bruce Posted April 2, 2008 Share Posted April 2, 2008 Hi,I have a Tecpro BP111 beltpack, which at some point has had a custom headset connector fitted. I want to change it back to the original XLR4. Question - what's the mapping between pins 1-4 on the XLR and the PCB solder pads, which are numbered 3,4,5,6? From the printing and layout on the PCB, it looks like it might be 1-6, 2-5, 3-4, 4-3... Link to comment Share on other sites More sharing options...
boatman Posted April 4, 2008 Share Posted April 4, 2008 I'm in Whiting Bay hall tomorrow, so I'll open one up and get some pictures for you. Link to comment Share on other sites More sharing options...
boatman Posted April 5, 2008 Share Posted April 5, 2008 The connections are: XLR -> PCB. 1 -> 3. 2 -> 4. 3 -> 5. 4 -> 6 The two capacitors are 47nF and are connected between the chassis and each screen (pins 1 & 3). This is the best picture I could get. http://img.villagephotos.com/p/2006-5/1185528/BP111HeadphoneConnector.jpg Link to comment Share on other sites More sharing options...
bruce Posted April 5, 2008 Author Share Posted April 5, 2008 Thanks, John, that's ideal. The capacitors seem to be omitted on the one I've got. What you've listed is actually what I was thinking, although completely different numbering! I had been working from a "paper" pinout of the XLR, and was reading it from the wrong side. :P One of the pads on the PCB is offset from the arc of the other three; this seems to correspond with the offset pin on the XLR. Bruce. Link to comment Share on other sites More sharing options...
BlueShift Posted April 7, 2008 Share Posted April 7, 2008 hehehe I was just about to point out that the solder pads are deliberately arranged to match the visual shape of the NC4MX pins :-) Link to comment Share on other sites More sharing options...
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