Thank you for your advice.
We already considered the idea about about making a squere shape voice equipment.
However, my friend said to me "It`s very easy to make the squre one technically compared to icolizer, but I have a technichque to make moving icolizer version , so please give me a chance"
The dots look like mounted far apart but If you see some other my videos, maybe you will notice that 1/8 scale will cover the distance of each dot and maybe make them concentrated to its center.
No one will care the distance the balance of the dots with naked eyes I hope.