Thanks GM, appreciated.

Was on the tools today, developing a MDF horn section.

Throat is 20cm x 20cm (7.87 inch x 2) = 61.93 inches square.

Mouth is 76cm x 76cm (30.71 x 2) = 943 inches sq

Axial length is 40cm (15.75 inches).

Cabinet volume approx 250 liters, if I use my existing box...to be decided....as I'd have to cut it apart.

Flare is "line of best fit" based on 31 inch radius.

See attached.