My reason for using 2226 up to 1.6khz
I use less than 100 wpc(usually less then 10 wpc SE tube). and by using a single coil (2226J = 1.4 mh - 2226H = .7 mh) per Pi speaker Wayne Parham, I get pretty decent results and allows me to use 1" compression drivers that run easier starting at 1.6 khz.
My SE (single-ended) tube amps work well in a small room like I have(12' x 16').
Maybe because I sit off axis is the reason the beaming does not offend me as much.
Also my 650 hz round tractix Edgarhorns tend to beam also and sitting close, but off axis sounds pleasant to me.
If running higher power amps, go with JBL's recommendation of 80 hz - 800 hz for the 2226.
I was searching for different size cabinets used for 2226 when I resurrected this thread!
Ron