my subs are making a scratching noise somebody told me they were blown but they are still making bass. what else could it be

 

voice coil out of alignment , soon to be blown .

 

solid connection to the battery? I had a problem similar to this and just had a bad connection.

 

if you physically push on your subs do you hear a scratching noise ?? ... if you do then it is highly posible that your voice coils are rubbing ... in that case be carefull running them ... you can have serius problems (blow amp).