Low Frequency Rumble from TT between songs

No. Some are less than others but they all have it.

I think this is something you will have to live with, with these speakers, but you may be able to reduce it. Is it "groove noise", rather than rumble? All turntables have some of it. Comes with the vinyl medium.

Over ten years, I turned down the groove noise and improved the sound on my VPI HW-19, upgraded mk 2 to 5, ending up with a pyramid arrangement - stone rack, sand box plus air tube plus ceramic cones, beneath the VPI. With the magnetic bearing in the Hanss T30 turntable, no pyramid needed, the feet can rest directly on the shelf, and these problems were greatly reduced.

Since all records have rumble prior to reaching the musical grooves, then it seems to me that you either need to repair the drive mechanism, or get a new turntable. I have a Technics 1200G and don’t detect any audible rumble from the turntable.

For me..I would not add a rumble filter.

It's definitely a low frequency sound wave, not a rumble, not surface or groove noise.  I'm going to try a suspended turntable just to see if that would be a potential solution. I

SPL Phono Pre will eliminate this.