The rockford tech responded and he also said it seems that there is a problem with the internal crossover.
So I responded, so lets wait!
EDIT: Response (Steve) 10/13/2010 04:10 PM
That is very strange, the built in crossover is already set to LP. Even if you have the crossover set at 60-70Hz you shouldn't hear any voice. Based on the information provided the issue is pointing to a problem with the internal crossover, haven't really seen it before but that is what it is looking like.