lost function of all speakers except tweeters on 1998 BMW 740iL

what do i need to check? all fuses are ok and other functions of the radio.

Asked by for the 1998 BMW 740iL
It sounds like a part of your radio speaker output went away. If it was just 1 speaker, then it would be that speaker or circuit, but all but the tweeters sounds like it could be in the radio. I would check every fuse, but I doubt it is a fuse issue. Usually the radio has 1-2 fuses. 1 for memory, presets and the clock and one for power.
thanks! i will double check the fuses and will go from there. i do appreciate the help.