thank you both,Kerry an Georg, well, as I said, I am not intending to do it myself, I was just imagining a possibly new idea. Not knowing if it was really new.
Maybe it is because I am french, but there is something I don't understand, Georg, when you talk about the FR4. What is FR4 ? if it is not too long to explain.
yes, I feel like reading the whole thread.
there is also something very interesting for me in what you say here, and it brings a question or more, because I succeeded in repairing several of my stax lambda pro headphones ( I have a recording studio, giving french dubbing for movies lessons and my students are happy to work with these, which I really want them to do, to give them an idea of what quality is, and then, make them feel like making quality in their acting) but, couldn't on some.I started to read on head-fi about it, but couldn't find any thread where people had done what I did to repair them, and how to make it when their is a persisting problem. To explain : My stax ( BTW the lambda pros are far better than the 007 or 009 for monitoring, and my favorite is a (very rare) " spirit lambda pro" for that) had, of course, because they were old, the usual static issue caused by the protective membrane teared off by aging, and, after a while, the "heat" of my head made condensation, microscopic , but important enough to reach the stator and make little short circuits. and then static noises.
I noticed that, because they worked perfectly well when I had not used them for a while, and, after one out two hours, started to make these disturbing static noises. most people say that no one can repair these, because the parts are glued, and then, opening is destroying them. Also, that the smallest dust particles can also give these static problems, and when opening them, dust gets in it and the driver is wasted. Well, I had nothing to loose, indeed, with those among my stax which didn't work well anymore, and I decided to try to mend them by myself. I had tried before to have it done by someone who said he was a specialist, but when I received my headphones back, nothing had changed.
well, I had to find Mylar to replace the damaged one, and a good glue. That is what I did. Opened the driver, not until the membrane that make the sound, but only reaching the protective one, and made it so that a new protective membrane was here and couldn't move. It worked really great, and effectively completely repair 4 lambdas, like that. But for those which had an imbalance, I didn't find a way to mend. And for some, too, I still had static after that (not on the four ones I mentioned, that are definitely repaired) . probably because of dust on the central membrane. dismounted the driver completely, and changed the membrane, which was damaged, with the same Mylar I used for the protection membrane. It worked, but the sound was weak, like I already thought that it would, and I was even surprised to have any sound, because the Mylar I had found was not conductive. Tried, then, to cover the Mylar with a very very thin gold leaf, the kind of gold leaf which is used by painting menders, you know, to fill holes in gold, and platter the frame of paintings with gold. I had that because my mother used that when she was still on earth... but I had no better result. Bought a conductive spray, had no better result. Now, what you say :"you only want the active area of the membrane conductive on the stator." is something new for me. Do you think that it could have worked if I had not made that on the complete membrane ? I have seen other people on head-fi saying that to recoat a membrane, one could use a simple anti static liquid... Would that be true ? I am quite lost now in my mending, for I would like to repair my other stax, and have been stuck for days now at this point. Left a classified to find a lambda with only one driver working, and I just found one form a very nice dutch man and head-fier. Will receive it soon. But I have other stax lambdas to repair, and so, I would like to know how to make a complete repair in any situation. to re-balance unbalanced drivers. To avoid the statics. And to change the membrane.
Maybe all the solutions are on head fi, but not all together in one post and thread, and I think that would help to have it in an easy to find place, with all necessary details.
many people have an old damaged lambda pro, I think. Maybe they would be happy to repair it you don't need too much apparatus and machines, just a cutter, soldering iron, soldering lead, glue, also another kind of glue, which has to be heated to melt to be used ( sorry can't think of the right expression in English) long lasting Mylar, observation and patience.
and the knowledge that I don't have about when the repair cannot by completed with my system.
Does anyone have experience and solutions for that ?
Edited by wppk - 2/8/16 at 12:55pm