Hi everybody,
I am in the process of breaking in my DIY 3 way system and have reached a point where I need some help.

If I interpret JBL polarity conventions correctly, I think that all three drivers are considered to be negative, the 2231A, 2420/2312/2308 and the 2405H.

Okay, so assuming this is right, if I interpret the 3133 network schematic correctly, it appears that the 2420 is wired with the same polarity as the 2231A, despite the fact that there is a second order filter (i.e. 270 degree shift) in there. Maybe because of horn length?

The 2405H looks like it's polarity is wired in opposite to the other two drivers.

Have I got this right? I have tried listening to various polarity combinations and I think I have got it right.
Charles.