If you download a copy of the A8 manual from the Smyth website, check the "Delay" section on page 56 of the manual and page 57 about "Proximity".
Here's what Lorr wrote about the subject:
That doesn't seem to make sense to me because you could certainly be measuring a room where all the speakers are not equidistant from your listening position. I always thought that the Realiser would replicate the exact distance of each speaker, but apparently not.
Fortunately you can adjust the distance of each speaker by adjusting the Delay on each channel independently on each preset. I have not tried it, but in theory you could "move" the speakers to match closer to your room size.
I need to correct the information I posted before. I was actually mistaken about when the Realiser adjusts the delays to put all the speakers equidistant from the listening/measurement position. I had quoted Lorr out of context too.
Here's what Lorr had to say about it:
The only time the Realiser normalizes the delays and levels is when you are assembling a multichannel virtual system from two speakers. In this case it is often necessary, having turned around, to move closer to the surrounds and/or side speakers in order to get the angles correct. Here the Realiser assumes that the intention is for equidistance in the virtual world so the Realiser makes that adjustment. It is essential to get the angles correct for the correct pinna filters, which cannot be corrected, whereas level and delay can be normalized.
That all makes a lot more sense to me now. Sorry about the misinformation before.