Some pictures of the original cable may help. Also what is the size (cross-section) of that XLR connector? For your information there are two sizes of XLR connectors, one is the standard XLR and the other is the mini XLR...

Those are inputs. Depends on which input you want to use. Most common on would be the normal RCA (unbalanced) input from most audio equipment. If your audio equipment have XLR output then simply use the XLR input. There are a few shops that caters/specialises audio equipment interconnects in Jalan Pasar (though make sure you bring sufficient funds). Since this is the KRK Rokit 5, then make sure both sides have the same volume (balance) since there are no master volume (as each speaker is independant)...