New Heathkit AS101 owner - First post.

[Earl K]

I'm confused. Plans on the net show the Model 19 lower cab to be 30x24x19. If I plug those OD dimensions into this volume calculator, and assuming 3/4" panels you get 6.49" of internal volume.

Speaker Box Volume Calculator / Designer

What am I doing wrong?

Here's a clue ;

This is a look at the bottom of an M19 horn module .