Turntables are indeed mechanical vibration detectors. How and where they are set up can definitely impact how they sound. Glad you were able to make the siting work.When I first setup my turntable it was on top of a pine chest of drawers in close proximity to one of the speakers.
The chest functioned as a very effective sound box, resonating in the bass frequencies. I was possible to hear them ringing after tapping the chest.
Solved pretty effectively by an offcut from a solid oak door sized to cover the top of hte chest. Damping material (car sound proofing) between it and the chest. Then a pad of the same damping material between each foot of the turntable and the oak.
I’m fortunate in having a decades-old heavy MDF “stereo cabinet” upon which I can place my turntable on top. Weighted with components, it serves as a very good vibration control device but falls short of my spouse’s expectation of interior decoration.