Little Dj Posted July 5, 2022 Share Posted July 5, 2022 Hello I need help with these RF82-II crossovers. Measurements for L2 and L1. Both coils look burned and plastic has melted somewhat. Maybe someone has those measured in ohms or can help me out with replacements numbers Thanks in advance Miku from Estonia Quote Link to comment Share on other sites More sharing options...
billybob Posted July 6, 2022 Share Posted July 6, 2022 Bump Quote Link to comment Share on other sites More sharing options...
Deang Posted July 7, 2022 Share Posted July 7, 2022 I don't see a schematic for it. Even if the insulation is burned off the wire, you will still be able to get a DCR reading with a multimeter. You need to get those numbers. The inductance for each coil is printed beneath each inductor on the physical board. Well, should be. 1 Quote Link to comment Share on other sites More sharing options...
billybob Posted July 7, 2022 Share Posted July 7, 2022 @Little Dj Quote Link to comment Share on other sites More sharing options...
Little Dj Posted July 8, 2022 Author Share Posted July 8, 2022 Hello Only things printed on board, are L1 and L2. Nothing else. I think if the insulation is burned/melted off, it will give me very low ohms. It would show like the wire is really short, so it has like 0.1 ohms or so.. But i think, since the coil has alot of wire, should have higher ohms. Quote Link to comment Share on other sites More sharing options...
billybob Posted July 8, 2022 Share Posted July 8, 2022 2 hours ago, Little Dj said: Hello Only things printed on board, are L1 and L2. Nothing else. I think if the insulation is burned/melted off, it will give me very low ohms. It would show like the wire is really short, so it has like 0.1 ohms or so.. But i think, since the coil has alot of wire, should have higher ohms. How about some good pics of the crossovers. Guess both speakers, involved? And how they sound? Thanks! Quote Link to comment Share on other sites More sharing options...
mboxler Posted July 8, 2022 Share Posted July 8, 2022 6 hours ago, Little Dj said: Only things printed on board, are L1 and L2. These are on Ebay. Zooming in on the last picture, looks like L1 is .15mH and L2 is .51mH. Hopefully they are labeled correctly. https://www.ebay.com/itm/255515554642?chn=ps&norover=1&mkevt=1&mkrid=711-117182-37290-0&mkcid=2&itemid=255515554642&targetid=1263433206654&device=c&mktype=pla&googleloc=9028825&poi=&campaignid=16190447015&mkgroupid=128435277530&rlsatarget=aud-1297930287298:pla-1263433206654&abcId=9300820&merchantid=6296724&gclid=EAIaIQobChMI49iKrazp-AIVVBh9Ch0W0wZgEAQYASABEgLtfvD_BwE 3 Quote Link to comment Share on other sites More sharing options...
Deang Posted July 8, 2022 Share Posted July 8, 2022 At that price, just buy the networks! 1 Quote Link to comment Share on other sites More sharing options...
billybob Posted July 8, 2022 Share Posted July 8, 2022 @Little Dj Quote Link to comment Share on other sites More sharing options...
Little Dj Posted July 9, 2022 Author Share Posted July 9, 2022 Hello. Ive soldered coils off from one crossover and i haven't taken any pics, since i haven't had time. Might do it soon enough. Since those go in my friends speakers, we should test other ones too, since they are kinda same version i think. Even though bass ones have kinda different color theme or it was more likely light thing.. I'll see if i can manage to get new coils and then test these out. I did replace cones from tweeters since the coils were burned and tested on different brand speakers that they work. But after first time we installed on speakers, they were soo quiet. Then we tested on working pair and they sounded good. Then took off crossovers and figured that it has something to do with these coils since nothing else looks burned. Thanks mboxler to help with those markings. Now i can look for those coils from shops and see if i can get these crossovers back to play again. 1 Quote Link to comment Share on other sites More sharing options...
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