Can a new Cambridge 540p be so loud?

Cambridge 540p is MM only. It is plug and play only, thanks Markus

Sorry, I'm running through a Mod Squad line drive passive preamp on to Bang & Olufsen Penta 3s. I have done some component isolation and do not think I am having any issues with these. thanks Markus1

I've done some further testing with two other systems and determined that the issue is not the phono preamp. The turntable is picking up some kind of vibration/resonance and that is causing the rumble. Has anyone experienced this and have any suggestions as to how I might eliminate 80/90% of this? The tt itself is suspended inside a walnut box. The box sits on some legs with felt at the bottom. Is it a more mass thing ( this is based on the fact that higher end tt weigh 40+ pounds? Is it a vibration isolation thing? Any advise would be great?

What does this filter do to the rest of the signal? The signal sounds just fine but this rumble just sucks! The way the tt sounds now I can't even listen to it. Would loading the money gun help or is this just a flaw in the tt?

I have this rumble isolated to the idler pulley. I will wait for parts before I mess around with the phono stage. This does not have anything to do with the 540p.