The DD50000 Everest has always fascinated me. In the development history for the Everest it was mentioned that there was a 4-way prototype.

Do any of you factory insiders have any more information for the prototype?

It would be most interesting to hear about this 4-way Everest that was not to be.

Regards.


Everest Prototype
© Audio & Video Life Magazine (Japan), Courtesy Greg Timbers
The first prototype was developed in 1984 and consisted a four-way configuration. The Japanese press toured Northridge at that time and sketched this original prototype. It was later included in a cartoon on the development of the Everest. It is the only illustration that remains of this system. Numerous problems existed in this prototype related to the integration of the four drivers. It was decided to simplify the design to result in what was fundamentally a two-way concept. A super tweeter would later be added to provide extension to the highest octaves. Therefore, the final configuration became a three-way system.