
John, this must be a couple of hundreth's surely 
True, but I luv my soundz too much
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