Serenity - I recommend looking at both the SVS site and Axiom's site for response curves as measured by both SVS and Axiom in anechoic settings, then compare them to our in room curves using Audyssey. Based on the results here, it is clear that Axiom does not put much EQ into the EP-350. Most ported subs (both the Klipsch and SVS are examples of this) have a fair amount of eq built into the amp.

I am trying to keep the conversation to what can be achieved for the normal subwoofer buyer without making it too complicated, which is why I am limiting this to one curve, at the listening position, with each sub, using only Audyssey.

Later, we will be doing some tests with an Antimode.

Chess - yes, it is the V.4 sub. It's a solid little beast, too. Your comparison on the 16-46 was a fun read. I had a pair of 16-46 Plus in our basement theater 13 years ago, and they definitely went DEEP.