Speakers that can reveal orchestral instruments' positions

If the goal is to get a live concert in your room Ohm Walsh speakers are the ticket. Even with poorer quality and mono recordings and also the setup is relatively easy compared to most.

Yes most good speakers set up well can do it to some extent if it is in the recording to start with but omnidirectional speakers set up well are suited for it best due to the more lifelike sound dispersion pattern with omnis.

The best Example I have ever heard was with Mbl 111 speakers at old now defunct United Home Audio showroom in Annapolis Junction MD several years back. The showroom design and system setup was very optimized for the Omni mbls with a good 10’ or more of tapered and treated room space behind the speakers.

Using a high quality master reel to reel tape as a source you could identify player locations in that area from front to back and side to side exactly as if they were set up in that space behind the speakers.  Nothing else I have ever heard comes close. 

Same setup later at a local show: not so much.

My Ohm Walsh pseudo-Omni speakers at home do a good job with this but not nearly to the extent of that mbl setup which was the best I have ever heard at that by a very wide margin. Ohm Walsh are designed to allow placement fairly close to walls which fits most people’s needs better.