Thiel Owners

Yes, and what real person can hold off on buying an amp for years while having great speakers?

So, I have the new to me CS5's set up (sort of) in my listening room.  Still need to be positioned properly, but I've got to move some gear to make room:).  Regardless, they already sound fantastic.  I am already feeling better about the speakers I'll likely be selling to make room.
There is one issue though.  The top woofer (mass loaded) on one of the speakers makes a flapping (or maybe rubbing) sound at volume.  The same driver on the other speaker is fine.  The surround looks good, so I can only assume that the voice coil is rubbing?  Does anyone know if the CS5 woofers tend to have issues with sagging voice coils or surrounds?  I will probably send the driver off to Rob, but I'm wondering if this is something I should be concerned about with the other five woofers.

esprits4s - mass always tries to sag, and these speakers are about 30 years old. Before incurring expense, I suggest turning all 6 woofers top for bottom. The offending woofer might take some time to re-center in its gap, but it could fix itself.

Thank you Tom! I will give that a try.
-Gary