This time I’ve measured the ScanSpeak “top of the line” D3004/664000 tweeter, which uses a 1” dome made of 99% Beryllium.
This is an exotic and very expensive tweeter, but it’s also one of the best measuring dome tweeters I’ve had on my workbench.
It will be very interesting to see if the sonic performance is as good as the measurements. 🙂
For further details see: ScanSpeak D3004/664000