pm BrianK, he can fix it for you..ur ccu need repair..mine did the same..ship it to brian and he'll replace all the blow out caps and retrace the lead if needed be..good luck..all nsx, over time, have this problem...very common..next to check is your doors speaker and subwoofer..if it started to crack, buzz or no sound coming from it..then the 3 amps for each speakers are shot...also another common problem..
go here for brian's website:
http://nsxe-repair.com/Repairsrv.html
how to remove:
http://nsxe-repair.com/CCUremoval.html
good luck