I didn't read the rest of this thread, but I'll tell my story. Apply it to your situation as needed...
So, my cousin, Scott Petersen (not the one who may or may not have killed his wife) was over using my system to do video editing for an independent film he was making. We had a pair of Infinity Kappa 200 bookshelf speakers and my SVS PB12Plus/2 hooked up. There was a ton of low frequency noise in his footage as he had used a mic taped up to a bamboo poll for his boom. Most of the noise was right around 20hz or lower, and as he started to work on the editing, I could feel the room pressurize as I am used to what my sub sounds and feels like. He couldn't hear it and didn't notice. I showed him how to use the filter function to remove all the sound below about 60hz since there wasn't anything useful down there in his footage anyway, and off I went to bed. He literally spent 8 hours working on the film withOUT using the filter and finally went to bed at like 5am feeling pretty sick, I guess. I was awake around 8 or 9am and he got up too as the bathroom was calling. He was in there for about 3 hours the rest of the morning. He said he's never had bowel trouble that bad before. We are pretty sure we just invented the 8 hour sonic enema. *laugh* I am glad it wasn't me!! In any case, I am pretty sure that it was the sub's fault, and not food or other illness. No one else was sick, and he was the only one who was exposed to that much bass. The others in the household were 2 floors away sleeping. In any case, I believe that too much low bass can be very detrimental.
If you want to find out for yourself, just get a big sub that goes down to 16hz, play a 16hz test tone around 90 to 100db (which you can't hear, of course), and see how long it takes for you to get nauseous... It'll be less than an hour, I bet.
Later all you bass freaks!
