I have a lovey pair of (not coconuts) Genelec 8010 monitors delivered today and my trusty Boss BR800 however I’m struggling to get any sound output. I have some XLR connectors which is all I can use on the Genelecs yet there is no sound coming out. They crackle initially when everything is turned on so I know they are working. What am I doing wrong? My old Rokits had different line in/out connectors and worked fine.