So Weird- No Stylus Contact Woofer Pumping with Hana ML and Elac PPA-2

Nothing that has been offered as solutions seem viable. Static is random, forget about it. The only suggestion that makes some sense is the the possibility on a weight sensor on the table to detect record weight. The Achromat is much lighter than the rubber stock mat on my old SP-15.

Agree @waltroman - but ignoring a solution, how does the static manifest itself into the signal wires?

I would think that both the + and - wires would be elevated equally and in the balanced sense they should then cancel out with the CMRR of a balanced approach.

Weekend results- using a signal generator I input square waves into the phono pre at all three possible inputs, input 1 RCA, input 2 RCA, and input 2 balanced XLR. All three output clean square waves at normal operating frequencies at various amplitudes. I couldn’t trip it up. So I’m eliminating the preamp as a culprit.

I reinstalled the XLR and using the Hi-Fi news test record 300 hz bias test track 6, just for the 300 hz signal, I again got the woofer pumping. The signal rides the rising and falling baseline. With the cartridge lifted but over the record the signal is flat, rising and falling. 

Also I input square waves at the phono cable end and scoped the cartridge end with the cartridge connected- all square with the left and right showing a slight amplitude difference. My next plan is to try to bypass the arm and phono cable wiring with an alternate set up mounted external to the arm to see if the problem repeats.

Somebody asked for a video of the o-scope display

Enjoy

https://youtube.com/shorts/O9GJToBeZAk?feature=share