Turntable Causes Speaker Cones To Excessively Move Rapidly

@audphile1 no, I did not readjust the VTA... I had it at 0.5. but one thing is interesting is that on the rubber mat when I watch the platter turn, the lip does have a slight wave in it... There’s a area where it goes up about 1/8 of an inch... Like a hill. Maybe for about 2 inches in length. It’s not much but I’m wondering if this is why?

Yes that would prevent the record from being coupled to the platter and would cause the vibrations.

I’m just going to add a recent experience, and my amateur suppositions:

it involved a slight warp, combined with very light tracking, combined with mismatching the high compliance cartridge with an arm best for medium compliance cartridges.

I successfully used my Shure V15VxMR cartridge, tracking at 1.0 gm on an SME 3009 II arm. (on a TD124 TT). Wonderful, trouble free for a few years.

I broke the beryllium microwall tube cantilever. Saved the body.

Recently a NOS Stylus came up and I bought it, installed it, mounted it in my JVC Victor UA-7082 Arm. Some Shure’s have the damped brush to help with dust/static/ and warps. Add 0.5 gm if you use it.

At 1.0gm, it mis-tracked. Later, I increased it to 1.17 gm and it played well:

Except, warps.

I think light tracking, combined with a heavier arm, combined with a warp: once you get that heavier arm moving up, with such light tracking force, it raised the stylus enough to allow/cause mistracking..

IOW, you get it balanced, add 1.0 gm TF, it’s not heavy sitting still, until you get it moving up, then it’s greater weight is working against you for a while

I haven’t really played other LP’s with it. I went back to my AT160ML which plays trouble free on that arm at 1.25 gm

OP

Please explain what VTA at 0.5 means?

Perhaps tell us how you set/aligned the overhang and two null points.

IOW, is your cartridge aligned properly.

remember, anti-skate to zero when setting tracking force, then add just a little anti-skate