I recently moved my subwoofer so that it is placed next to the couch, around 5 feet from the main listening position. I did this because it made the front look better (less clutter) and because Dr. Hsu recommended this given my room set-up.

After recalibrating, etc., I've noticed that I can now localize the sub sounds. My crossover is set at 80. In addition, even the lowest "noteless rumbles" can sometimes be localized.

I always thought that sounds lower then 120 Hz or so were not localize-able. Untrue? Any suggestions/discussion about why this is happening or ways to fix it?