I sealed up the doors in my girlfriends car and put my Polk db6501's in her ride... I upgraded myself so I passed these on to her. I put them on my Coustic 510DR and they are running from an old 3100ub Pioneer.
Long story short, no matter what adjustments I make the the eq, they sound like crap. Could the 2v preouts have anything to do with this? They aren't distorting like they have too much bass or anything, just sound awful. HPF set to 100, no sub while adjusting.