Yeah, I noticed that too. Ha.The first time I heard that on CD, it felt like I was hearing it for the first time. It's so lousy on vinyl. So lousy.
They knew it was going to sound lousy, and admitted as much on the inner sleeve: "This album has a longer running time than most average LP's therefore to achieve maximum effect PLAY THIS ALBUM LOUD."
Unfortunately, cranking up the volume doesn't magically bring back the low end and the all-around fidelity, so it was always kind of unsatisfying, listening to that record.