The woofer of the 890C was carefully designed by Altec engineers to mimic the sonic characteristics of the large Altec systems based on motion picture theater components. Besides its 3" voicecoil and 414 motor it also has an unusual dual profile cone which changes from convex at the center to concave at the outer edge. This is one very serious 10" woofer-midrange.
I paid $100 for my Boleros about, oh, 15 years ago. When I owned the 890Cs I also owned several large Altec systems---A7-500s, Model 19s, 605As and Heath AS-21s and can attest that the 890Cs are of the same sonic cloth as the big boys.
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