Sure, you can wire it that way. But note that rca has 2 terminals and that XLR has 3 terminals. XLR/XLR has three wires, rca/rca, has 2 wires. The 3rd wire/terminal, becomes obsolete and is shorted out. Q: are you making your own cable? This wiring method negates the advantages of using XLR. The connections will not be balanced and cannot have as long of a run, <25’. Impedance will be higher as well. In this case, neither has an advantage over the other. Only a balanced terminal at each end, and fully balanced electronics, will give you a balanced circuit. Might as well have rca at each end, it’s probably less expensive cable that will give you the same result. You can look up how to terminate rca to XLR on the Internet.
Bent
