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In the Forum: Audio Discussions
In the Thread: RAAL Dipole Ribbon Tweeter
Post Subject: More dipole tweetersPosted by martinshorn on: 9/25/2017
hi Paul

I was just checking recently. 
My electrostatics work great, they also got excellent radiation in HF as the outer stators are lowpassed, so im using very slim 1 inch stripe (50 inch high) in the center only. Excellent radiation and smooth response up to 35k. 
But, the transformer got the classic capacitive load down to 0.1 Ohm near 20k and kills all amps headroom. 
So i need a tweeter to cross at 5k and it should integrate well. No easy task. 

I found the raal too. Could be nice. I found instructions for DIY Ribbons in the size of Magnepans. Could be even better
Then i found reports saying the alu foil makes noise.  Digging deeper, i think i dont want a ribbon anymore. 

This one is pretty cool too
https://www.madisoundspeakerstore.com/air-motion-transformers-amt/mundorf-amt27d1.1-dipole-air-motion-tweeter-amt/
Would like to know more like that. Pls share @ everyone

Cheers 
Josh

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