KLH 1980-90 Any Acoustic suspension models

[JerStC]

Been researching out of curiosity if any of the post 1980 - pre China Mfg models were acoustic suspension?

 

[RxDx]

Quick search: 1980-82: 337, 327, 317B, 331B

 

[JerStC]

Quick search: 1980-82: 337, 327, 317B, 331B

Thanks.

 

[Nat]

Not sure what your curiosity is directed toward, but the term acoustic suspension has ended up covering a broader range of alignments than originally specified. Originally, in Ed Vilchur's definition, it was a heavy, loosely suspended cone which would have a very low resonant frequency mounted in a small sealed enclosure that would shift the resonant frequency up (into the audible range) and damp the peak, resulting in deep bass from a small box with smooth frequency response. In the years since, the definition has smeared into that of infinite baffles and become sort of a generic term for sealed box, smothering the different and, if properly done, justified qualities of each. I don't know if this is a bad thing - speakers are actual physical things, and theoretical definitions aren't themselves inherently valuable - there are excellent speakers that fit the definitions, and excellent speakers that mess with them.
But that is what is fun about speakers, and about audio in general.

 

[JerStC]

Thanks, I was really curious about whether KLH continued to make any sealed cabinet speakers at the end of the USA manufacturing tenure.