Just some blue sky thinking.
I plan on using 511b's with a model 19 crossover. I estimate that I have 6" of additional delay on the horn compared to the 811b's. I'm under the impression that Altec used such a long throat to keep dispersion to a minimum and focus most of what HF they could produce on axis.
If I'm now using BMS drivers could I now shorten the horn and thereby improve _my_ time alignment and dispersion?
Jorg