Dylanl Posted December 2, 2004 Share Posted December 2, 2004 My speakers are nubered KC-BR 12SO86 12SO87 What year are these and finish? Quote Link to comment Share on other sites More sharing options...
Tom Mobley Posted December 2, 2004 Share Posted December 2, 2004 1978, IIRC. Same as my Heresys. KC = Model C, no riser between top and bottom. BR = Birch, Raw. Lots of these were painted, mostly black, I think. Aren't yours the white ones? Nice year, all alnico drivers and AA crossovers. Quote Link to comment Share on other sites More sharing options...
Tom Mobley Posted December 2, 2004 Share Posted December 2, 2004 here's my chart, but the BBS always squeezes the columns of numbers together. KLIPSCH S/N FORMATS DATES DISCRIPTION EXAMPLE 1946-1947 ### (001) ending #021 1948-1961 #### (0121) starting #0121 1946-1961 dates can only be found in log book (eng. Library) Klipschorns of this vintage had the s/n hammer stamped into the tailboard, woofer access door or inside the woofer chamber. 1962-1983 ##letter#### (20Y1234) 1962-1983 Letter format A=62 F=67 K=72 R=77 X=82 B=63 G=68 L=73 S=78 Y=83 C=64 H=69 M=74 T=79 D=65 I=70 N=75 U=80 E=66 J=71 P=76 W=81 1984-1989(?) YY WW #### (89281234) 1990-1997(?) DOY Y2Y1 #### (135791234) DOY= day of the year Y2Y1=2nd digit of year, 1st digit of year 1998-2000 YY WW #### (00281234) YY=year (i.e. 99,00) WW=week of the year Date code on drivers (1994) Example 9429 = 1994, 29th week of the year / YYWW Quote Link to comment Share on other sites More sharing options...
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