I picked up a pair of Heresys in a trade for a tube amp. They have some discoleration on the tops but the drivers are mint. They are HWO 1982 models I believe. Any idea how to decipher the dates of these drivers.

Heresy Walnut Oil...what does it say on the tag???
Bill

Numbers are 41RO81. I'm assuming 1981?

I believe R is 1977...possibly AlNiCo magnets (round domes on rear of speakers)...nice.

http://home.earthlink.net/~ivol/klipsch_cornwall/klipsch_date_codes.htm
(with thanks to mobilhomeless)

Bill

Right you are. Bass drivers are ceramic but the tweeters and mids are alnico.

Thanks

Peter