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


I observed the weirdest thing I have ever seen in audio. With the cartridge positioned above the record, tone arm locked up and platter spinning, the woofers were pumping on my system. I googled every permutation of query I could think of but came back with no hits. That’s when I decided to video the problem- link below:

Mystery Woofer Pumping

I could type out all the details but the video pretty much covers everything. I thought ya’ll might be interested in this.

 

mitchellcp

Showing 4 responses by fsonicsmith1

@mitchellcp 

Just for grins-even though you don't want to undertake onerous steps-please try switching the neutral and ground wires at the clips. Should take you less than a minute. I am sure you know this-use your fingernails and not pliers. 

Uh, see my previous post. You can still try it and report back. I suspect the problem goes away when you remove either the record or record and mat because the spinning magnetically charged item (record or mat or both) excites the improperly connected cartridge whereas the aluminum platter does not.

@lewm 

No problem. You are one of my favorite contributors on this Board so I'm glad to have that cleared up.

@lewm 

lewm

11,075 posts

 

fsonic, I don’t know what I said to make you so angry, but you DID write, ..."or degauss the current mat, or put a blocking capacitor somewhere." And this is what led me to believe that you were supposing that a capacitor can block a magnetic field. Even Sherlock Holmes could testify to that fact.

You have me confused with someone else. I did not write that.