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Stanton 680 - Adventures in Retipping + Loading

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    Posted: 10 May 2020 at 6:51pm
Awhile back I decided to get my Stanton 680 retipped. I've tried a Jico stylus on it and while I liked it overall I thought I could do better with a retip job. I won't name the guy that did the work but I'll just say I went through a bit of hassle to get the job done correctly as it wasn't done right the first time. I then had the work verified by a third party. 

So what I ended up with was a cartridge that started life as a Stanton 680EL-mkII-X, but had a nude Ogura 8/70 line contact stylus put on it and a new rubber suspension. The cartridge works well now but I need to work out the loading for it. 

On the original stock cartridge Stanton recommended 275pf for the total capacitance. I recently bought a Technics 1200mk7 and I'm not sure about the capacitance of the internal tonearm wiring. I've emailed Panasonic to try to get this number. I was told on the old 1200s, the internal tonearm wiring (not RCA cables) the capacitance was around 10pf, which is really low.

With my Reflex and the RCA cables I use I'm at ~160pf. If the 10pf spec for the tonearm wiring is correct that's ~170pf total. The inductance of the cartridge is 900mh per Stanton specs. 

Now, I took a crude measurement using the frequency sweep on my CBS STR-100. My results show that there is a 10db dip around 14Khz. I'm wondering if the additional capacitance of 100pf via loading plugs will work that out. 

Reflex M + PSU-1 used with AT VM95ML, Stanton 680mkII + Ogura, and Shure M35X cartridges.
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