Wayne Parham Messages: 18789 Registered: January 2001
Illuminati (33rd Degree)
The way we build them is to make the motor chamber first and then mount the completed assembly to the cabinet sides. The drawings were done with that in mind, and I don't think additional measurements are required. However, I can ask the draftsman to add those dimensions if you think it would be helpful.
You'll notice that in both of those, the sides of the motor chambers are formed by the sides of the horn cabinet. One of the early production model changes was to build the motor chamber complete with side pieces and attach the completed assembly to the horn cabinet. It comes together better that way and makes alignment of everything easier.