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

I understand that resistance is additive in series. So in one sense there is no possibility where there would be an EM potential difference. However I saw on the o-scope various differences between the left and right channels that increased in amplitude as I lowered the input frequency. I figured all this was reactive- an impedance change. Also it was disappearing in single end- linking the ground fixing the problem, at least as I understand it. I was in the Submarine service and got a nice commendation for recommissioning a failing hovering system, it was a corroded solder joint. That’s how I got to a garbage solder joint as the possible cause. Change wire, add solid connections- problem gone. I figure someone in 2056 will have this trouble and thank me after I’m dead.

Also- you were right about the AC- it was going positive and negative, slowly but plus and minus none the less. Apologies.

Apologies not necessary.  Suffice to say you found a glitch in the wiring and fixing the glitch also cured the woofer pumping.  Is that a fair summation?

I’d say that’s the highlight