uteman1011 Posted November 14, 2021 Share Posted November 14, 2021 I rescued a pair of H1’s yesterday. Birch raw painted black and in poor shape so I’ll probably sand, bondo and repaint. Both tweeters are dead. I measured on the multimeter and the come up zero. Can I simply change out the diaphragms and be good to go, or is there more to it than that? Quote Link to comment Share on other sites More sharing options...
uteman1011 Posted November 14, 2021 Author Share Posted November 14, 2021 1 Quote Link to comment Share on other sites More sharing options...
jimjimbo Posted November 14, 2021 Share Posted November 14, 2021 Changing the diaphragms is all you should need to do. https://critesspeakers.com/klipsch_tweeters.html Quote Link to comment Share on other sites More sharing options...
ClaudeJ1 Posted November 14, 2021 Share Posted November 14, 2021 18 minutes ago, jimjimbo said: Changing the diaphragms is all you should need to do. https://critesspeakers.com/klipsch_tweeters.html Yes. Leaves me wondering how much clipping or overpowering amplifiers abused those Heresys to blow the tweeters. The Heresy was the most rugged of the Klipsch Heritage because of it's high impedance. Easy fix either way. 1 Quote Link to comment Share on other sites More sharing options...
Racer X Posted November 14, 2021 Share Posted November 14, 2021 I've seen a pair of the K-77 M tweeters for sale in the garage sale section.... 1 Quote Link to comment Share on other sites More sharing options...
ClaudeJ1 Posted November 14, 2021 Share Posted November 14, 2021 17 minutes ago, Racer X said: I've seen a pair of the K-77 M tweeters for sale in the garage sale section.... Since the tweeters in the photo are the "mud magnet" version that keeps it's magnetization much, much longer than the old Alnico Magnet versions of K77's, I think just replacing the Diaphrams is still the "mo betta cheapa" option, oui? 1 Quote Link to comment Share on other sites More sharing options...
uteman1011 Posted November 14, 2021 Author Share Posted November 14, 2021 Thanks for all the feedback! I’ll order a pair of diaphragms and give it a shot. Quote Link to comment Share on other sites More sharing options...
OO1 Posted November 14, 2021 Share Posted November 14, 2021 23 hours ago, uteman1011 said: Thanks for all the feedback! I’ll order a pair of diaphragms and give it a shot. the diaphragms sold online for the Klipsch K-77 are Aftermarket made on the same jigs in China - the cups are assembled in the PH , a Made in China diaphragm is soldered it to a plastic cup . Part Numbers .......Aftermarket K77 diaphragm is Part # 89486A ( cups or no cups -same diaphragm ) Aftermarket K77 diaphragm with the cups is Part # 89486A Faceplate or 127126 -89486A Prices : 2x 36$ https://www.ebay.com/itm/111682597741?hash=item1a00cd336d:g:~8AAAOSwCy5ck8d6 1x19,95$ https://www.simplyspeakers.com/klipsch-replacement-speaker-diaphragm-k77-89486a.htm klipsch Authorized 1x cup 57$ https://www.amazon.com/Klipsch-Factory-Speaker-Diaphragm-127126/dp/B00IT1CG4K 1 Quote Link to comment Share on other sites More sharing options...
OO1 Posted November 14, 2021 Share Posted November 14, 2021 4 hours ago, uteman1011 said: Can I simply change out the diaphragms here 's the installation video , 10-15 minutes per unit is all it takes -you'll re-use the diaphragm gasket , no need to over-tighten the 4 screws , snug tight all around - 1 Quote Link to comment Share on other sites More sharing options...
Madman1 Posted November 14, 2021 Share Posted November 14, 2021 @RandyH So in your eyes the $14 one is as good as any other? Strange color on the cheap one. Quote Link to comment Share on other sites More sharing options...
KT88 Posted November 14, 2021 Share Posted November 14, 2021 I had bought new diaphragms for my K77 from a Dutch dealer but my repair store said they were the cheap bad ones from China. My original diaphragms were found to be good and continued to be used, only the Alnicos were remagnetized. To be safe I would buy the diaphragms from Crites. There are obviously different qualities. I would carefully connect one of the dead tweeters to a small battery once to see if it is really dead or if it gives a crack sound. Not that the crossover is the reason. 1 Quote Link to comment Share on other sites More sharing options...
OO1 Posted November 14, 2021 Share Posted November 14, 2021 @Madman1 all current diaphragms are aftermarket copies of the EV diaphragm , all are Made in China ,- the EV diaphragms were discontinued in 2000 - Here are the Part numbers you must look out for anytime you want to buy an Aftermarket K77 diaphragm of decent quality - Part Numbers .......Aftermarket K77 diaphragm is Part # 89486A ( cups or no cups -same diaphragm ) Aftermarket K77 diaphragm with the cups is Part # 89486A Faceplate or part # 127126, 89486A Klipsch Authorized Store 57$ -Klipsch Factory Speaker Diaphragm K77-F, 127126, 89486A https://www.amazon.com/Klipsch-Factory-Speaker-Diaphragm-127126/dp/B00IT1CG4K 2 Quote Link to comment Share on other sites More sharing options...
Madman1 Posted November 14, 2021 Share Posted November 14, 2021 I agree that what crites has is probably better, although I’ve read somewhere that his are just Chinese too, but not sure if I want to use k77 when the dust settles and $100 for crites after shipping is too much just for me to try. 1 Quote Link to comment Share on other sites More sharing options...
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