That's an interesting thread. I don't know if Lightwave-systems are still alive though.
Anyway, I have a complete Lightwave system that I plan to mount on a six fretless. It's basically made of six independant bridges, each one hosting both an IR cell and a brass bridge on a piezo.
The IR stuff is just meant to bring harmonics to the piezo signal. You can't use the IR signal "as is" - instead it is mixed to the piezo signal.
Also the sound you get from this system is amazing, it's a real pain to setup.
And the bridges are ugly, so reproducing (I don't mean copying the original design, wich is patended, but finding another way to attend the same result) the electronics to include them in more stylish container is a good idea.
