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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
tenmus OP
49 posts
 
Hi Doug

Thank you for all the infos.

Could you just tell me if I' m not wrong:

The ideal impedance for the SUT with both AIRY 3 and UNIverse is 6,6 ohm with 0,24 output version ?

(Would it be 13,2 ohm with the 0,48 mV version?)

How is it possible to adjust so precisely the impedance on the SUT ?

Many thanks

André
tenmus OP
49 posts
 
Hi Raul and Doug

One Friend of mine who owns a T3 F Goldmund and a Goldmund Reference TT tells me that with LINEAR tonearm the cartridge can last five times more than with a pivoted tone arm ; is it true ?

Sonically did you hear the differences between a good linear and a good pivoted tonearm?

André
dougdeacon
3,338 posts
 
The ideal impedance for the SUT with both AIRY 3 and UNIverse is 6,6 ohm with 0,24 output version ?
I meant to write 66 ohms, but that is in MY system. LOMC's are so sensitive to impedance when using an SUT that no one can predict the ideal value for a cartridge in YOUR system. Experimentation is the only way.

(Would it be 13,2 ohm with the 0,48 mV version?)
132 ohms, as above x 2, subject to the warning about different systems.

How is it possible to adjust so precisely the impedance on the SUT ?
By putting a pair of resistors on each terminal. Using resistors in parallel allows for much finer adjustments.

Doug

P.S. I haven't heard a top linear arm, so no comment. It does make theoretical sense that a cartrdige should last longer, provided alignment is perfect. 5x longer? Who knows?
thomasheisig
568 posts
 
I think, it is difficult to say, this or that Arm Design is definite. The Linear Arms improved the last years, specially with the Kuzma Air Line, but there still is some side force into the needle bearing, in my opinion more than with a good Arm like Graham ( just for example ). I think, the cartridges do not last longer in a linear Arm, only when it is very low in weight it is possible. The strenghts and weaks for every design are still valid. A friend uses a - light - Zyx in such an Arm and I think, that's the best compromise.
tenmus OP
49 posts
 
Dear DOUG

My SUT is actually an Audio Note ANS2 with two positions :

20 ohms and 80 ohms

Considering only the technical facts could you tell me wich output voltage would match the best with my actual SUT if I CHOOSE AN AIRY 3 X SB.

Considering musical facts is the difference between the 2 versions very important.

Thanks
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