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Heavy cart on Technics GR

I’ve had this issue since I bought the cart but now I’m determined to get it set right.

I’m running a Phasemation PP-500 on Phasemation’s top end shell on a Technics SL1200GR (early version). 

when I go to level the arm, even with the heavy aux weight it still doesn’t float. The cart end seems too heavy for the counter and aux weight to float the arm. So I set them all the way back to be as close I can guess to be, but then when I zero the knob and then the knob and weight to 2 grams it’s o my .25 grams according to my scale.

I'm told these carts have been used by Technics at shows so clearly im not doing something right. Sounds good to me but I want to make sure im not mashing the cantilever and suspension.

gochurchgo
gochurchgo OP
946 posts
 

@lewm  I can only answer that there is a calculator on KAB’s site for the heavier aux weights. The formula given is SS follows:

“Heavy cartridges like Ortofon SPU require a more substantial Aux weight to use them in the 1200 Tonearm. 
To determine the weight you need, use this formula:
(Cartridge weight + Headshell weight) ÷ 0.2 - 100.
Ex, 30 ÷ 0.20 - 100 = 50. This should achieve balance with the main counterweight set all the way back. Giving you about 4 grams of forward adjustment. From that point to move the weight forward, the ratio is 3.5 to 1. So to move the counterwieght 1 gram you must add 3.5 grams more and so on.”

johnss
680 posts
 

@gochurchgo , if you are going to order the extra weights from KAB would suggest you order the 8 dollar arm dampener and damping trough. Both very worthwhile improvements on the G. 

gochurchgo OP
946 posts
 

@johnss I will look into it

drrsutliff
933 posts
 

@gochurchgo The technics arm is reviewed to be good and an upgrade would possibly require an arm board insert for a swap.  Origin Live has one, I believe, and their many levels of arms perform very well.  

gochurchgo OP
946 posts
 

@drrsutliff  I agree. I am looking at either a 9” Glanz or FR64. I have an Armboard for  the Glanz. Mist likely I would go that route but also looking at Soraine, FR and possibly a Reed if one in my price range appeared.

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