Kef vented tweeter

Hey @mapman

AMT's are inherently dipoles. You can get them without a rear chamber. I'm actually a little surprised I never saw the late Dr. Linkwitz rely on them for his speaker kits.

Best,
E

Polk Audio in the late 70's vented the Peerless tweeter they used in those decades..same rationale..Days of Furure Past all over again..Tom

Erik, curious about your Heil AMT comment.  I have been listening to Heils since 1974.  AMT4's were my first encounter.  Several Large Heils were bought and sold,and also the newwer thinner 4's.  Gave away a pair of ring Heils in a modded Pioner CS33 along with new MTX woofers and a Radio Shack 2 way xover.  The Heils  just don't  interface with my Magnepan MMGs nor the ML Claritys.  Your thoughts please?   Thank you.

Jerry

Kef has come a long way with that tweeter! my R105/3 tweeter wasn't much bigger than a bottle cap with a pole to accept the mounting screw attached to the center of the back of it and the spl and resolution it was capable of was really impressive, the progress since then has really been to managed the sibilance from the early design. 

Hi Jerry,
I'd have to know a lot more about how you designed the crossovers. DIYaudio's multi-way forum is a better place for that.

As single drivers, I will put up the top of the line AMT's with the best drivers from anywhere else. Smooth, amazing dynamic range and low distortion, not to mention power handling and lack of stored energy. The best are some of the best drivers you can buy.

But, integrating with panel speakers is another matter. You have to match the crossover, phase and dispersion. Trying to use a single drover AMT with a line or panel is going to be very difficult. A better match up would be a line of AMT's , similar in concept to the Infinity RS series.


When I mentioned Linkwitz, he did not do line arrays, but multi-way dipoles. I think in that case a good AMT might have been better than 2 domes.

Best,
E