Turntable Causes Speaker Cones To Excessively Move Rapidly


I have a Technics 1200G turntable, Luxman 595, and I use MM carts. For some reason, when I play my turntable I see my sub woofer cone (REL sub) and my Focal Sopra N1 cones move violently. There is a subsonic filter on it where helps cut down on it. But I am wondering... does anyone else have this issue?

If I didn’t have the subsonic filter would the violent moving of my cones damage my speakers? I ran it for about 2 hours total of turntable music before I noticed. 

Not a issue with my streamer... they stay almost perfectly still. Just with turntable. 

dman777

I did all of the modifications myself after speaking with loads of knowledgeable people. I added the Isoacoustic footers (which did little). I then installed the upgraded tonearm (which did little to help). I then added an isolation table (again didn't help). Changed phono cartridges (A Kiseki to a My Sonic Labs which didn't help). Changed dual subs (From Rel 212SX to Rel #31's which didn't help). It was only when I ordered a new main bearing for the platter and did that installation myself that I realized the motor was actually not tightened down properly. That was the problem all along. A long and expensive journey but now worth it to me in the end because I really enjoy my vinyl music. My belief is that you have something loose within your turntable creating the vibration which carries through your system to the speakers. I hope this can help you.

Took a nap, had an idea:

re-configure your equipment rack to a double wide unit, about 48" high. that is a very nice height for a TT

move the sub far right

move the light fixture to the left end of the wider rack

that moves the left speaker further away from the TT, 

Toe the speakers in, move the listening chair to the new centerline

 

and make a false back, dark color, to hide all those wires

 

https://www.audiogon.com/systems/12369

Hey, big news flash. I thought maybe it could be the rubber mat. I tried plaing a record without the rubber mat and I did not notice any woofer movement!

It is the stock rubber mat that came with the turntable. What are ya'lls thoughts about this, please?

@dman777 did you re-adjust VTA after you removed the rubber mat? 
The only explanation for this is your VTA  was completely off with the mat and now the arm is in a more proper position. 
When you look at the arm with stylus on the record, is the arm parallel to the record? With and without the mat.