Elizabeth & Jim -- great posts!
I'll just add that some of the most expensive and sought after speaker drivers in existence today are the field coil drivers from 1930's Western Electric theater speakers, which go for stratospheric prices on the rare occasions when they appear for sale.
Drivers from certain high-end 1930's radios, such as the 18 inch drivers that were made by Jensen and used in McMurdo Silver sets ca. 1935, can also command multi-kilobuck prices.
Which would seem to say something about how long well-made raw drivers (as distinguished from crossover elements) can last and continue to perform well.
Regards,
-- Al
I'll just add that some of the most expensive and sought after speaker drivers in existence today are the field coil drivers from 1930's Western Electric theater speakers, which go for stratospheric prices on the rare occasions when they appear for sale.
Drivers from certain high-end 1930's radios, such as the 18 inch drivers that were made by Jensen and used in McMurdo Silver sets ca. 1935, can also command multi-kilobuck prices.
Which would seem to say something about how long well-made raw drivers (as distinguished from crossover elements) can last and continue to perform well.
Regards,
-- Al