Greetings to all who stopped by!:)
I have come up with a pair of SDA 2 speakers, I think they are 2Bs'. I am trying to determine what version of SDA 2Bs' these are, and what year, 1987 or 1989. These have the pin/blade IC, SL2000 tweeter, and the typical 2 drivers and 1 12" PR. These do not have the end caps.
According to the schematics, the drivers part#'s are the same in the 87 and 89 versions. The schematics do not show a part# for tweeter in the 87 version, but do reference a SL2000 in the 89 version. All in all the 89 version of the schematics looks to be the same as the 87 version, just a better drawing, I am still looking at this to see if there is indeed a "noted" difference.
What am I missing?