Tom C Posted August 30, 2016 Report Share Posted August 30, 2016 Hi, New guy here. I just got these AR's (serial #s C3995, C1231). Tag in back stamped AR-3a. The front grilles are on a plastic frame, and the cabinet is slotted, unlike my previous AR-3a's. Also, curiously, the tweeter and midrange are lacking the black goop. Any info appreciated. Link to comment Share on other sites More sharing options...
genek Posted August 30, 2016 Report Share Posted August 30, 2016 Possibly 3s that were upgraded to 3a. Link to comment Share on other sites More sharing options...
Tom C Posted August 30, 2016 Author Report Share Posted August 30, 2016 Thanks for the reply. Would a new paper label be include in the upgrade kit? Link to comment Share on other sites More sharing options...
ra.ra Posted August 30, 2016 Report Share Posted August 30, 2016 Not sure why the mid and tweet have so much paint removed, but the tweeter definitely looks like the proper 3a driver. I must be wrong about this, but I have long thought that the AR-3 had the "C" designation in the serial number, while the AR-3a actually preceded its number with the "3a" designation, as shown in these images. Why not post pics of the other speaker and both labels? Grille fabric also might lend some clues. Link to comment Share on other sites More sharing options...
Tom C Posted August 30, 2016 Author Report Share Posted August 30, 2016 Wii do. Link to comment Share on other sites More sharing options...
Tom C Posted August 30, 2016 Author Report Share Posted August 30, 2016 Here's more. Thanks for the input. Link to comment Share on other sites More sharing options...
genek Posted August 30, 2016 Report Share Posted August 30, 2016 A factory upgrade would have a new label. The fact that the label on yours has the serial number hand-printed on it suggests to me that that's what happened. Crossover mods, new mid and high drivers and new grill cloth and badge. Link to comment Share on other sites More sharing options...
ra.ra Posted August 30, 2016 Report Share Posted August 30, 2016 Looks like genek might be correct - - - could be a factory upgrade of an AR-3 to become an AR-3a, with new mid and tweeter, crossover changes, new grilles and badges. Slap on some fresh labels with the 3a designation, but serial numbers remain original. edit: genek and I were typing simultaneously, and yep, he nailed the mystery. Link to comment Share on other sites More sharing options...
Tom C Posted August 30, 2016 Author Report Share Posted August 30, 2016 Thank you, One less mystery for me to ponder. You guys know your s___. Link to comment Share on other sites More sharing options...
Tom C Posted August 30, 2016 Author Report Share Posted August 30, 2016 If I could trouble you with one more question, can the tweeters be tested for continuity without being disconnected? Link to comment Share on other sites More sharing options...
genek Posted August 30, 2016 Report Share Posted August 30, 2016 You'd have to disconnect at least one lead. Link to comment Share on other sites More sharing options...
Tom C Posted August 31, 2016 Author Report Share Posted August 31, 2016 Thanks Link to comment Share on other sites More sharing options...
GD70 Posted September 2, 2016 Report Share Posted September 2, 2016 I'm curious to see some pics of the crossovers. If the C serial numbers are the 3's original numbers, than these are early and most likely have or had the oil caps. Maybe still there with the mods done for the 3A conversion? My 3's are in the 6000 range and have the oil caps. Link to comment Share on other sites More sharing options...
Tom C Posted September 3, 2016 Author Report Share Posted September 3, 2016 If I do break into them, (pots are intermittent and could use attention) I'll post pics. Link to comment Share on other sites More sharing options...
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