Four panels, two of which will be inverse.
First picture:


Each panel is 20" x 40". Their target is 715Hz, with a cutoff at 6,615Hz.
They use 17 wells, and the period length is 493mm. (minus 3mm, because I will use the QRD frame for the end fin.)
They use 17 wells, and the period length is 493mm. (minus 3mm, because I will use the QRD frame for the end fin.)



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