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// 1HP = 1/5" = 5.08mm function units_mm(u) = u * U; main synth_tools/PCB Notes.txt 17 lines Notes from MK's PCB livestream Footprints: - avoid non-circular holes in footprints whenever possible; some fabs charge more for ovals - make power connection traces larger; MK uses .6mm -- this is a combination of speakON socket and 6.35mm (1/4in) stereo jack, vertical PCB mount, retention spring, https://www.neutrik.com/en/product/ncj9fi-h Combo I series, 3 pole male XLR receptacle, grounding: without ground / shell contact, lateral left PCB mount, asymmetric push, https://www.neutrik.com/en/product/nc3fbh1-da B Series, 3 pole female XLR receptacle, grounding: ground contact to mating connector shell and front panel, steel retention lug, vertical PCB mount, asymmetric push, https://www.neutrik.com/en/product/nc3faav1-da AA Series, 3 pole male XLR receptacle, grounding: mating connector shell and front panel, vertical PCB mount, https://www.neutrik.com/en/product/nc5fbv A Series, 4 pole chassis connector, metal housing, vertical PCB mount, https://www.neutrik.com/en/product/nc3fbv1 B Series, 3 pole male XLR receptacle, grounding: mating connector shell and front panel, steel retention lug, vertical PCB mount, https://www.neutrik.com/en/product/nc3fahr2 A Series, 3 pole female XLR receptacle, grounding: ground contact to mating connector shell to pin1 and front panel, vertical PCB mount, https://www.neutrik.com/en/product/nc3fah2 A Series, 3 pole female XLR receptacle, grounding: separate ground contact to mating connector shell and front panel, vertical PCB mount, asymmetric push, https://www.neutrik.com/en/product/nc3fav1-da A Series, 3 pole female XLR receptacle, grounding: mating connector shell and front panel, horizontal PCB mount, https://www.neutrik.com/en/product/nl4md-v-2 speakON Chassis Connectors, 4 pole chassis connector, red D-size flange, countersunk thru holes, vertical PCB mount, https://www.neutrik.com/en/product/nc4mav.

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