Cube Audio Nenuphar Single Driver Speaker (10 inch) TQWT Enclosure

Yes indeed, David.

I emailed Jon at Refined Audio and he said that the driver upgrade would require sending him original drivers and his replacing “the cones” for a price of “roughly $1500”.  I think this is a fair deal from Cube Audio. 

Assuming of course the new drivers are an easily discernible upgrade. 

@stephendunn  Thanks. That's super helpful.

Did Jon give you a feel for turnaround time?

Yes, David, he said 1.5 to 2 weeks and that he would post about the whole process on his website once he knew more.

This is going to present another possible upgrade opportunity: to replace hook up wire while driver is being upgraded.  Wire is apparently connected to drivers via banana plugs which should make replacement a little easier.  But of course how would one determine how much of the upgrade was due to new hookup wire or new "cones"?  At any rate I'm holding my horses until Srajan weighs in.  Also, sent him an email to remind him there are a bunch of us Nen owners eagerly awaiting his verdict on the new drivers and thanking him for his review of the IFI pro iDSD Signature which arrives today for a 60 day home trial via Music Direct.