Re: Need more punch and less of the low end vibration.
Make sure your filters are set correctly, first. If that doesn't get you your desired results, you may want to give your 6.5's a more bass-friendly environment. You could start with properly deadening your doors, or building kick panels.
A ported box may or may not get you what you want, but I personally prefer ported over sealed anyday if you have the space for it. You'll increase overall output and frequency range if its done properly. You may also want to consider upgrading your amplifier and your sub - 150 watts dispersed amongst 3 sets of speakers and a sub probably won't get you the bass output your looking for.
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Gearguy2001 (American Bass SQ780)
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