JKent Posted October 18, 2012 Report Share Posted October 18, 2012 Working on some KA-1s. The crossover is very complex: three 25uF caps, three 20uF caps and one 10uF. Also a 30 ohm resistor and three 2.5 ohm resistors. Four smaller inductors and 1 larger.Here's the thing: at one point in the circuit, there are two 2.5 ohm resistors in parallel, with a black wire jumped from one end to the other. In other words, a short circuit. I have no idea why the resistors are even in there!Can anyone help with this? Here's a photo.Thanks,Kent Link to comment Share on other sites More sharing options...
JKent Posted October 21, 2012 Author Report Share Posted October 21, 2012 Thanks to Paolo I have the schematic and thanks to John O' we'll have one with all the values to post.Re: The above photo. Those resistors are not on the schematic. John figures someone put 1.25 ohms in series with the woofer to make it higher DCR. This is a 4 ohm speaker system (the tweeter is 8 ohms). Later the jumper was added presumably because the owner got an amp that would handle 4 ohms.I'll post the full saga with photos when there's more progress.Kent Link to comment Share on other sites More sharing options...
jessearias Posted January 17, 2013 Report Share Posted January 17, 2013 Kent,Thats one hell of a crossover! Now you got me cuious, I want to check out the crossover in my subwoofer. Link to comment Share on other sites More sharing options...
JKent Posted January 17, 2013 Author Report Share Posted January 17, 2013 More photos in this thread:http://www.classicspeakerpages.net/IP.Board/index.php?showtopic=7521It's pretty complex (some say overly so)Kent Link to comment Share on other sites More sharing options...
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