100 Hz seems too high to me. Have you tried 80 Hz? Might even try 70 Hz.
I had F112's and used 70 Hz with Lipinski L-707's as mains.
I think the F113's would be happier not going as high as 100 Hz and the Salon2's have no problem going well below 80 Hz.
You have to remember, low E on bass guitar is 41 Hz, low E on guitar is 82 Hz. D below it is 73 Hz.
I consider 80 Hz the upper range of bass. By the time you hit 110 Hz you're at the A string on guitar. That's low midrange IMO.
If you look at the specs of the F113 (
http://www.jlaudio.com/f113-gloss-ho...bwoofers-96137), it's flattest (+/- 1.5dB) from 20-86Hz.
It's down 3 dB at 127Hz, that's just it's natural rolloff.