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Why the woofer moves badly when playing certain LPs

Hello. First greeting.
My turntable is Pro-Ject The classic, Phono is Lejonklou Gaio2.4 and Cartridge is AT150sa.

However, I am having problems with my woofer moving badly when playing certain LPs.
Generally, this is not the case with the older, dusty LPs of the 80's, but rather with the record just new released LPs.

I want to get help from someone who knows why this is happening.
Sorry for my broken English.
Thank you very much.

starbusters
chakster's avatar
chakster
6,144 posts
 
What’s your speakers ?
Did you ever check phase, polarity etc ? Are you sure everything connected right from the cartridge to the speakers ?


somegeoffguy
31 posts
 
That is crazy! Does your receiver have a rumble filter on it? My old Yamaha R900 had a button for "Sub-Sonic Filter" which was supposed to take care of the really low frequency stuff coming off records. I have not seen this on modern gear though.
-Geoff
starbusters OP
5 posts
 
/ chakster
Speakers are Canton Ergo620
As far as I know, I don’t think there’s any problem with cable connections, the attachment of cartridges, or parallel adjustment. Because there are LPs that are very normal and have great sound like the link below.
https://blog.naver.com/zuropa11/221839468237
heaudio123
689 posts
 
At 0.49 I can see a large gap under the record at the edge. Approximately 1-1.5" of the outside of the record is not touching the platter. The record is warped. That is likely instigating your woofer excursion. If you have a resonance issue in addition as described by atmasphere, above, that will make it worse.
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cleeds
5,947 posts
 
It sure looks to me like a stellar example of pickup arm/phono cartridge mismatch.
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