mikega Posted July 18, 2023 Share Posted July 18, 2023 I am new to restoring vintage audio equipment and I have a question. When testing my Klipsch Chorus 1 speakers with a multi meter, I understand the ohms part with regards to what I am looking for. What else should I be testing with the multi meter? Sorry if this is low level for the group but its kind of where I'm at. lol. Thanks for the help, Mike Marantz 2270 Klipsch Chorus 1 1 Quote Link to comment Share on other sites More sharing options...
OO1 Posted July 18, 2023 Share Posted July 18, 2023 you're testing all drivers to make sure that the readings in Ohms match up as close as possible ... per pair of woofers , midrange drivers and tweeters - readings must follow the impedance of the driver to indicate the good condition of the component. -if there are big variations , between 2 drivers , the driver or the diaphragm inside the driver may be defective or on the way out , as worn out . 1 Quote Link to comment Share on other sites More sharing options...
billybob Posted July 18, 2023 Share Posted July 18, 2023 How are your Chorus sounding with the 2270 @mikega? Quote Link to comment Share on other sites More sharing options...
mikega Posted July 18, 2023 Author Share Posted July 18, 2023 They are actually getting dropped off today so I will let you know. I've been reading up on rebuilds for the crossovers and such. Hopefully i will have them hooked up tonight and test them out. Looking for a turntable match also if there are any suggestions. Thanks Quote Link to comment Share on other sites More sharing options...
billybob Posted July 18, 2023 Share Posted July 18, 2023 1 minute ago, mikega said: They are actually getting dropped off today so I will let you know. I've been reading up on rebuilds for the crossovers and such. Hopefully i will have them hooked up tonight and test them out. Looking for a turntable match also if there are any suggestions. Thanks Cool...alot of decent, for the money TTs around. New to turntable? Some are 500 and much less. Quote Link to comment Share on other sites More sharing options...
mikega Posted July 18, 2023 Author Share Posted July 18, 2023 24 minutes ago, OO1 said: you're testing all drivers to make sure that the readings in Ohms match up as close as possible ... per pair of woofers , midrange drivers and tweeters - readings must follow the impedance of the driver to indicate the good condition of the component. -if there are big variations , between 2 drivers , the driver or the diaphragm inside the driver may be defective or on the way out , as worn out . Ok, Thank you, so another question. When you say they should all be close to each other in regards to impedance, I'm assuming that it is that 6-8 ohms range I am looking for? And all drivers should be close to that range ? Quote Link to comment Share on other sites More sharing options...
mikega Posted July 18, 2023 Author Share Posted July 18, 2023 4 hours ago, billybob said: Cool...alot of decent, for the money TTs around. New to turntable? Some are 500 and much less. Sounds like the price range I'm starting in. Thanks 1 Quote Link to comment Share on other sites More sharing options...
billybob Posted July 18, 2023 Share Posted July 18, 2023 Project, U-Turn, Rega, Audio Technica, Technics and a multitude of other brands as new, modern, some being simple easy setup and play. Others, used on places like craigslist. If you start a topic here, you will get a bunch of information. @mikega Quote Link to comment Share on other sites More sharing options...
mikega Posted July 18, 2023 Author Share Posted July 18, 2023 54 minutes ago, billybob said: Project, U-Turn, Rega, Audio Technica, Technics and a multitude of other brands as new, modern, some being simple easy setup and play. Others, used on places like craigslist. If you start a topic here, you will get a bunch of information. @mikega Thanks for the help. Really appreciate it. 1 Quote Link to comment Share on other sites More sharing options...
OO1 Posted July 18, 2023 Share Posted July 18, 2023 7 hours ago, mikega said: Ok, Thank you, so another question. When you say they should all be close to each other in regards to impedance, I'm assuming that it is that 6-8 ohms range I am looking for? And all drivers should be close to that range ? the woofers are 4 Ohms , the tweeters are 8 Ohms , the midrange driver is 16 Ohms Quote Link to comment Share on other sites More sharing options...
mikega Posted July 19, 2023 Author Share Posted July 19, 2023 15 hours ago, OO1 said: the woofers are 4 Ohms , the tweeters are 8 Ohms , the midrange driver is 16 Ohms gotcha. Thank you. Quote Link to comment Share on other sites More sharing options...
