Inner groove "Rumble"

Rega tables do not have a ground wire.

Interesting. How do they get rid of the static charge that builds up on the record surface as the spinning vinyl platter "rubs" against the surrounding air molecules? It has to go somewhere otherwise it "sparks" to the nearest path to ground.

Before I realized the ground wire had fallen off, it sounded like a dirty record was playing (background noise) with the occasional "pop" caused by the arc to ground. I nearly tossed out a perfectly fine record thinking it was too contaminated to save.

Is it really rumble? Have you used a test record with various tones to identify your tone arm/ cartridge cantilever's resonant frequency? When my test record plays the resonant frequency, the entire arm/cartridge assembly visibly shakes. Have you moved any furniture or speakers in the room that might have affected the acoustic characteristics? If my speakers are too close to a corner, the bass can get boomy.

Adam, Have you checked your turntable bearing? Now that your rumble is generalized, I am guessing you have either run out of lubrication in your bearing and/or your bearing is worn in some other bad way.

Adam....did you solve?

Dear Adam18: Seems to me as a cartridge suspension or a tonearm bearing problem.

It's dificult to say for sure so all we here can only speculate about.

regards and enjoy the music,
R.

Raul, How can you rule out the most obvious (to me) possibility that the platter bearing is worn or low on lubricant? He most lately said that the rumble is audible at all points across an LP. But he has lost interest, and so therefore have I.