Question on Output Music Hall MMF-5 / Sumiko Pre

I have recently gotten back in to Analog for fun and on a budget and it has been great. However, on a couple of records I have been listening to my woofers will start to flap forward in long strides yet I hear nothing. They are moving so violently fast and with long strides it is flat out scary looking.

Is this due to a lack of a subsonic filter in the phono pre? Am I going to damage my speakers. It is just wierd.. I have never experienced this with any other source. My system is below and I would truly appreciate any feedback.

Thanks

Chris

Electrocompaniet ECI-3
Tyler Acoustics Taylo Reference Monitors
Music Hall MMF-5
Sumiko Phono box
AQ Diamond Back from Sumiko to my Int. Amp.