I've always believed that room acoustics are the ultimate determining factor when it comes to sound quality. I still do. Be that as it may, I heard the sub25 in a dedicated room, with zero acoustic treatment whatsoever, in a room corner.
My thoughts ? The sound I heard in that untreated room was better than in my treated room with bass traps. I have 4 tri-traps, stacked from floor to ceiling. So even with that amount of bass trapping, the Paradigm basically smoked my set up in terms of articulation and overall 'tightness'. Believe me, 4 GIK tri-traps will improve the bass definition and clarity by large amount.
There was no equalization at all when I heard the sub. It was just plonked into a corner and the bass was superior to my treated set up with a MFW-15. I'm not talking about sheer air moving ability or deep bass extension. It most likely would beat my single MFW-15 in those areas too, but the areas in which the sub excelled was in overall tightness and articulation; you could hear each bass note decay quickly with almost no overhang at all. It sounded like the room had been covered with bass traps in all corners. I think that's a serious compliment.
Now I know my sub is only a fraction of the cost and shouldn't really be compared, but the bass traps I've added to my set up has really improved the definition and articulation. Before it sounded muddy and 'slow'. So although I should expect more from a far more costly sub, I assumed that my set up would or should sound better. I mean, it's almost like the Paradigm sub didn't need any acoustic treatment. The bass was tight, tight, tight.
I can only imagine what it would sound like in a properly treated room. This also is no exaggeration on my part. I mean, we're talking about a ported sub vs a sealed sub. But the results were much better. All this tells me is that perhaps the MFW-15 was boomy to begin with regardless of the rooms acoustics. Especially when the Paradigm sub25 sounded crisper, cleaner and more articulate without any bass trapping in a relatively small room.