Klipsch Heresy IV

I have heard a few of Duke's speakers. They sound great. They also had rear ports.

I think it is patently absurd to assume that any redesign will automatically sound better than its predecessor. 

My point was and is that ports require a smaller cabinet than sealed. Last time I looked simple laws of physics applied to all speaker companies even Klipsch. 

I agree.  Until someone actually listens to the new Heresy, there's no way to tell.

I liked the 8 ohm compatible statement on the website when addressing the impedance of the Heresy. 

Yeah...10hz is right...oops.