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Sennheiser HSP-4 Headset to 5-pin Lectrosonics wiring?

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Hi all, 


I need to wired up a bunch of Sennheiser HSP-4 headsets for 5-pin Lectrosonics. I have done plenty of 2-wire Sennheiser lavs, but when I popped the lid on these headsets I found three wires (gasp!). Red, Blue and Copper shield. It isn't something I am familiar with. Is it just a case of wiring to figure 11? (1 = copper, 3 = blue, 5 = red)? 




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i would give that a go.
if that doesnt work, swap the red and blue wires.

i think fig 2 could work too, but you'll need to connect one of the colour wires to pin 1

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