Do you remember the movie gimmick during the 70's called, "SenSurround." The movie "Earthquake" started it.

Question

Answer 1

No I can´t remember it.

Answer 2

I saw "Earthquake" at a theater that had the SenSurround speakers installed.  The speakers gave off a loud vibration during the two earthquake scenes.  SenSurround was a short-lived gimmick.