Kef vented tweeter

Not very new. From the B&W nautilus, to the Focal Sopra line, there have been different approaches taken to minimize the opportunity of the radiated back-wave from influencing the sound.

What I like about the KEF, from what little I've seen, is the motor seems to be more substantial than average from this type of design.

For the ultimate in this, try an open back AMT. :)

Best,
E

Yes I can hear a similarity with Focals I have heard. B&W Nautilus is pricey.

What other tweeter designs address this particular issue I wonder? Any similar to KEF with concentric driver design? I like that for coherent sound as well especially when speakers are not far from listening position.

What speakers in similar price range as these KEFs  use "Open back AMT"? I’ve heard Goldenears using folded ribbon tweets...very smooth.

My first good speakers 40+ years ago were Lafayettes with Heil AMTs I coveted at the time. Smooth but could not keep those heils from getting fried regularly way back then.

The more I read the more the Uni-q design in general strikes me as a quite unique winning one.

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