Agree with trying Herbies, and you’d probably also benefit from putting the subs on some footers from SVS, Herbies, etc. as they’ll probably improve your subs’ performance in addition to quelling more vibration. Best of luck.
Need help
A little back ground I moved from WV to Texas in WV my system was in a finished basement now it’s on the second floor of our home. My system is Rega RP 3 turntable with the Rega upgrades. Exact cartridge. Rega Apollo CD player Rogue Metis pre amp and a Carver MT 1.0 T MK lll amp. Speakers are a pair of Source Technology 7211’s with two Source Technologies HV/S 10/500 Subwoofers. Now my problem when I play a CD or listen thru head phones everything is fine. But when I use the turntable the subs go crazy vibrate the floor bad I can’t turn up the volume at all. Turntable thru headphones is fine. When playing a CD subs are fine. Just when I play a album. I’m not a fan of CD’s so I’m going crazy. The subs are 7 foot apart and the closest one to a wall is 42”. Thank you in advance for any help ideas of what I can do.