Thank You very much. That is one of 2 posts (from all of this 17 pages) that giving us something real.Finally got around to some tests today and the network that was supposed to tame the 5k peak does not seem to be doing much. Resistors were both set at the same value as the network by Steve Deckert/Decware described earlier in the thread. The plots shown here are of the right speaker with and without network and the third is of the left speaker with the network. I guess I was wrong to assume the resistance value he defined would be approximately right for my needs, although I think it should be the same value whether you're using a flea watt tube amp or a modest solid state amp like my F5. Right? I didn't drag the speakers outside to test but the mic is very close to the driver and on axis (see pic)
cheers!