This is the Tweeter I’m using.
http://www.parts-express.com/aurum-cantus-g2si-ribbon-tweeter--276-400
Aurum Cantus G2Si Ribbon Tweeter
Highlights
- High 96 dB sensitivity is great for efficient designs
- Excellent high-frequency extension, can be used as a supertweeter
- Extremely fast transient response allows reproduction of the finest details
- Smooth and effecient frequency response from 1,700 to over 20,000 Hz