twalkonline Posted December 21, 2013 Share Posted December 21, 2013 I feel like an archeologist, unearthing things that no living person has ever seen! First, does anyone have a schematic for this crossover? That would probably answer my questions. I found one for the KP 301-II, but this is different in several ways. I expected this one to look like a KP 201, crossover, but it does not. I don't see anything I recognize as a poly switch, although there are a couple of components in the tweeter circuit that I can't identify. They are epoxy potted in little black plastic cases and have no markings. Anybody know what these are? This version does not have separate HF and LF inputs for bi-amping, but it has a separate fuse for the tweeter. Would appreciate comments... Quote Link to comment Share on other sites More sharing options...
twalkonline Posted December 21, 2013 Author Share Posted December 21, 2013 After tracing the circuit, I've determined that the black epoxy potted mystery components have to be capacitors. Am guessing at values. The other caps are labeled 4J. Can't remember how that translates to uF. Hope my sketch of circuit is legible... 1 Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted December 21, 2013 Share Posted December 21, 2013 I believe Bob Crites has the schematic. There's also a general schematic thread somewhere with many drawings. I know there's a 301 drawing in it but I don'y know if it's a 1 or a 2. You might try searching for it. Quote Link to comment Share on other sites More sharing options...
moray james Posted December 21, 2013 Share Posted December 21, 2013 should be a similar network here. Best regards Moray James. Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted December 21, 2013 Share Posted December 21, 2013 (edited) The 301 and 301 II are completely different. Edited December 21, 2013 by CECAA850 Quote Link to comment Share on other sites More sharing options...
twalkonline Posted December 21, 2013 Author Share Posted December 21, 2013 Thanks. It's most similar to the Chorus I, but not exactly. KP has additional low pass filter in the mid circuit. Have redrawn - I think it's correct this time. Quote Link to comment Share on other sites More sharing options...
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