Thiel Owners

As a Thiel 3.6 owner for over 25 years, I'm considering replacing them with either the 3.7 or 7.2. Found a pair of CS7's that were converted to the 7.2 but the cement baffle has a horizontal crack from each  side of the midrange to the edge. Is this a serious problem with respect to transporting them? Assuming they remain unchanged after transport, is the sound affected?

Any input appreciated. Thanks.

I have a pair of 3.6's that are now 25 years old (nothing I heard in all this time makes me want to retire them) and I am concerned about old age issues. Have any of you had problems with the drivers?  I am wondering if it is a good idea to take apart the tweeters and clean out and replace the ferrofluid. Or better yet, does anyone sell the rebuild guts?

Thanks

tomthiel:
Do the screws to the passive radiators of the 3.6’s need to be tight? I checked all the screws to the midrange and tweeter (a couple needed a 1/16 of a turn or so) but the radiator screws had quite a bit of play. Just wondering if they are for position adjustment or for coupling to the baffle.
Thanks,