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Proper cable to join RCA to XLR balanced, help needed

I tried the monoprice cable ("right one") and the cordial cable ("wrong" according here). Both have the same noise and hum in my setting, there was unfortunately no improvement.
 
I tried the monoprice cable ("right one") and the cordial cable ("wrong" according here). Both have the same noise and hum in my setting, there was unfortunately no improvement.
What is the right one do you have a link?
 
Answering to my own post, I found the solution to my problem with the 2 wired cable and tweaking the settings of the monitors.

I tried +6 dB (minimum gain) in the Genelec 8030C, tonality was altered. Even 0 dB sounded also altered but less, so I let by default setting (-6 dBu that’s it 106 dB @ 1V) and remembered WiiM Ultra has different voltage outputs. At -6 dB sensitivity I was using 18/100 of the volume, according to the specs of Genelec it reach the maximum at -2 dBu so 615 mV were needed: adjusting to 800 mV then sounded great!

It has also 500 mV and 200 mV but with 800 apparently I cover full range and let some headroom dBFS to EQ

106 dB @ 1Vrms is an insane amount of gain… WiiM claims no loose in accuracy at low volumes but IMO is not true, on the other side Genelec “prevents” in some way to reducing gain in their monitors but at the same time advice to using lowest sensitivity that produce distortion at 90% voltage of an audio interface (that’s +4 to +6 dB), but the attenuator color the sound.

At Thomann website many professionals use monitor controllers but the fews I found with “transparent” qualify by comments start from 500€. WiiM Ultra on 800mV is right to me, but Heritage Audio RAM 1000 apparently is a must have in the future…

 
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If the impedance of RCA Signal->XLR2 ≈ RCA GND->XLR1 and XLR1->XLR3 ≈ 2x the above, then it's likely that the construction is as advertised.
Since I have the Monoprice 104777 cables I have measured this out of curiosity (in a rather sloppy fashion I must say, since I had never used a multimeter) and found no difference in these values (the Multimeter indicates "00.3" at 200Ω in all three measurements)
 
Since I have the Monoprice 104777 cables I have measured this out of curiosity (in a rather sloppy fashion I must say, since I had never used a multimeter) and found no difference in these values (the Multimeter indicates "00.3" at 200Ω in all three measurements)
Your multimeter may lack the precision for meaningful measurements in this case.

If you're curious, something like the YR1035/TR1035 would be ideal, though I can fully understand if you cannot justify the cost.

Another, way cheaper way to confirm the cable construction would be to screw off the metal sleeves of the RCA and XLR plugs and inspect which wire colors go where.
 
Another, way cheaper way to confirm the cable construction would be to screw off the metal sleeves of the RCA and XLR plugs and inspect which wire colors go where.
I have opened the rca plug, here are some photos.
In regard to the XLR I took out the screw but could not find a way to take out the carcass and access the connection itself - I gave up cause got afraid of damaging it
 

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I have opened the rca plug, here are some photos.
In regard to the XLR I took out the screw but could not find a way to take out the carcass and access the connection itself - I gave up cause got afraid of damaging it
That looks like coax wiring to me, which in turn would mean that the cable construction cannot be as claimed:
51brE3KiysL._AC_SL1200_.jpg

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Or is that a second, white wire? Hard to tell.
23B45BC5-559E-45D1-B790-71702AA09047.jpeg

If so, then the construction should be as claimed.
 
That looks like coax wiring to me, which in turn would mean that the cable construction cannot be as claimed:
View attachment 425439
Thanks for your answer!
Yes that is indeed a second, white wire - the picture is unfocused. I took one pic from one side (black and silver cable) and from the other side (black and white cable)
 
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