Islander Posted July 20, 2023 Share Posted July 20, 2023 Keep in mind that those official specs are impedance (resistance while AC is applied, like normal speaker operation) figures, while your meter measures resistance (resistance while DC is applied), so the numbers will be a bit different from the specs, although both resistance and impedance are measured in ohms. However, the figures for the drivers (both tweeters, both squawkers, both woofers) should be similar to each other. Of course, the woofers don't need to have the same exact resistance figures as the tweeters. The other thing you can test for is continuity (does the driver have a complete circuit that is, does the power go in one terminal and come out the other one?) This is troubleshooting in the case of a non-functioning driver, so it won't apply in your case. Just wanting to give you the complete picture. 1 Quote Link to comment Share on other sites More sharing options...
billybob Posted July 20, 2023 Share Posted July 20, 2023 And, keep in mind that, while cool to know, more likely you will derive more pleasure from a refresh of crossover if the time comes. Ordinarily, owners do not pull components to measure unless, there is an evident problem.☕ Quote Link to comment Share on other sites More sharing options...
mikega Posted July 20, 2023 Author Share Posted July 20, 2023 58 minutes ago, billybob said: And, keep in mind that, while cool to know, more likely you will derive more pleasure from a refresh of crossover if the time comes. Ordinarily, owners do not pull components to measure unless, there is an evident problem.☕ Thanks Billy Bob, I do have them now and they are in amazing condition. Turns out the guy purchased a storage locker at an auction and these were in there. I am grabbing some monster cabling today and testing them out. I was thinking of rotating the woofers since i saw that suggested sue to possible woofer sag in original component 1 Quote Link to comment Share on other sites More sharing options...
mikega Posted July 20, 2023 Author Share Posted July 20, 2023 6 hours ago, Islander said: Keep in mind that those official specs are impedance (resistance while AC is applied, like normal speaker operation) figures, while your meter measures resistance (resistance while DC is applied), so the numbers will be a bit different from the specs, although both resistance and impedance are measured in ohms. However, the figures for the drivers (both tweeters, both squawkers, both woofers) should be similar to each other. Of course, the woofers don't need to have the same exact resistance figures as the tweeters. The other thing you can test for is continuity (does the driver have a complete circuit that is, does the power go in one terminal and come out the other one?) This is troubleshooting in the case of a non-functioning driver, so it won't apply in your case. Just wanting to give you the complete picture. Will do. Thanks for the help. Quote Link to comment Share on other sites More sharing options...
billybob Posted July 20, 2023 Share Posted July 20, 2023 15 minutes ago, mikega said: Thanks Billy Bob, I do have them now and they are in amazing condition. Turns out the guy purchased a storage locker at an auction and these were in there. I am grabbing some monster cabling today and testing them out. I was thinking of rotating the woofers since i saw that suggested sue to possible woofer sag in original component Don't think any sag issues with the K-48 woofer but, if do be careful as the mounting gasket may be fragile if over handled. Plus, the woofers are heavy. Hands off guy here. Want to see them at some point. Like to play speakers for awhile before doing anything. 1 Quote Link to comment Share on other sites More sharing options...
mikega Posted August 3, 2023 Author Share Posted August 3, 2023 On 7/18/2023 at 8:16 AM, billybob said: How are your Chorus sounding with the 2270 @mikega? I have them hooked up and they sound amazing in my big room 2 Quote Link to comment Share on other sites More sharing options...
billybob Posted August 3, 2023 Share Posted August 3, 2023 2 hours ago, mikega said: I have them hooked up and they sound amazing in my big room Cool, no surprise there... enjoy. Quote Link to comment Share on other sites More sharing options...
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