Quote Originally Posted by Simon Barden View Post
With a 3mm thick plate of either brass or titanium in that relatively small size of cavity, I doubt you'd get much resonance from either, especially if firmly screwed against the wood which will damp it. But it will be a nice firm fixing for the pups.
Probably quite true, the exercise was more about eliminating clutter on the face. It's getting a three way switch and a single volume knob. The buried jack was part of that drive.