i got an x mr with navi. after 37 volume if the song is decently loud, my audio cuts off. but i see the music still going on the navi. any one know why? possible blown speakers?

 

bump?

 

maybe your amp going/gone bad

 

If you perform a search on the Rockford Fosgate amp, you'll find it's quite a POS. Mine starts to reduce volume at around 26 (27-28 on songs with lower volume) so I can't believe you got it all the way up to 37!
I'm currently in the process of finding an aftermarket amp to replace mine.
Best of luck!