Dexter3d Posted November 1, 2021 Share Posted November 1, 2021 Hi All, could someone knowledgeable let me know the pinout for kp250 jack speaker terminals? Are these mono or stereo (balanced) terminals? is the tip positive? also, one of the speakers is missing both fuses with holders. Original fuse is 32v 20amp, but these are rare and kind of expensive for a fuse. Would higher voltage alternatives work? In general, are these fuses necessary? Almost had an idea to use a piece of patch wire cheers, dex Quote Link to comment Share on other sites More sharing options...
Marvel Posted November 2, 2021 Share Posted November 2, 2021 They are only tip/ring, and the tip would be positive. Those should have a pair of binding posts, which be a far better connection than tje 1/4 inch phone (not phono) jack. Quote Link to comment Share on other sites More sharing options...
Marvel Posted November 2, 2021 Share Posted November 2, 2021 I stand corrected... it looks like a stereo jack but they only use two connection terminals. Here's a pic on one with labeling (not mine). Quote Link to comment Share on other sites More sharing options...
babadono Posted November 2, 2021 Share Posted November 2, 2021 Weird. I don't even know what that 3 pin picture is supposed to be depicting. Looks kinda like an XLR which it ain't. I'd have to take the terminal cup out just for curiousity's sake. Quote Link to comment Share on other sites More sharing options...
Marvel Posted November 2, 2021 Share Posted November 2, 2021 Yes, a bit strange to me as well. Quote Link to comment Share on other sites More sharing options...
Dexter3d Posted November 7, 2021 Author Share Posted November 7, 2021 Could someone explain if these fuses on speaker terminals are really necessary? I've heard that fuse resistance changes with a bit with heat, that might not be optimal? Quote Link to comment Share on other sites More sharing options...
captainbeefheart Posted November 7, 2021 Share Posted November 7, 2021 (edited) It is a TRS type 1/4 jack. It gives the option of using balanced or differential type electronics with common mode rejection for better noise control. +/- are the two phases for signal and the other is ground for use with xlr or balanced mic type cables. You do not have to set it up like that if you just want to run normal single ended. Just use regular RCA cable and tie the - and ground together. Tip would be + and ring/sleeve would be tied together. It's either that or they give you the option to separate signal - and safety ground to reduce noise using shielded speaker wire. In which you can just do the same as above with regular speaker wire, just tie ring and sleeve together for negative. You may have to open it up and take a look. Edited November 7, 2021 by captainbeefheart Quote Link to comment Share on other sites More sharing options...
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