Anything with a bass sweep would work though. While you're doing the crawl listen to the full sweep in each location, it should sound (or even better, measure) equally loud through out. If using the DVD, you can even get an idea what frequencies are being accentuated or lacking. Sort of a poor-man's REW.
I've done this before, with my surrounds actually, and it works quite well.
It really gives you an idea of what your ears can and cannot really hear.
In manual measurements there was a low valley in a narrow range in our original listening room, but during the sweep, because the frequencies move along at a relatively fast pace, you cannot pick it out.
One Hz out of so many, or a small range and depending on the dB down may not make an audible difference in music/movie playback with everything else that is going on sonically.
