First,  not sure how important this is to you, but "converted" B&O almost always lose value considerably. Original is generally preferred.
Next - the original signal cable is of a decent quality, but the inner cores tend to break apprx 1-2cm upstream from the RCA plugs because the
molded plugs are rubbish.
Cut the plugs off (+ 5cm of the cable) and fit new good quality RCA plugs.

Martin

I agree with Martin.

And don’t forget that the cable’s capacitance is carefully calculated to charge the cartridge optimally.

Your project may therefore alter the sound and lead to disappointment!

Yes, I have considered adding new males, which would be the easy quick fix. And I agree cable capacitance needs attention. I knew full well some folks would recommend replacing the connectors and/or replacing the original cable with a higher quality cable at the PCB.

I still like the option to add sockets using the existing cable internally. I know shorter cables are better, but not always possible. This is where cable length (and capacity) comes into play. I have read about people doing this conversion on Technics tables with great success.

Regarding Capacitance: Can anyone confirm the MMC3 specs are 150pF. I'm a little confused by the Total Load needing to be > 400pF?? seems a little high. Shouldn't my target load be about 120pF?

Looking at the Service Manual, shows the Load Capacity as <400pF. That makes more sense.

Someone got their Pac-Man eating the wrong way :-)

Do the RX2's connect the tonearm wires to the Signal cables with a 6-Pin? or are they sodered to a PCB?

I have yet to crack the case open. Looking at some pics on the Internet, not always reliable.

Found some good info on Capacitance on another Forum.

On average, a MM Cart would have a total load of 400pF.

100pF (Phono Input) + 80pF (Signal Cable) + 20pF (Tonearm Wire) + 200pF (Cartridge) = 400pF.

If the MMC3 is rated at 150pF, then we would want 150pF matching load. Ideally.

Leaving a cable target Capacitance = 30pF. That's really low, but I guess we have +/- 50pF to work with.

I saw a new pic on ebay of the RX2 Plinth, I'm not sure there is space to add RCA's to the back panel, so I may simply replace them as advised. Keep you posted.

After removing the top plate, I quickly realized there is absolutely no space to add RCA females. So I ordered some Furutech connectors for everything. New RCA Males, Ground Spade and AC Plug. Aside from the one bad RCA jack, my power cord had damage from a previous rabbit roommate. Bunnies love to chew on cords. I lost 18" off the power cord. I sleeved the signal and ground cables to provide better cable management. The ends of the sleeving are kept nicely in place by some simple silicone vacuum hose. The whole thing turned out great and no more buzzing from the jacks. The Furutech connectors I got at a great price off eBay. I just had to wait 3 weeks. These connectors are over the top superfluous and the whole project could have costed much less. But I'm happy with the end result.

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Thanks for keeping us posted!