Giorgio AR Posted December 7, 2021 Report Share Posted December 7, 2021 Looking today in my photographic archive I found some photos of an early 12" ceramic woofer of AR3a, this has the rubber" ring "on the cone like the previous woofers with Alnico magnet, looking carefully at the photos, luckily on the back of the magnet appears the stamp with the date! I own 2 early woofers with the three-recessed ceramic magnet (without the "ring"), but only one of them have dating stamped! 1)Dated: FEB 5 1970 2) Undated (this and the next are my woofers) 3) Dated MAR 11 1971, in original condition in the photo, now currently refoamated, like the previous undated one! Quote Link to comment Share on other sites More sharing options...
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