Having looked closely at the design of my 'Realistic' PZM I was wondering if anyone had tried mounting a small diaphram mic very close to a large flat surface or plate to obtain the same effect. Why? Firstly you could swap different mics, and secondly all the sig/noise benefits. I imagine setting the distance from the plate might need some fine adjustment. I think I might experiment and mount a mic holder onto a flat steel plate. No doubt, someone has tried this before or similar. Any thouhts? Dave.