That's frequency extremes. So the high and low ends of the frequency range are rolled off. Also wide stereo in the bass region can cause the needle to jump, so either the bass needs to be reduced in volume or made mono/as-close-to-mono as possible.
"Mastering engineer Bob Ludwig created ultra-loud master of Led Zeppelin II, but his version was pulled when it skipped on a record player owned by Atlantic boss Ahmet Ertegün’s daughter"
Dynamic range is less of a problem.