I've had the Polk Momo6500 for 2 Yrs how..i can tell u the Kappas got nothing on the Polks. the Momo components have been compared with Focal/type x/kappas. Other high end SQ components
I Love the natural sound from the momos, they do need time to break in though.
-As for the Lows 43Hz ..speaks for Its self
-Tweeter are very detailed when the crossover is at -3dB (adjustable tweeters Frequency)
-Also, u have the options to run it active/passive on the crossovers!! not alot of other crossover come with this options!!
Polk Momo MMC6500 FTW!!!