How do i get the 887 to allow my NAD 602 or 6100 cassette to record? they dont have optical output, only the rca. i have connected every which way, tried to record from the 887 tuner and my turntable, never moves the vu meters, and it no record. Is there a complex setup required? My turntable had no problem playing, i don't have a recorded tape to see if it produces sound. As of now, a cassette wont record. PLEASE HELP!!!