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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 3 responses by jim2714

jim2714
7 posts
 

I wonder what would happen if you rub a dryer sheet over the rubber mat?

jim2714
7 posts
 

@mitchellco , I'm the one that suggested the dryer sheet. It was clear to me that the rubber mat was holding a static charge. The only question was how to dissipate it. I just pulled the dryer sheet out as one of many possible solutions. I'm glad it worked out.

jim2714
7 posts
 

@lewm If you look up VinylAttack on YT, you will see he has done a number of tests dealing with measuring static build up on vinyl using anti-static brushes and Zerostat guns. The videos may help to understand what is going on.

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