Scott. you seem to lack the understanding of basic concepts of crossovers as they relate to inductors. I am sure Bruce can give you some good info. I have a 5-way edgar horn system, btw. removing the coil is going to basically remove the low-pass on the woofer. The reason it sounds clearer is the woofer is running full range most likely. inductors affect a lot more than impedance, they affect frequency response. go model the crossover using existing values, in an online crossover program and see what the points and slopes are. Swapping taps on the output of the amp is going to fool with the sound even more. you are better off leaving it at 8 ohm tap most likely. Anything different is going to reflect a different impedance to the output tube through the OPT. Frankly, this sort of discussion is better off at H.E. asylum where there are far more skilled people to reply (than here) incl. Bruce Edgar himself. Basically, leave the Xover alone, you stand to do (more) damage to the sound and the gear by fooling with it and not knowing what you are doing . BTW, lose the Fane. it sounds bad in comparison to the better Fostex like T925A and T900A. Bruce himself is going with Fostex in his stuff now, generally (for those that want the best sonics). Fane is efficient but that's all it is. It's harsh and grating compared to Fostex, I have owned all 3 + EV, ST-350, etc.
-Ed
-Ed