Thanks all for the replies.
First, I am not an audiophile.
Second, I can tell the difference between malfunctioning equipment and a lousy mix.
I first knew this music from mono LPs. I heard them in stereo on CD decades later.
I think the producer or engineer made a poor choice on the stereo mix to place the horns center and the rhythm instrument left and right. The horns overwhelm the rhythm section on my copies of the CDs.
That said, I have hardware (and software) that allows me to reduce the center, and using this feature brought the stereo versions to life for me. This is how I will continue to listen to these albums. The bass and piano have much more presence now.