Question for the audio guys here. I have a box built with three RF p2 ten inch subs. Running a audiobahn amp to power them, just so you know. One and only one rattles. It is the sub itself, not the car or box. If I install all the fasteners it starts to rattle, take them out and it stops Kinda at a loss here and my audio guy locally is on vacation this next week. Any ideas as to why? These subs have the removable plastic covering around the magnets too, but it makes no difference if they are on or not.

 

Try different fasteners.

 

could be the tinsel leads hitting the back of the cone.
Or the sub could be bad and the coil is hitting the pole piece.

 

If the holes are there, use zip ties. They won't rattle.