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cv wrote:

I couldn't unscrew the top threaded piece myself. Perhaps I was turning it the wrong way?! Any guidance you could give on dismantling the driver would be appreciated.

To take the outer ring is very simple. Uncrew 3 bolt (hex) at the rind, drop a few drop of low viscosity oil in the threads, wait for few hours, then hold the threads with a leaser glove and unscrew it. Any S2 driver hat I tried did dive up … except the one that I am experimenting not with conversion. With this drive to take the outer ring I bought a simple tool in the local shop…

Here are some further observations about the prospect of the S2 redesign.

Looking careful and trying to visualize how the new S2 might look like, behave and to be assembled I release that convert the S2 with electromagnet is juts fraction of the tasks. There are many other aspects that I would like to make available in that new S2 driver. The realty is that with field coil the driver become much more simple and much more manageable. For instance I would like to have an options to slightly modify the compression, change the inner-channel rate from ~180Hz to 385Hz and few other things. It would not be difficult to do but there are many variables with completely unknown consequences. The intellectual logic that I might or not might use while I think about the new driver design has hardly any relation to the sonic results of the driver, or at least I am not familiar with this pattern.  The very good part is that I have already “default” diaphragm, gap and phase plug assembly that that will provide the base sound of the driver.

I am not a bit fan of the thinking that if the driver uses electromagnet that it instantaneously become a good driver, perhaps the reality would be quite opposite practically for HF drivers. I think is I finish this project, (or if I start it) then it will be the driver that will sound “differed” and this difference would not derive only form the fact that the driver would have a field coil. What I am optimistic is to have a driver what I would be able to tune it sound to my demands playing with the magnetic force, the permeability of the core (this is a big question), type and the amplitude of the power supply, compression ratio and few other things. Who know, might be I will be able to tune the drive to something that was not available before, thanks the S2’s cone and the phase plug are a wonderful playground for experiments. Or perhaps with the new S2 design I will be able to manage the craziness of the vintage S2 cone with the metal suspension….

Who know…
The Cat

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