jason.justice Posted May 29, 2022 Share Posted May 29, 2022 Thanks to all you who have been answering my crazy questions the last few weeks. I just brought home a pair of 1983 Cornwalls. Only one owner. All original parts. Here’s the component list so I’m assuming they are Cornwall 1.5. Cornwall 1983 K-77-M K52H K-33E B-3 crossover one of the tweeters is super quiet. I’m hoping I can fix that with a simple recap. I’ve reached out to Crites for recommendations but if you have any suggestions on mods or steps to take to bring these up to snuff please share. Thank you!! 3 2 Quote Link to comment Share on other sites More sharing options...
Peter P. Posted May 30, 2022 Share Posted May 30, 2022 I'd measure the DC resistance of each tweeter and compare to see if the suspect tweeter has a significantly higher reading. You can measure at the crossover if you disconnect one leg of the tweeter wiring. You could also run some FM inter-station noise through the speakers and measure the AC voltage at each tweeter terminal and compare. Disconnect the tweeter completely from the crossover. A significantly lower reading at the crossover output would confirm it's a capacitor, otherwise I would leave it alone. 2 Quote Link to comment Share on other sites More sharing options...
jason.justice Posted May 30, 2022 Author Share Posted May 30, 2022 15 hours ago, Peter P. said: I'd measure the DC resistance of each tweeter and compare to see if the suspect tweeter has a significantly higher reading. You can measure at the crossover if you disconnect one leg of the tweeter wiring. You could also run some FM inter-station noise through the speakers and measure the AC voltage at each tweeter terminal and compare. Disconnect the tweeter completely from the crossover. A significantly lower reading at the crossover output would confirm it's a capacitor, otherwise I would leave it alone. What equipment do I need to do these tests? I’m a little confused. Thanks. Quote Link to comment Share on other sites More sharing options...
CWOReilly Posted May 30, 2022 Share Posted May 30, 2022 1 hour ago, jason.justice said: What equipment do I need to do these tests? I’m a little confused. Thanks. We’ll assume amplification is good. First verify all connections are secure. Loosen and tighten every screw on the crossover barrier strip and try again. This fixes many speakers. If still having trouble you’ll need a good volt/ohm multi meter to measure resistance etc. Good luck! 2 Quote Link to comment Share on other sites More sharing options...
Bubo Posted May 31, 2022 Share Posted May 31, 2022 Clean all of the connections and gently inspect everything take some photos and post them Wiring may be dry rotted, plan on replacing all of it Mid range horn, aka squeaker, gasket between driver and horn is guaranteed dry rotted Caps on the crossovers are way past predicted life span Easiest and maybe best solution is a set of new Crites crossovers. Once disconnected, you can check the resistance of each driver, write it down and post it here. A basic Multi-meter from the hardware store should test in Ohms. Tell us what you find..... Quote Link to comment Share on other sites More sharing options...
jason.justice Posted June 1, 2022 Author Share Posted June 1, 2022 (edited) Just ordered new caps and tweeters from Crites. Here are some photos (sorry for the multiple posts. stupid file size limits!): Edited June 1, 2022 by jason.justice multiple posts. 1 1 Quote Link to comment Share on other sites More sharing options...
jason.justice Posted June 1, 2022 Author Share Posted June 1, 2022 2 Quote Link to comment Share on other sites More sharing options...
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geoff. Posted June 2, 2022 Share Posted June 2, 2022 The Crites CT-120s will do those justice... wait, what? lol 1 Quote Link to comment Share on other sites More sharing options...
jason.justice Posted June 2, 2022 Author Share Posted June 2, 2022 14 hours ago, geoff. said: The Crites CT-120s will do those justice... wait, what? lol LOL. I have a pair and a cx rebuild kit on the way! 1 Quote Link to comment Share on other sites More sharing options...
Dave1291 Posted June 2, 2022 Share Posted June 2, 2022 See you survived! hahahaha For now! We're gonna keep an eye on you in here to see what's next. LS or gonna jump in w/both feet and get the K horns? 😂 It's only money. Right? 1 Quote Link to comment Share on other sites More sharing options...
jason.justice Posted June 3, 2022 Author Share Posted June 3, 2022 Testing the speakers this weekend. Will send more pics! 1 Quote Link to comment Share on other sites More sharing options...
Dave1291 Posted June 3, 2022 Share Posted June 3, 2022 Hopefully your new 120's aren't in yet. lol Don't get too nuts said no one ever! Enjoy pissing off the neighbors! Mine are trained Quote Link to comment Share on other sites More sharing options...
jason.justice Posted June 3, 2022 Author Share Posted June 3, 2022 if anyone can help with identifying the impedance for the individual parts, here is this thread Quote Link to comment Share on other sites More sharing options...
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