Loneshark Posted March 7, 2017 Share Posted March 7, 2017 I just picked up a pair of 83 Heresys. I plan on bringing the components on the crossover back up to modern times but wanted to make sure the actual drivers worked before investing in the crossover. So long story short- the tweeters needed new diaphragms and I got them. I had some trouble unsoldering the old ones and melted some (minor) portion of the assembly but when I finished installation of the new diaghragm...no sound. Hooked up the squaker to the tweeter terminals and I get sound. My new tweeter is a different story though on the same terminals. I must be missing some knowledge here. How can I know if the new assembly is adequately soldered? Any ideas from the brethren? Quote Link to comment Share on other sites More sharing options...
avguytx Posted March 7, 2017 Share Posted March 7, 2017 Do you have a multimeter to test for resistance with? Did you try hooking the tweeters by themselves directly to the speaker wires at low volume to see if they have output per chance? Quote Link to comment Share on other sites More sharing options...
Loneshark Posted March 7, 2017 Author Share Posted March 7, 2017 I do have a multimeter, but not on me now. I can report back later. For your second part, do you mean before I solder them in? I was under the impression that the diaghraphm would need to be in the magnet assembly to function Quote Link to comment Share on other sites More sharing options...
avguytx Posted March 7, 2017 Share Posted March 7, 2017 No, playing them after they are soldered in. Quote Link to comment Share on other sites More sharing options...
Loneshark Posted March 11, 2017 Author Share Posted March 11, 2017 Sit-rep: Finally had time to sit and tinker. So what I've found is that the tweeter assembly where the diaphragm gets soldered on has not been compromised by my novice soldering and melting techniques. I tested this by externalizing an entire copper wire cable of about 8 inches and running it on the same course as the tweeter diaghram. Good news...the wire is a circuit if the two terminal ends are connected. So I've now pretty much decided that at some point in my first attempt at tweeter diaphragm replacement I broke my brand new voice coil or lead wires. All that's no fun but I've put another on order and hope to replicate my very successful replacement of the other tweeter. Caps (Solen, 5%, metalized polypropylene) are also on order and I'll drop those in the crossover next week. Additionally, I've done quite a bit of reading on this forum about replacing the T2A transformer and the inductor but have decided not to despite their visual age. Any further thoughts on the crossover bits? Quote Link to comment Share on other sites More sharing options...
avguytx Posted March 13, 2017 Share Posted March 13, 2017 I wouldn't worry about changing out the inductors or the autoformers, personally. Unless something was wrong with them or, well, you just want to. Did you get new diaphragms in yet? Quote Link to comment Share on other sites More sharing options...
Loneshark Posted March 13, 2017 Author Share Posted March 13, 2017 I'm on a complete freeze. The new diaphragm and caps come in sometime this week. I'm hopeful that it and the caps will happen around the same time because I really want to hear these things play. I've put the working K-77M, one of the K-53-K horns, and a K-22 in a cabinet and put the back on with the original crossovers. I'm amazed at how much better they sound since the time when I initially took them home- more balanced, less depressing. A little TLC really helped these babies in sound and looks. My girlfriend was a little taken back at how bright the highs were and honestly so was I. I'm messing around with taping a 2 ply tissue in the horn's throat to quell the shrill (but then again that's just the old Klipsch heritage style). Quote Link to comment Share on other sites More sharing options...
ricktate Posted March 14, 2017 Share Posted March 14, 2017 On BOB Crites site there are complete instructions to put in the diaphragms. Do you have a treble control to tame the high freq.? I think your just not use to hearing good speakers I do not think they are shrill at all. When you rebuild the crossover you should get a little better sound I think. Quote Link to comment Share on other sites More sharing options...
EJC Posted March 14, 2017 Share Posted March 14, 2017 Sorry to read your problems. I'm sure you'll work your way through them and in the end, you'll have a great sounding speaker. Quote Link to comment Share on other sites More sharing options...
Loneshark Posted March 14, 2017 Author Share Posted March 14, 2017 "I think your just not use to hearing good speakers" I really hope that isn't the case or my Fortes were a waste haha but I know what you mean. This is my first run through with the true Heritage line instead of my extended Heritage. I'm running a Yamaha receiver so my treble control is limited a little. The working Heresy I have now doesn't sound bad, just very efficient. Quote Link to comment Share on other sites More sharing options...
Loneshark Posted March 18, 2017 Author Share Posted March 18, 2017 Woo! Thank goodness this week is finally over. I sat down tonight and installed the new tweeter diaphragm and made sure it worked. New caps were also installed tonight in one network for A/B purposes. Talk about a second wind....cymbal hits during music playback on the updated crossover network are in your face while the old network kind of shrugs off the cymbal all together. I'm so glad I paid the money for the new caps. Also I made the mistake of finding out how hot solder is on the back of my hand. Every speaker project leaves a mark but this is my first with solder. Does that mean I'm in the club now? 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.