Whizzer cone drivers

Single driver for the widest frequency range.

I hate even seeing them. Though they can balance out a driver, I feel that the driver was inadequate, to begin with. You are trying to get something out of a speaker than what the cone sans the Whizzer can produce. It is a cheap bridge from say having a single-driver system, compared to a two or three-driver system. I have a meter that graphically shows me a graph including the immediate frequency and the sustained fall-off. You can get an app for your celliophone that shows you a similar representation, 'Decibel X'. I have the ability to take an individual speaker out of the circuit and see what is left. and yes there are tones made by the larger speakers that MIGHT in some ways fill in the upper tones, but I build crossovers with the intention of taking those frequencies OUT and leaving it up to the next higher-frequency speaker to take over. If you don't like what a bookshelf speaker sounds like you have the option of getting a stand-mounted or floor-standing speaker, to begin with.

@esarhaddon 100% first post which i wainting . Whizzer cone came from audio pro and , no matter size and brand this is cheap alternative good tweeters . i know some desagree and say -we listen ther , we listen , we liten and sound very good

The Lowther Shout of Zu Cubes was nothing but ear piercing for me.

There is not one driver or speaker that is for everyone, so I have no problem with someone not liking whizzer cone speakers.  I have heard, a liked, a small number of speakers employing such drivers so I don't rule them out categorically.  Have you heard the Voxativ Ampeggio speaker or any speaker employing Voxativ full-range drivers?  Have you heard the AER full-range drivers?  I've heard several systems employing Voxativ full-range drivers, in both single driver and multi-way systems, and some systems were very good.  Some were not to my taste, but, that is par for the course with ANY driver.  

I wish the better drivers were cheap.  Clearly builders are not using these drivers just to avoid the cost of a good tweeter.  The top Voxativ field coil speaker is $70,000 a pair (I have not heard this driver) and the top AER driver is in the same price range.  I suppose this is "cheap" if the alternative is using something like the top G.I.P. field coil tweeter in a multi-way system ($60,000 a pair); I've heard that tweeter and it is good, but it is not THAT good.