There's a company that makes one of the leading guitar amp\simulators out there, called Kemper. They just released a custom 12" whizzer driver called the Kone that is meant to use their proprietary DSP in the amp to coax near full range response from the driver. I have one for use with their system, and using the DSP and external audio with it set in full range, was frankly shocked at how good it sounded with high quality audio. Far better extension and less tubby mids than a stock Eminence 12LTA.
The driver design is described as having a modified whizzer that allows higher frequency response, but it appears the overall response of the driver is not usable without their DSP correction. It would be interesting to throw a RTA on one of these and see how it does full range. Also it is only available in 4 ohms.
The site shows the Kab (a standard 12" cab with a Kone installed), but you can purchase the Kone driver on its own. It's made by Celestion in China, and is very high quality with a beautiful look.
KEMPER Kabinet & KEMPER Kone | Kemper Amps
The driver design is described as having a modified whizzer that allows higher frequency response, but it appears the overall response of the driver is not usable without their DSP correction. It would be interesting to throw a RTA on one of these and see how it does full range. Also it is only available in 4 ohms.
The site shows the Kab (a standard 12" cab with a Kone installed), but you can purchase the Kone driver on its own. It's made by Celestion in China, and is very high quality with a beautiful look.
KEMPER Kabinet & KEMPER Kone | Kemper Amps