Subwoofer rumble issue


I’m having a hard time solving a problem that seems to come and go. My subwoofer will rumble uncontrollably when playing records at a higher volume. If I turn the volume down sharply it goes away but when I creep the volume back up it comes back. I’ve tried isolating my turntable as much as possible with diy books, isolation feet, etc. (I don’t want to buy an expensive isolation platform unless that really is the issue.) Any thoughts on what I can do to fix this? Thx!
paulgardner
You lost me. What do you mean, all hell broke loose? Is that a variable phase knob?
A subwoofer on springs? Help, I'm gonna die laughing. That's a joke right? Tell me it is a joke....
A subwoofer on springs? Help, I’m gonna die laughing. That’s a joke right? Tell me it is a joke....
Yeah it’s called the humanless pogo-box. Just GK with his voodoo

Isolate the sub from the rest of the system by putting it on short stiff springs. You know, like Super Stiff Springs. Trademark. Problem solved!
Yeah, they're called valve springs from an auto engine, $1 each from auto wreckers, not $13 each!!!!!
Georgie Porgie and misogyny, are you dudes high or just forget to take your smart pills? 💊 💊