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Speakers "pumping" with record warps - normal?

I just set up my Technics SL-3200 with an AT440MLa cartridge, Sumiko headshell, and Herbies mat. The table is properly isolated on a Target shelf that is mounted to wall studs. Using the Hi-Fi News test record, I determined that the resonant fequencies of the tone arm are approximate 8Hz (vertical) and 7Hz (lateral).
I've noticed that on warped records, the speaker cones do a lot of low-frequency pumping (visible movement in and out). I'm afraid that I could damage the drivers if I turn up the volume. Is this a normal consequence of warped records, or do I have a resonance problem with my TT?
Thanks,
Mika
mwaller

Showing 1 response by rauliruegas

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rauliruegas
12,820 posts
 
Dear Mika: I think that it because of the same trouble that you already posted where I give my advise:

http://forum.audiogon.com/cgi-bin/fr.pl?eanlg&1208189480&read&3&4&

The Ablang post is a good one tp check about.

Regards and enjoy the music.
Raul.
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