VPI Classic - Now you have one......

Actusreus...i plugged in the specs for your Aida cart (6.8g cart mass and 22 cart compliance) with the JMW10.5SE tonearm mass of 12.3g and you get a resonant frequency of 7.76Hz which is right below the 8-12Hz recommended region. As per VPI website the ideal combination for the Classic's 10.5SE tonearm are carts with mass in the 7-11 grams range and compliance in the 11-16 range. The Delos @ 7.3g and compliance of 12 would fit very nicely with the 10.5SE tonearm, yielding a resonant frequency of 10.37Hz. Good luck and let us know how you are making out.

Thank you Cmalak for your feedback. I actually contacted VPI a while back and Mike told me the effective mass of the JMW-10i SE is 11.2 grams. But then it seems that others were told the mass is anywhere from 11.6 to 12.3 grams so go figure. With an effective mass of 11.2, the resonant frequency I get is 7.9 so it's not completely bad, but doubtless the Delos would be a better match.
I'll keep you guys posted on my impressions and progress.

Actusreus...I hear you. As you say there has been a range of estimates. Maybe it's because some people have put the traditional 10.5i (with Valhalla wiring and VTA tower) on their Classic (I am assuming this is the 12.3grams) and others have put the 10.5SE (which is the tonearm that comes standard with the Classic without the VTA tower and Valhalla wiring). It's kind of frustrating that VPI does not put the specs on their website for their products. Just as a clarification, so you wired the 10.5SE tonearm with Valhalla wiring but did not get the VTA tower? Is that correct? If so, can you tell us what the upcharge was for the Valhalla wiring? Thx and looking forward to your impressions once you have the table up and running and all is settled in. Congrats.

That's correct Cmalak. I got the Valhalla wiring but not the VTA tower. The Valhalla option was $300 extra, but my dealer said unequivocally it was absolutely worth it and I trust his judgment. The Classic that was set up at the store also had some sort of a felt mat on the platter, which I found interesting as I know HW normally advises against any mats for VPI tables; I've never felt the need to use my Boston carbon Mat-1 with my Scout, that's for sure. I wonder if that's because of the aluminum platter. I will certainly experiment with the mat and will let you know what I find.

I think the arm mass on 10.5i is rather confusing since there are 2 versions of the arm. There used to be a lighter version then there is a steel arm wand version which is slightly heavier. I think the heavier arm is now the standard arm but the earlier units, steel arm is an option. So I am not sure if 12.3 g is the heavier arm or 11.6g is the heavier arm? I am waiting for the VTA on the fly kit as my local dealer can retrofit it easily enough. I assume that VTA tower should not really affect the effective weight.