Is there a big difference in speaker quality an performence since the 70-ties ? For example the woofer, how much can you improve on the technology, and is a mass produced modern woofer better than a hand build old JBL woofer from the 70īties - like the D123A-3 ?

Most modern speakers use one or two 8" woofers, are they better than the 12" woofers used in the 70 and 80īties ?

Anybody have some comments ?