I've had several projects lately that required blending various combinations of VSL, LASS and/or Sable strings as if they played in the same room. I've learned from a prior thread that step 1 is to "center" the sound output before it goes into MIR, keeping as much stereo width as you can. One of the contributors in the prior thread posted a video showing how he does this with Powerpanner and LASS.
I'm posting to add a couple things I've learned about Powerpanner and LASS, and about a similar process with Sable.
Assume for the moment that your sound is a first violin that was recorded off to the left. You would pan the left side of the signal towards the right until the output is equal. Powerpanner does this easily, and the sound actually sounds louder. That is, until you decide where to set the "pan law" which opens at 0db. Since pan law addresses the issue that we perceive things to be louder when panned to the middle than when panned to the side, it seems to me it makes more sense to set this to a similar setting as in whatever DAW you're working with, perhaps -3 db. Once you do that, the sound seems roughly the same in volume.
The first time I tried to do this process with the Sable close mic samples, I got some unexpected imaging and phasing issues. It took awhile to figure out. Sable comes with a "stereo width" setting. It loads from the factory in the center position, but if slid to the far right, produces the greatest stereo width. It turns out that the far right setting invokes an uber-stereo effect in Kontakt that artifically exaggerates the stereo image; and the center position is the setting you want if you just want the two mics panned hard left/right without any further processing. Once Sable is in the center position, you can use Powerpanner the same as with LASS, and you're on your way.
I hope this is helpful.
Large Vienna Library all on SSD, Protools/Carbon on M1 MacBook Pro, OSX Monterey 12.7, Steinway D, Rhodes Mk8-FX, Osmose, Moog One, Trigon 6-DT, OB-X8, Prophet 10 rev4, OB-6-DT, Kawai VPC-1