HELP Please what`s going on with this CARTRIDGE

I had the same problem on my Linn with a Grado , and switched to a Shure V15VXMR and all is well but consult your tonearm manufacturer to find out what type of cartridge works best.

Your description suggests that there is a resonance problem between the tonearm and the new cartridge. If the resonance point of the cartridge/tonearm combination, which is a function of the tonearm's mass and the cartridge's compliance, is too high (typically in the 11-12 Hz range), then the tonearm can begin vibrating (similar to oscillation) so severely that the tonearm / cartridge can actually bounce clear of the groove. If you have a test LP with a resonance mode band, you should use it to check if your tonearm / cartridge combo to determine if it has a pronounced resonanance mode. If so, you will probably have to get a different cartridge (one with either higher or lower compliance) that works with your tonearm.

It's the compliance of your cartridge and the mass of the tonearm that it is mounted to that is causing your problem.
It seems like a not so perfect match. here is a link for futher review:

http://www.gcaudio.com/resources/howtos/tonearmcartridge.html

Rich

A bit of woofer excursion is normal on vinyl. Too much is not necessarily good or normal. Generally, too much can mean improper tracking. The other possibility is the output of the cartridge. Which cartridge? What is the output? Is the record you are playing warped? What is the rest of your equipment?

If you want to call me or me to call you, I would be happy to help. Email me your number and I can call anytime.