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oxric wrote:

As to why people are interested in the 16 ohms drivers, that is only true of some. The idea is that if the Vitavox S2s are being used, and a single amplifier to drive the different channels, it seems to make sense to go for 16 Ohms drivers.

I see, that is right. Still, I would like to point out that if the 16 ohms drivers not available and the system is driver from a single amps then it is perfectly fine to drive MF and Fane from different taps of output transformer. A note that I would like to make – the 16R Fane will require more power than 8R Fane. If somebody use low power SET of 1-3W then they need to be concern that that they might not have power to drive 16 ohms Fane. It is very difficult to estimate without knowing many other variables. In case of a single amp is used I prefers to have as high impedance of upperbass as possible in order to idle amp in upperbass. The very much unloaded tube has no power but has very desirable transients for upperbass. For the paper-based upperbass it is in particularly beneficial. Since the upperbass will not care any upper frequency tones then it is practically impossible to make the upperbass to fracture sound in the way how MF would do with super-idle load. If you use 6C33C then try to load this tube to 2K-2.5K MF channel.  You will have so expedited Sound with so much harmonics extern then it will be too hard to listen.

With super idling in upperbass it seems that he eject not as bad, even though the upperbass might become too fast. For the people who do not know what loading type the will implement is imposable to guess what they will end up. If we have non-modifiable output transformers then the Fane’s voice coils need to be from 0.5R to 80R. For sure no one would do it. I would go with 16R and the only reason is that it is very simple to drop driver impedance if you need to by shunting the voice coil with a resistor. It has in most cases not to damaging effect. To increase impedance of a driver is much more complicated and imposable without damaging of sound.

BTW, I was not kidding about the dual-concentric 8” Fane. They did make a version of Studio 8M with a tweeter in the middle. I have it sitting in my driver storage…

Another BTW: the tractrix curve was not introduced by Brits but by French in 16 century after they study fish moving in water.

The Cat

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