Tannoy 7900 0550 HF Diaphragm

As far as I know, this is brand new, although it's been sitting around for quite a while.  They're not easy to find, especially at this price.  It fits many different Tannoy drivers, mostly 12" and 15".  There is application information available on various web sites.  Also designated 7900 0199 and 3133/3833.

I included a tube of ferrofluid with it, although I don't think there was ferrofluid in the package originally, because there isn't a space for it.  I have seen this same HF diaphragm with a syringe of ferrofluid included in the package, in a spot designed to hold it.  You will have to determine whether or not you need to use it.

DC resistance is 4 ohms, as shown in the pictures.  Impedance is most likely somewhat more than that.  That's about all I know.  Thanks for looking.