This is something born in the bath tub yesterday night.
An array of tuning forks is geometricaly unsolvable. The fork's
distances will always come up dissonant when the array grows to more
than three forks in unilateral arrangement. But, there may be solution
in shielding in particular dirrections. Therefore, a big array might be
built with dissonance removed.
The same thing could be done with directionally shielded antenae array.
It woud be interesting to see if the tuned feed back could spontaneously
amplify.
Again, I am not into electronics, so I cannot do this. But it might be
worth a shot.
It might be advisable to use remote controll for the initial input and
keep one's distance. In case of a success, it might be difficult to stop
it.
Regards Slavek.