Originally Posted by steve71
Re-guarding your null... I've been studying up on acoustics and this could explain your issue. This is just a cut and past of someone else's text from my notes - sorry I can't give credit to the original poster....
That's some good info, BUT, does it explain how me moving strictly on the vertical axis eliminates the null? If I simply stand up, the null is gone. My distance to the speakers is still the same, and obviously so is the distance of the sub to the walls. I just simply raised my head about 3ft.
It's also not a phasing issue between speakers. The null is there with the mains and both subs playing, as well as just a single sub with nothing else turned on. All in all I've had over 10 different subwoofers in this room over the years, same null with all of them.
Again, I'm not too concerned because this room is only temporary. I'm sure the new room will have new problems of its own