![sme tonearm connector sme tonearm connector](https://i.etsystatic.com/15677609/r/il/ef962e/1392946051/il_570xN.1392946051_gwad.jpg)
Some of them are quite low output ones as you can see, so noiseless input is needed. Benz Glider, Denon DL-103S, Stanton 881S, Entre EC1, Acutex M320-III, Ortofon MC30Super. I will prefer now this "balanced" wiring with ability to separate signal ground from chassis (screen) ground as I am building now vintage test bed to try the following up the date and vintage cartridges I have. it is not ideal for Ortofon MC30 Super requiring 10 ohm load, but is shall be OK now. Internal wiring of SME was less than 20pF but DCR was 1 ohms/conductor. This is still a bit high as recommendations for MM capacitive loading do vary from 150-300 pF Ortofon, 275pF Stanton, 200-500pF Shure V15. I suppose that this is the figure that cartridge will see in parallel to phono input. Now I measured capacitance from positive feed to negative feed tied to common screen and capacitance was 330p.
SME TONEARM CONNECTOR ARCHIVE
as I paralleled 2 conductors to archive lower resistance, it seems that this increased capacitance to two other paralleled conductors and common screen. I really do not understand does cartridge only see capacitance between signal conductors or do capacitance against chassis ground also load cartridge. but if MM cartridge will see both capacitance´s in parallel. When using MC:s this should not be any problem. but capacitance between ea signal conductor and chassis ground is 300pF.
![sme tonearm connector sme tonearm connector](https://static.wixstatic.com/media/2446d1_687ca526f80441d3a1f2528ef06c2b6c~mv2.jpg)
However separating audio ground from signal ground created situation where capacitance between signal conductors is 220pF. This way I can ground tonearm and conductor shields to preamp chassis ground or turntable chassis, whichever proves to be better alternative. I connected shields of both channels and tonearm ground lead to 4-pin connector tonearm ground lug. I ran balanced feed from cartridge to output RCA:s without connecting them to shield. I used 4 conductor shielded cable for rewire and connected 2 wires in parallel to reduce resistance. I got 4-pin inline connector open with help of oven heat and rewired it.