Aha! I too have a 100Hz peak from my speakers. My attempts to shift the speakers around had no real effect on this peak. Each speaker was producing a different response in this area but the effects were additive. I finally managed to improve things just a little by equ-ing the subwoofer after making it "hotter" and increasing the slope of the housecurve.
May I add a few of my bloopers to your thread as a warning to others?
I should have worn ear defenders or ear plugs yesterday. I woke up this morning with a really fierce whistle in my left ear! I sit about 1 foot from the left speaker at my computer. First time I've ever bothered sweeping the speakers seriously. I usually concentrate on my subs. I must have done at least 50 fullrange sweeps above 80dB while sitting right next to my speaker. Never though about ear damage at the time. Daft really, because I usually wear my radio ear defenders without hesitation when there are high noise levels.
My latest BFD filter set must be reducing sub output by around 20dB. I did a sweep after running over to adjust a filter and had mistakenly left the BFD on another filter set. The resulting sweep nearly blew the IB into the garden! Woops!
I also did a loud sweep after quickly checking the results of my filtering efforts with organ music. Then forgot to turn the volume down to REW calibration level afterwards!
Not really a bad day for me! My wife calls me Mr Pastry after such events. (An old slapstick comic)
