I use 8 inch drivers with a whizzer cone, AER BD3s, in my Oris 150 horns. They sound splendid over the range of 200 Hz to 8 kHz which is their pass band in my triamplified fully horn loaded DIY speakers. Horn loaded fifteen inch woofers play the music from 200 Hz down to 25 Hz where their output is identical to that at the 1 kHz reference. Fostex t900a bullet tweeters play above 8 kHz. I swear if the whizzer causes any distortion or other problems it is not audible to me or my audiophile friends.
Whizzer cone drivers
According to my expirience as speaker designer , i am wondering why so many companies still making loudspeakers with wizzer cone drivers and so many guys fall in love with this products choosing small paper cone as a additonal tweeter prefering high quality tweeter made from top quality components.Yes, no crossover ( capacitor) , but still ?