Ever since I reinstalled my Stax last December, I've not been able to take it out again. I tried it on two systems with three turntables - Thorens 125, Goldmund Studio and Panasonic SP-10. Eventually, I decided to let it stay on the Panny. As I have several other cartridge/tonearm/turntable combinations already set up, I have plenty opportunities for comparison. So far the Stax/Panny combo has certainly gotten played as often as the others.
For some reason, this time around, I found my POD-X quite stable needing hardly any adjustment during listening sessions, long or short. The major gripe I had in the past was an annoying thumping sound through the speakers when records being played are off center or otherwise imperfect. I finally found the culprit. It's related to the VTA. When VTA is "correctly" adjusted, the thumping noise simply vanishes. Of course, the tracking force has to be set at 1gram as specified by the factory for optimum performance.
I'm sorry I don't have any picture or specifics for the Rabco setup. I tried to re-establish contact with my friend who had it done but was informed that he had passed away a few years ago. He was the one who told me that the total capacitance of the Rabco internal wiring and the additional interconnects
had to be exactly right otherwise it wouldn't work, as I eventually found out for myself during my Souther experiment. I wasn't happy with the outcome of Stax/Souther but before I quit fooling with arm swapping for good, I'll give the Versa Dynamics arm a try. Again this requires a suitable adapter for mounting. I will have to get a machinist to do the job for me. If I don't get better performance out of the combination, I'll just have to put up with the UA-7. To be fair, I'm really quite happy with the CPX on the Stax UA-7 with its dedicated arm wand, now that I've solved the major annoyance.
I'm very interested in your friend's proposal of a stable detector/oscillator circuit for this wonderful cartridge. I hope it will eventually happen. I don't know why Stax didn't do somthing similar, but then I heard or read somewhere that the oscillator has to be broadly tuned and x'tal might not be ideal. At present I would gladly just settle for a good low noise tubed voltage amp with 10db gain to replace the stock FET circuit in the POD box.
For those who wish to upgrade the performance of their POD, there is an article in Japanese with schematics and all on the internet. Unfortunately, it's very difficult to make sense out of the machine translated text in English.
I probably have the same hand-written instructions in English provided by Stax. Thanks for the offer. Is your friend looking for just the cartridge or the complete system which includes the cartridge, dedicated tone arm and the Demodulator/Oscillator? I haven't seen them offered on the used market for years.
p.s. How do you like the Ikeda? Which model is it? How does it compare to your Deccas? I'd love to try one of these unusual cantileverless MCs, but do not want to have to give up my right arm for it. I already have a Ikeda designed Jeff Rowland Complement tonearm waiting here just to be used for the purpose.
my final setup for the CP-X for now...