Bestbang4thebuck stated:

"If I send a 16Hz signal to the 'small cube', the active radiator shows a greatly reduced extension, but the passive radiator is moving quite well - I don't directly hear the sound, but stuff in the room vibrates and, depending on how I'm standing, my blue jeans (pants, not cables) 'wobble' on my legs".

Is that what would be considered "visceral impact" or "slam"? What creates this? The ports or Radiators? Or is it the low frequency? If it is the ports or radiators, then would it be correct to assume that a sealed sub would not.