Hi Rob,
All three of your transducers are the same polarity. You applied positive voltage to the male terminal which is the "black" terminal so cone will move out. You applied positive voltage to the red terminal on the 2105 so the cone will move in. All the transducers in the photo are "traditional" JBL polarity. Apply positive voltage to the RED push button terminal or female terminal and the cone will move in.
I don't know about David's recent LE5-12 recone because I just reconed two LE5-12's and they are the same old "traditional" JBL polarity.
The LE5-6, LE5-8, LE5-10 and LE5-12 take the C8RLE510 kit and the 2105H, LE5H, LE5-3, LE5-5, LE5-9, and LE5-11 take the C8RLE59 kit. The polarity doesn't change between drivers.
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