If you want an even, linear response, get multiple subs. I would go for the more affordable ported subs from SVS or Arendal. 1723 1v or 1961 1v, or PB-2000 Pro or PB-3000. Get multiples, and get a measurement microphone to find out where they work best. Forget the studio subs from Genelec or Neumann, they don't dig deep and are not a good value for the performance.
I've got the measurement mic on the way. Arendal recommended I get the 1723 1S over the 1V claiming it's response would be more accurate / tight (I guess you would highly debate this) and it's easier to position optimally in a small room due to its size.
My listening position will mostly be a fixed position but I guess I could move on the horizontal plane 1m-1.5m and vertical plane when standing up vs sitting down.
I have a question about distortion in subwoofers. When looking at CEA-2010 it become apparent that subs have a huge a mount of distortion in the low end which is far from ideal in studio use. However, this is a test designed to push the sub to very high SPLs isn't it so it may not be at all representative during normal use. Bigger subs seem to perform better in this test.
Is there a simple way to work out what the distortion levels would be in % at lower listening levels say 85db or 95db?
What are the cleanest subs you've measured?
In the 2V review it's noted to have 'massive mid bass punch' which sounds exactly what i'm looking for. This isn't stated in the 1723 1S & 1V Subwoofer reviews though so perhaps the 2V would be better for me?