No, it’s not very clear. But I’ll give it a shot anyway, driving in the dark with no equipment model numbers or links to manuals.
If the controller has RCA outputs and the speakers have RCA inputs, it should work fine. Perhaps you are sending too hot a signal from the controller to the speakers and you’re clipping their inputs. Try turning down the output level on the controller, and increase the gain on the speakers, assuming they have that provision.
Regards,
Wayne A. Pflughaupt