Meadowlark Blue Heron - gas tweeter leak problem?

Drivers go bad for many reasons. This particular tweeter was gas filled and had something wrapped around it that looked like it dried up after a while. People beleived that this meant the gas leaked out but that was not always the case. Once they go, there is no way to repair or replace. Contact Medowman on Agon, he knows the speakers very well.

Happy Listening.

Thanks for your reply to my thread re: these tweeters. I just purchased a pair and the surface of the tweeter has a patina of mild wrinking. But the damn things sound better than my previous speakers. I am wondering if I should replace the tweeters or let them be? I don't detect distortion but someone told me the effect of the lost gas would be output volume and as good as they sound the vocals could be more forward than they are. they are good but they blend into the background instruments more than I would prefer. Madisound offers two suggestions if I want to replace.Audax TW025A28 Gold Dome Tweeter https://www.madisound.com/store/product_info.php?manufacturers_id=120&products_id=8484

and the ScanSpeak R2904/7000-05 Ring Radiator
https://www.madisound.com/store/product_info.php?products_id=1580

Would you be so kind as to offer your advice?
stefan

Stefan,
My Blue Heron Audax HD3P tweeters show & have the same problem you are discribing. This gas leak problem was a defect in the design of the HD3P and will eventually lose almost all ouput as the gas escapes. In reality, it was NOT some mysterious gas as legend has it, but merely air.
The good news is, there is a fix! Yes, you read this correctly. My two HD3Ps are currently being modified repaired at Moca Audio (www.moca-audio.com) in Tours, France by an acoustical engineer (Marc-Olivier Chauveau) who specializes in Audax drivers. They are to be shipped back to me next week. The mod-repair attempts to seal off the the leak or leaks as good as possible. He said to me, the repair may last a year or longer, or maybe only a few weeks. The better news is, you can put the air back in yourself, if, and or when it begins to leak, as he attaches some small nozzle type tube on the back of the HD3P. It comes with instructions on how to do this. Unfortunately, you have to remove the tweeter from the speaker to put the air back in. (NOT disconnect the wires) The cost of the repair-mod is 60 Euros for each tweeter. About $75.00US
If this seems like too much trouble, he has developed an extremely modified Audax tweeter (TW025HE01) that is an exact replacment for the HD3P. 200 Euros each. In addition, you would have to replace the existing HD3P crossover with his newly developed crossover, which he claims mimicks the exact characteristics of the HD3P. 45 Euros each.
If you have any questions, I would be happy to answer them if I can. Or better yet, you can email him yourself at mochauveau@moca-audio.com

Best of Luck,

Michael