Axiom Home Page Forums General Discussion Technical Questions Connecting EP500 to line output of receiver.

It's possible to go from an XLR signal source, to a device expecting an RCA input with just a cable. But not from an RCA source to an XLR input.

XLR has two signals on it. One normal, and one electrically inverted. When going from XLR to RCA the inverted signal can be ignored. But from RCA to XLR, you need something to generate the inverted signal--thus the active device.