Hi y'all,
Having a bit of a conundrum with my Stax SR-007 Mk1 (S/N 71169) electrostatic earspeaker. As reported in another HC thread of mine (decided to start a new one here because this was getting quite off-topic there), the right driver's inner dust cover somehow got torn and hence some pretty serious mold damage took place inside. As a result, a rather severe channel imbalance ensued. Opening up the driver for cleaning and assessing the extent of the damage revealed that the diaphragm coating got affected.
After having a look at the Japanese Stax repair page (with the help of Google Translate), I learned that
Any international inquiry regarding servicing Stax products must go through the official Stax distributor in one's own country (that was the only piece in English in the whole page, by the way). In other words, my trying to contact Stax directly for a repair quote is a waste of time;
The 007 Mk1 can still be serviced by Stax in Japan (through the aforementioned channels) but with possible substitution of parts. This includes the sound elements, which are replaced by current 007 Mk2 transducers.
Stax won't sell spare / replacement parts directly to individual customers.
Regarding 1., I've contacted Edifier (the current owner of the Stax brand) here in Brazil. After their contacting Stax in Japan, the answer was that Stax won't accept items for repair through Edifier Brazil unless either they were bought from the latter or, at the very least, I have a receipt from the original owner showing the original place of purchase. Unfortunately, I satisfy neither requirement - my 007 Mk1's former owner also got it used. To sum up, Stax simply won't accept my 007 Mk1 for repair at all ๐คฌ
That leaves me with only two alternatives for repairing my 007 Mk1: either (a) try to get a spare / replacement sound element unofficially elsewhere, or (b) try to open up and repair the driver myself.
Regarding (a), HeyNow HiFi in Australia had these for sale until recently, but they no longer seem to have them. I just couldn't find them anywhere else. Which brings me to my main question: does anyone here at HC know where I can find spare / replacement Stax SR-007 sound elements? I wouldn't mind if they're Mk2 drivers, since this is what Stax would do to replace them anyway. Edit (August 10th, 2023): Second-hand drivers are also acceptable if they are in good condition - if I manage to get one, I might just gut it to get the diaphragm so I can try to keep the tuning of the original driver (as far as its internal geometry goes, at least - see also below). That would also keep the cost down...
Regarding (b), in the last couple of months I've been trying to repair the driver myself with the kind and patient remote help of C. Wachara (HC user chinsettawong), to whom I thank once more. To make a long story short, I was able to replace the torn dust cover membrane and the stators only needed cleaning. However, regarding the diaphragm itself I'm currently facing some difficulties I'm not sure I'll be able to solve - that's why I'm also still trying (a). If the diaphragm repair turns out to be successful after all, I'll update this thread with the exact procedure I used since it might be useful to other SR-007 owners. In the near future I intend nonetheless to describe the repair steps that did work out for me, as time allows.
Thank you in advance for any help you may provide.