Why do my bass drivers shake violently listening to vinyl

sounds to me like there may be a very low frequency feedback loop.  you may not hear it at the distance or volume you are listening.  the structure may be responding and resonating 20 - 30 feet away.  your mechanical pick up on the cartridge, tonearm and turntable may be picking it up and there's the loop.  Streaming has no mechanical pick up so it would not be as likely to create the loop.  if you see long, consistent, excursions of your woofer there's a clue.  It's probably not very good for the surrounds of you woofer especially if it's long excursions.  people don't hear 20hz very well.  it has to be in the 70dB range for most people to even pick it up.  you can almost see very low frequencies better on your woofer since the cycles are slow enough.