Near field speaker setup

Hello!

I bought some LS-50 speakers and have them setup very close to my work table. The distance is about 5 1/2 feet apart tweeter to tweeter, around 3 1/2 feet - ear level with tweeters and I'm about 3 1/2 feet away, toe in 12 degrees.

What I want to know is, why does it sound so good this close? I hear a soundstage with the singer for example right in the middle, very detailed and instruments scattered around that sound spacious and detailed. I play at pretty low levels, maybe thats the key. If I move the speakers farther apart or move further away the effect I described fades. If anyone has a constructive comments on how to make it even better or confirm what Im hearing. Im just surprised how close I am.
I plan on trying a lot of different combinations, being stuck at home these days!

thanks for any feedback.

-Richard