pleeson Posted February 7 Report Share Posted February 7 Two 1-1/2" midrange drivers from a set of AR3a's Both are stamped with 1967 dates, making them the earliest version. I think they might have been installed in 1969. AR part # 4500-1, 4 ohm Both seem to work OK and measured 3.1 ohms resistance. Quote Link to comment Share on other sites More sharing options...
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