>>I have suggested an EP400 enough times that it has become a standing joke around the Axiom factory.
Now that Axiom has launched the EP400 as a "smaller but still really powerful" baby brother to the EP500 I guess they're going to have to call "my sub" (EP350 guts in the larger EP500 box) the EP350 v3
Hsu did the same thing a few months back -- moved all of their subs up one "box", eg. putting the VTF-1 guts in the VTF-2 box, VTF-2 guts in the VTF-3 box. That caused a couple of my Hsu-owning friends a lot of grief because it meant that they could no longer get turbo kits for their VTF-3s, so they no longer had an upgrade path.
As jakeman posted above, relying on just the enclosure to get deep bass brings other problems; the "EP350 v3" would be at its best as a movie sub and probably not as good as the current EP350 for music -- but IMO the "reasonably priced killer movie sub" is the biggest need and I *think* the results for music would be pretty good.
Going back to an earlier post, I think the purpose of the high pass filter on the PB10 was not so much increased headroom as trying to avoid exciting the enclosure around the 18-20 hz tune point, so the sub can't "muddy" the sound by having the enclosure & port continue to resonate after the initial sound has gone away.
Hey... a high pass filter switch would be a great feature for the EP350v3
