Flashback67 Posted January 28, 2017 Share Posted January 28, 2017 I am repairing a built in home stereo system that uses Frazier speakers in every room. Each speaker is a 12 x 12 x 16 cabinet with an 8" woofer and a 5 x 7 tweeter. The tweeters are the black bell type with alnico magnetics. The tweeters are blown in at least 2 of 12 tweeters, and there are at least a couple more. Knowing that there is a lot of common driver parts between Klipsch and Frazier, I am posting my questions here and in the Frazier sites. Checking the internet I cannot find any diaphragm replacement kits. Are there any available? Next option is I have found some 5 X 7 Frazier replacement tweeter assemblies at a decent price, but the magnetic arrangement is different. Instead of the tall small diameter alnico style magnet under a plastic cup, it has a short large diameter magnetic and no cup. The tweeters are marked on the back with: Frazier F-3x7 N4850-F 114850-F U.S.PAT. 3,898,393 Are these equivalent specs? And what are the differences? Thanks in advance 1 Quote Link to comment Share on other sites More sharing options...
djk Posted January 28, 2017 Share Posted January 28, 2017 A Heresy II diaphragm should work just fine. Quote Link to comment Share on other sites More sharing options...
JohnA Posted January 30, 2017 Share Posted January 30, 2017 Really! How handy is that? And curious. Quote Link to comment Share on other sites More sharing options...
djk Posted February 6, 2017 Share Posted February 6, 2017 A little work may be required. The horns with Alnico magnets had a cup cast into the back (of the horn) that needs a chunk broken out with a pair of pliers for the terminal board. Quote Link to comment Share on other sites More sharing options...
Flashback67 Posted February 8, 2017 Author Share Posted February 8, 2017 Thanks, however I found a more direct replacement. No modification required. http://www.ebay.com/itm/331666323775?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT Quote Link to comment Share on other sites More sharing options...
djk Posted February 8, 2017 Share Posted February 8, 2017 Do you have the skills to align the diaphragm? I've done it before, but it requires a degree of skill that many will not have. It's similar to the earliest EV T35/K77 that don't use the plastic carrier. Also, you need to check the coil height vs the plane of the dome edge. Quote Link to comment Share on other sites More sharing options...
Flashback67 Posted February 9, 2017 Author Share Posted February 9, 2017 DJK, I found a retired aerospace engineer that rebuilds vintage hifi equipment as a hobby. He has already rebuilt multiple Frazier horn tweeters. He is also re conning my woofers, which are Altec 403A ALNiCO based. Quote Link to comment Share on other sites More sharing options...
djk Posted February 10, 2017 Share Posted February 10, 2017 Check the dimensions, and if they check out you shouldn't have any problems then. Please let us know how it works out. Quote Link to comment Share on other sites More sharing options...
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