iMac speaker problem
internal speakers not listed on 2014 27 inch iMac
iMac 27″, macOS 11.7
If you'll look at the technical specifications for the 2014 27-inch iMac, then you'll find that "Stereo speakers" and "Dual microphones" are listed. The speakers fire out the bottom edge of the computer, if I'm not mistaken.
Look for System settings > Sound if you need to address their functions.