how much bass are these things gonna take away? Cause my speakers (4"front 5 1/4"rear) can dish out some really nice bass lines(311 oh yah!) but the very low bass gets scrambled like eggs and distorts the sound comin out of the tweeters. I was looking on crutchfield and wondering why do they offer 150hz 300hz 600hz 800hz, would this be a factor in choosing how much bass is going to get through? also could someone explain to me "6db octave slope"?