Klipsch Heresy IV

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.

I had the opportunity to listen to both the Heresy IV and Forte III yesterday, putting both through their respective paces with a playlist of Al DiMeola, Rob Wasserman, Alison Krauss, aria from La Wally, Japanese Drums, Don Shirley, Ron Carter, Brad Mehldau and Sade; short of teeing up Zeppelin, it was a diverse playlist. Frankly, I was disappointed by the Fortes in comparison - the Forte midrange was not as supportive of vocals as that of the Heresy. Bass on the Heresy, located 2 feet from the back wall, was absolutely superb; every pluck of Wasserman and Carter's fingers was perfectly rendered - very fast action ( thanks to the porting ?). I purchased a pair of the Heresy IVs but must forewarn all that these speakers require both the highest quality source material and well-matched components; your average bluetooth streaming service will leave you disappointed on some tracks. Now, where's that Joe Satriani ?!?