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Shelter and Triplanar matching ?

HELLO

I have problems to match a shelter 901 with a tri planar VII.

Lot of records ( above all piano LP ) are playing tremulous and I can see the tonearm CLEARLY SHAKING on the record while playing it as if it could be a problem of resonance between the cartridge and the tonearm .

I have seen here and there that the Shelter was a LOW COMPLIANCE cartridge (I don't know the exact value).Its weight is 9,5 g.

I have choosed the maxi VTF : 2 g.


I am afraid that the TP is too light for the shelter.Its effective mass is 11 g,
Is it enough for the Shelter 901 ?

I am surprised because the Shelter 901 / Tri Planar seemed to be a combination used buy some audiophiles...without modification .

Could someone give me some help...

Thank you

Tenmus
tenmus

Showing 3 responses by dogpile

dogpile
118 posts
 
Hello.

What does the music sound like?

With the information that you provided, an acceptable resonance frequency for this combo is between 9 - 19 with 12 cm/dyne x 10 (-6) being ideal. Find out what the compliance is for the 901 to get an accurate measurement. It could possibly be a mis-match, ie tone-arm too light for the 901 or cartridge compliance too low.

Do check to see if the cartridge is mounted properly (screwed tight) and also check that the VTA screw on the Tri-Planar is tightened.

The ZYX line of cartridges would be a great match for your arm if in fact the Shelter does have a low compliance.
dogpile
118 posts
 
Heed Doug's comments and advice, he knows what he's talking about, always worked for me! Doug's suggestion about adding a second weight will definitely help.

Doug - regarding the above (R) formula, which spec value (C) should one use for the cartridge compliance? The 'vertical' value OR 'lateral' (horizontal) value? I assume the horizontal compliance is "less critical?"
dogpile
118 posts
 

DOUG -

Thanks the detailed explaination and for the (R) formula, it was very helpful.

TENMUS - Tri-Planar supplies an optional "spacer" for their tone-arms. Get in contact with your dealer, maybe he'll throw one in for free!
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