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

I bet the new $6K NAT Audio Single Integrated amp..{the best} would be the perfect match for Cube Audio speakers. Audio Heaven !

Hi rwpollock,

I tend to agree with charles 1 dad about some trade offs when changing hifi components.

If it is any help, I recently changed from monoblock amplifiers using EL34 (Gold Lion KT77 output tubes) which I owned fror 24 years. No - Í certainly don't change my hifi very often !

I changed to a pair of Melody 300B-1 monblocks and quickly rolled the Shuagang tubes to Mullard 5AR4 (rectifiers) Sylvania 6SN7GTB (driver/input tubes) and Emission Labs 300B-XLS (output tubes) and this made a big difference to the final sound quality. Even the change of rectifier tube added more "body" to the sound with each tube change providing an improvement in sound quality. This exercise in tube rolling cost around A$2,000, but I definitely think it was worth the investment.

The 300B SET monblocks were definitely a step up from my original EL34 amps in all respects of sound quality. I understand that the EL84 gives a similar sound to the EL34, but different circuit designs and component qualities makes any comparisions difficult.

I was extremely lucky to get an in-home demo on my Nenuphar Minis for two weeks (thanks Craig @ Audioheaven*, Melbourne) before I finally replaced my Sonus Faber Grand Pianos (the original version) of 25 years.

[Thanks rick2000 - you reminded me to give Audioheaven a plug for their excellent customer service].

Unfortunately, in the world of hifi, a home demo with your equipment, in a controlled environment, with enough time to assess what you like,  is the only way to be certain if your are really upgrading, going sideways "going in another direction" or even going backward in your new hifi purchase.

we've a little update for you on the F10 Select and Jazzon speakers. We've done some more experiments and since we haven't started shipping the units yet, we'll be making a change to the F10 Select drivers. After some more testing and prototyping, we decided to go the foam surround on the F10 Select drivers as well. Not only does it have a little more efficiency, but it also has a very nice, richer midrange than before. It's definitely an improvement, so we'll be switching to the new design from now on.

Next week we'll update the site with more information and measurement

I just received these information from Cube email.

s..

After some more testing and prototyping, we decided to go the foam surround on the F10 Select drivers as well. Not only does it have a little more efficiency, but it also has a very nice, richer midrange than before. It's definitely an improvement, so we'll be switching to the new design from now on.

Improved efficiency  and improving the critically vital midrange region? How do  you not appreciate and welcome that?  The folks at Cube Audio definitely burn the midnight oil it certainly seems. 

Charles 

@onsionsi Thank you for posting this important and helpful information regarding the F10 Select driver for Cube Audio's Jazzon speaker.