Hi
That link is to LTG discussion - and it works.
If you ever should get that bass - I assume you're going to find out what that "pic-up-design" has to offer.
To get a vague idea of it - just take a microphone cable w male XLR on one end and free leads on other. Connect two leads on two strings on your bass at tuners. Do not connect the ground wire. Connect the XLR into mic-input of a mixer. Play. Listen.
And remembering that this particular instrument is only a prototype - imagine what some good electronics might get out of it.
Picture of my haphazard test w my X-2000
ps - never mind that knot on A-string . . .