seventy1 Posted April 29, 2018 Report Share Posted April 29, 2018 Hello, I've decided that I want to learn how to refresh the ferrofluid in my 200029-1 tweeters. I've read that they are not serviceable, but I went ahead and removed one of mine from an AR-91 yesterday and after I found an allen wrench to fit the small screw, one thing led to another. I learned a lot, but have probably botched the coil. I know what I did wrong in the process and I think these can be successfully operated on if you carefully take the right steps. Below are some pictures of what mine look like. The magnet construction is interesting in that there are three prism shaped reliefs machined in the outer diameter. There's a wooden button glued on the top of the pole that looks like the same pieces used on furniture to cover screw holes. I assume this just keeps the dome from being pushed in too far. I haven't been able to find a post or video for repairing these, let me know if I missed something. So, I'd like to develop and publish here a process to disassemble and repair these, but I need another donor part. Does anyone have a dead or dull tweeter that they'd be willing to part with? I'm not looking for freebies, I will pay for shipping and the tweeter. Please let me know if you can help, thanks! Quote Link to comment Share on other sites More sharing options...
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