Listen to a song in stereo that you know has a strong center image. If the image is centered, then the Denon is right. If the image is everywhere but centre, the Denon is wrong.

Here is a good song for that if you have Spotify or Tidal. Nancy is dead centre. She's also deep back depending on speaker placement and room acoustics:

https://open.spotify.com/track/2nwCO1PqpvyoFIvq3Vrj8N?si=kA4TlFrzSgihAiQugOMDPQ

House of the Rising Sone
Out in the mid or far field
Dedicated mid-woofers are over-rated