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

I like to know the process too and have been contemplating upgrading, I would love to get a chance to listen and compare v1 and v2 before sending the v1 in, or decide to keep the v1 if v2 sound didn't work out.  I do enjoy the v1 now, although I do like the impressions of the v2 thus far.

I like to add that Jon at Refined Audio and Grzegorz have been very supporting when I reported to them one of my driver have a small dent in the phase plug that I didn't noticed until 6 months into ownership.  Grzegorz were quick to respond and worked with Jon to send a new pair of drivers out, at no cost to me.  I have no doubt that they will take care of their customers.

+1 @khragon 

I haven’t seen any reason to be suspicious of Cube Audio. I had a good experience with them and the distributor when I needed to swap out a driver shortly after receiving the Nenuphars.

just a couple words about that: changing the drivers is easy in principle but it can be tricky to execute. The magnets are very heavy. I found it best if you lay the speaker on its side before beginning surgery. Obviously you want to do that on a soft rug. Once you remove the bolts (ONLY the four outer hex bolts, the inner ones hold the spider together), the driver can slip from its position suddenly. If you’re close to the floor you have more leverage on the driver and a shorter way for it to fall if something bad happens.

Also, the magnets are so powerful that they can easily pull a hex wrench from your fingers when you loosen your grip even just a bit. The wrench will fly directly on to the edges of your whizzer cones with quite a bit of force. The simple answer is a non-magnetic hex wrench (believe its 4mm). I found one for 12 bucks on line and thought it was a small price to pay for the peace of mind.

@jollytinker 

Also, the magnets are so powerful that they can easily pull a hex wrench from your fingers when you loosen your grip even just a bit. The wrench will fly directly on to the edges of your whizzer cones with quite a bit of force. The simple answer is a non-magnetic hex wrench (believe its 4mm). I found one for 12 bucks on line and thought it was a small price to pay for the peace of mind.

This is wise and  worthy advice for sure.  That is some magnet!!!

Charles 

4mm and wise to do it horizontally. Some padding under so not resting on connectors. Stainless steel non magnetic hex is a good idea, thanks jollytinker.