My stereo system has great imaging. How great, you ask?
Well, one time I spilled my drink and I thought would get a cleaning bill from one of the performers.
Ba Da Bump.
But seriously folks...
Try playing Alice Cooper’s, "Blue Turk". It has a large, deep and spacey soundstage with instruments all around the stage front to back. Plus the guitar at the end goes progressively lower typically transitioning from the midrange to the bass driver. See how well your speakers integrate that.
And then play, "School’s Out" just because they played that song on the radio every spring through the 70’s.