Best dual concentric

[walpurgis]

I've heard that wizzer cones can be troublesome in this area - or am I wrong....

They can be. But like all things, it varies. There are some very fine speakers that use a parasitic cone.


Feastrix make beautiful dual cone full range speakers, but only for those with deep pockets. A pair of these will set you back around £40,000 if I recall.